CN105541161A - Application of ultra-high early strength polycarboxylic acid water reducer to preparation of precast concrete component - Google Patents

Application of ultra-high early strength polycarboxylic acid water reducer to preparation of precast concrete component Download PDF

Info

Publication number
CN105541161A
CN105541161A CN201510934700.2A CN201510934700A CN105541161A CN 105541161 A CN105541161 A CN 105541161A CN 201510934700 A CN201510934700 A CN 201510934700A CN 105541161 A CN105541161 A CN 105541161A
Authority
CN
China
Prior art keywords
water reducer
methoxyl group
early strength
concrete
high early
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510934700.2A
Other languages
Chinese (zh)
Other versions
CN105541161B (en
Inventor
张小富
赵利华
白淑英
李论
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGDONG REDWALL NEW MATERIALS CO Ltd
Original Assignee
GUANGDONG REDWALL NEW MATERIALS CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GUANGDONG REDWALL NEW MATERIALS CO Ltd filed Critical GUANGDONG REDWALL NEW MATERIALS CO Ltd
Priority to CN201510934700.2A priority Critical patent/CN105541161B/en
Publication of CN105541161A publication Critical patent/CN105541161A/en
Application granted granted Critical
Publication of CN105541161B publication Critical patent/CN105541161B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
    • C08G65/2603—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
    • C08G65/2606—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
    • C08G65/2609—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aliphatic hydroxyl groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/32—Polymers modified by chemical after-treatment
    • C08G65/329—Polymers modified by chemical after-treatment with organic compounds
    • C08G65/331—Polymers modified by chemical after-treatment with organic compounds containing oxygen
    • C08G65/332—Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides, or esters thereof
    • C08G65/3322—Polymers modified by chemical after-treatment with organic compounds containing oxygen containing carboxyl groups, or halides, or esters thereof acyclic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/32—Polymers modified by chemical after-treatment
    • C08G65/329—Polymers modified by chemical after-treatment with organic compounds
    • C08G65/333—Polymers modified by chemical after-treatment with organic compounds containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/302—Water reducers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a preparation method of a precast concrete component. The method comprises the following steps: natural curing is carried out for a precast component preliminary body which is formed after concrete pouring, demoulding is carried out when the precast component preliminary body reaches demoulding strength, natural curing is continuously carried out, and the precast concrete component is obtained. The concrete comprises following components: cement, aggregates, an ultra-high early strength polycarboxylic acid water reducer and water; the super early strength polycarboxylic acid water reducer is a compound shown in the formula (I) or the formula (II). The invention also discloses a precast concrete component which is prepared by the preparation method of the precast concrete component. The ultra-high early strength polycarboxylic acid water reducer is used for promoting cement hydration, any activity enhancing admixtures are not added, a concrete mix ratio is optimized, and finally die stripping time of the precast concrete component is shortened from 30-40 hours to 12-15 hours; turnover period of the die is accelerated, and economic benefit is improved.

Description

The purposes in concrete prefabricated element prepared by ultra high early strength poly-carboxylic water reducer
Technical field
The present invention relates to a kind of purposes of ultra high early strength poly-carboxylic water reducer, be specifically related to a kind of ultra high early strength poly-carboxylic water reducer and preparing the purposes in concrete prefabricated element.
Background technology
Precast concrete is one of topmost structure formation of modern architecture, has the advantage such as quality product of saving material and labor force, raising high construction efficiency, accelerating construction progress, raising construction work.From environmental protection and energy-conservation angle, application precast concrete technology can reduce environmental pollution, and obtain larger economic benefit, precast concrete has larger development prospect in China.
The prefabricated components (beam, plate, post etc.) of factorial praluction are carried out a kind of rapid construction technology of aggregate erection by the method for construction of precast concrete exactly with construction machineries such as lifting machines.Its construction is divided into two stages: the first stage at produce in factory prefabricated components, subordinate phase in-site installation.
Concrete prefabricated element be with concrete be basic material in advance at the building slab that factory makes, comprise beam, plate, post and construction and decoration accessory etc., for working-yard assembling, be the basic substance of building industrialization.Due to stdn and the regularization of component, prefabricated components are than saving more material with the equivalent link that other constructional method is produced with artificial, and product dispatches from the factory by written standards close inspection, and quality guarantee rate is high.
The feature of prefabricated components:
1, structure properties is good, and adopt batch production to make and effectively can ensure theory of structures, discreteness is little.
2, speed of application is fast, good product quality, and surface smoothness is high, can reach the decorative effect of clear-water concrete, and structure is coordinated with building unification.
3, factorial praluction is energy-conservation, is conducive to environmental protection, reduces the noise of site operation.
4, fire resistance is good.
Generally common are precast concrete floor plate, bridge concrete box girder, industrial premises precast concrete roof truss beam, culvert frame structure, basement process precast concrete pile etc.
Concrete structure divides cast-in-place and prefabricated two kinds, and beam, plate, pipe, stake etc. all have prefabricated and cast-in-place form of construction work.Prefabricated component can batch production lot production, is beneficial to construction, accelerates progress.
Concrete precast element will accomplish that outward appearance is beautiful, and first controls mix proportion, and sand coarse aggregate ratio can not be less than 40%; Second gets little water cement ratio as far as possible, because coagulation water in soil is fewer, the chance producing bubble is fewer; 3rd uses Early-strength polycarboxylate superplasticizer, and to improve the turn around time of concrete strength and shortening mould, the 4th is the problem of vibrating, and can not owe to shake but can not cross and shake, this will be observed by rule of thumb.
The adaptability of polycarboxylic acid series additive and gelling material is good, and bleeding rate is low, and function of slump protection is excellent, component shiny appearance, densification, bubble are few, chloride ion content and alkali content low, be highly suitable for the high performance high strength concrete preparing good endurance.Use the concrete that common high-performance polycarboxylic acids water reducing agent is prepared, time of coagulation is long, and hydrated cementitious is slow, and gain in strength is slow, causes mould turn around time long.
Summary of the invention
The object of the invention is to overcome weak point that prior art exists and provide a kind of preparation method of concrete prefabricated element, ultra high early strength poly-carboxylic water reducer described in the application of the invention in the method for the invention, facilitate hydrated cementitious, do not add any increased activity adulterant, and optimised coagulation soil proportioning, finally makes the striking time of prefabricated components by common 30-40h, shortens to 12-15h, accelerate mould turn around time, improve economic benefit.
For achieving the above object, the technical scheme taked: a kind of preparation method of concrete prefabricated element, said method comprising the steps of: the demoulding after the prefabricated components just body natural curing to demoulding strength of formation after concrete placement is completed, continue natural curing afterwards, namely obtain described concrete prefabricated element;
Described concrete comprises following component: cement, gather materials, ultra high early strength poly-carboxylic water reducer and water, described ultra high early strength poly-carboxylic water reducer is the compound shown in formula I or (II);
The structural formula of the compound shown in described formula I is as follows:
The structural formula of the compound shown in described formula II is as follows:
Wherein a is the integer of 1 ~ 80, and b is the integer of 1 ~ 80, and c is the integer of 1 ~ 50; L is the integer of 1 ~ 50;
A is r is H or CH3;
B is
C is
N is r 2, R 3and R 4be alone C respectively 1-3alkyl; X -be Cl -, Br -or I -; M is the integer of 5 ~ 200, and n is the integer of 0 ~ 50, and z is the integer of 1 ~ 150.Preferably, described m is the integer of 10 ~ 180, and described n is the integer of 0 ~ 40, and described z is the integer of 1 ~ 100.More preferably, described m is the integer of 12 ~ 100, and described n is the integer of 0 ~ 30, and described z is the integer of 1 ~ 80.
Preferably, the ultra high early strength poly-carboxylic water reducer shown in described formula I is prepared from by following methods:
(1a) synthesis of methoxyl group hydroxyl PEG intermediate
In reactor, add methyl alcohol, the one in the mixture of oxyethane and oxyethane and propylene oxide, 1-halo-2,3-propylene oxide and catalyzer, stir, react 2-10h at 80 ~ 150 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate; Its reaction formula is as follows:
Wherein, 1-halo-2,3-propylene oxide is epoxy chloropropane, epoxy bromopropane or Epiiodohydrin;
(2a) synthesis of methoxyl group PEG surface-active macromonomer
In reactor, add the methoxyl group hydroxyl PEG intermediate of synthesis in step (1a), polymerisable carboxylic acid, catalyzer and stopper, stir, react 3-15h at 70-170 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer; Its reaction formula is as follows:
Wherein, polymerisable carboxylic acid is vinylformic acid, methacrylic acid, maleic anhydride or methylene-succinic acid;
(3a) synthesis of cation quaternary ammonium salt PEG surface-active macromonomer
Quaternization reactant and stopper is added in reactor, be warming up to 10-80 DEG C, the quaternization reactant solution of the methoxyl group PEG surface-active macromonomer of synthesis in slow dropping step (2a), after dropwising, under 10-80 DEG C of condition, continue insulation reaction 1-10h, obtain cation quaternary ammonium salt PEG surface-active macromonomer; Its reaction formula is as follows:
Wherein, described quarternary ammonium salt compound is N (R 2r 3r 4), wherein R 2, R 3and R 4be alone C respectively 1 ?3alkyl.
(4a) synthesis of the ultra high early strength poly-carboxylic water reducer shown in formula I
In reactor, add deionized water, cation quaternary ammonium salt PEG surface-active macromonomer, polymerisable carboxylic acid and Soxylat A 25-7 polymeric monomer that molecular weight regulator, step (3a) are synthesized, be warming up to 85-95 DEG C, drip the aqueous solution of initiator,, time for adding is 1 ~ 10h, dropwises rear insulation, soaking time is 1 ~ 12h, thereafter, at being cooled to 50-45 DEG C, adjustment pH is 7.0-8.0, obtains ultra high early strength poly-carboxylic water reducer;
Wherein, described polymerisable carboxylic acid is methacrylic acid, vinylformic acid, methylene-succinic acid or maleic anhydride; Described Soxylat A 25-7 polymeric monomer is APEG, HPEG, VPEG or TPEG.
Preferably, methyl alcohol in described step (1a), one in the mixture of oxyethane and oxyethane and propylene oxide and 1-halo-2, the mol ratio of 3-propylene oxide is methyl alcohol: the one in the mixture of oxyethane and oxyethane and propylene oxide: 1-halo-2,3-propylene oxide=1:5 ~ 250:1 ~ 150; In described step (2a), the mol ratio of methoxyl group hydroxyl PEG intermediate and olefin(e) acid is methoxyl group hydroxyl PEG intermediate: olefin(e) acid=1:1 ~ 1:8; The mol ratio of quaternization reactant described in described step (3a) and described methoxyl group PEG surface-active macromonomer is quaternization reactant: methoxyl group PEG surface-active macromonomer=0.2:1 ~ 2:1; The mol ratio of described step (4a) cationic quaternary ammonium salt PEG surface-active macromonomer, polymerisable carboxylic acid and Soxylat A 25-7 polymeric monomer is cation quaternary ammonium salt PEG surface-active macromonomer: polymerisable carboxylic acid: Soxylat A 25-7 polymeric monomer=1.0 ~ 3.0:1 ~ 6.0:1.
Preferably, the catalyzer in described step (1a) is sodium hydride or sodium; Catalyzer in described step (2a) is at least one in methylsulfonic acid and p-methyl benzenesulfonic acid; Stopper in described step (2a), (3a) is Resorcinol or to methyl ether phenol, in described step (2a), the consumption of stopper is 0.02% ~ 0.08% of described methoxyl group hydroxyl PEG intermediate mole number, and in described step (3a), the consumption of stopper is 0.02% ~ 0.08% of described methoxyl group PEG surface-active macromonomer mole number.Described step (4a) middle-molecular-weihydroxyethyl conditioning agent is at least one in sulfhydryl compound and Virahol, and the consumption of described step (4a) middle-molecular-weihydroxyethyl conditioning agent is 0.005 ~ 5% of the total mole number of described step (4a) cationic quaternary ammonium salt PEG surface-active macromonomer, polymerisable carboxylic acid and Soxylat A 25-7 polymeric monomer; In described step (4a), the mass concentration of sodium hydroxide solution is 30%; In described step (4a), initiator is the one in Potassium Persulphate, ammonium persulphate, hydrogen peroxide and benzoyl peroxide, and in described step (4a), the consumption of initiator is 0.05 ~ 5% of the total mole number of described step (4a) cationic quaternary ammonium salt PEG surface-active macromonomer, polymerisable carboxylic acid and Soxylat A 25-7 polymeric monomer.Preferably, described step (4a) middle-molecular-weihydroxyethyl conditioning agent is at least one in 3-thiohydracrylic acid, Thiovanic acid, mercaptoethanol, rongalite and Virahol.
Preferably, the ultra high early strength poly-carboxylic water reducer shown in described formula II is prepared from by following methods:
(1b) synthesis of methoxyl group hydroxyl PEG intermediate
In reactor, add methyl alcohol, the one in the mixture of oxyethane and oxyethane and propylene oxide, 1-halo-2,3-propylene oxide and catalyzer, stir, react 2-10h at 80-150 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate; Its reaction formula is as follows:
Wherein, 1-halo-2,3-propylene oxide is epoxy chloropropane, epoxy bromopropane or Epiiodohydrin;
(2b) synthesis of methoxyl group PEG surface-active macromonomer
In reactor, add the methoxyl group hydroxyl PEG intermediate of synthesis in step (1b), polymerisable carboxylic acid, catalyzer and stopper, stir, react 3-15h at 70-170 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer; Its reaction formula is as follows:
Wherein, polymerisable carboxylic acid is vinylformic acid, methacrylic acid, maleic anhydride or methylene-succinic acid;
(3b) synthesis of cation quaternary ammonium salt PEG surface-active macromonomer
Quaternization reactant and stopper is added in reactor, be warming up to 10-80 DEG C, the quaternization reactant solution of the methoxyl group PEG surface-active macromonomer of synthesis in slow dropping step (2b), after dropwising, under 10-80 DEG C of condition, continue insulation reaction 1-10h, obtain cation quaternary ammonium salt PEG surface-active macromonomer; Its reaction formula is as follows;
Wherein, described quarternary ammonium salt compound is N (R 2r 3r 4), wherein R 2, R 3and R 4be alone C respectively 1 ?3alkyl.
(4b) synthesis of the ultra high early strength poly-carboxylic water reducer shown in formula II
Deionized water is added in reactor, molecular weight regulator, the cation quaternary ammonium salt PEG surface-active macromonomer that step (3b) is synthesized, polymerisable carboxylic acid, Soxylat A 25-7 polymeric monomer, acrylamide, 2 ?Bing Xi Xian An ?2 ?one in methyl propane sulfonic acid and sodium allyl sulfonate, be warming up to 85 ?95 DEG C, drip the aqueous solution of initiator, time for adding is 1 ~ 10h, dropwises rear insulation, soaking time is 1 ~ 12h, thereafter be cooled to 50 ?at 45 DEG C, regulate pH be 7.0 ?8.0, obtain ultra high early strength poly-carboxylic water reducer;
Wherein, described polymerisable carboxylic acid is methacrylic acid, vinylformic acid, methylene-succinic acid or maleic anhydride; Described Soxylat A 25-7 polymeric monomer is APEG, HPEG, VPEG or TPEG.
Preferably, methyl alcohol in described step (1b), one in the mixture of oxyethane and oxyethane and propylene oxide, 1-halo-2, the mol ratio of 3-propylene oxide is methyl alcohol: the one in the mixture of oxyethane and oxyethane and propylene oxide: 1-halo-2,3-propylene oxide=1:5 ~ 250:1 ~ 150; In described step (2b), the mol ratio of methoxyl group hydroxyl PEG intermediate and olefin(e) acid is methoxyl group hydroxyl PEG intermediate: olefin(e) acid=1:1 ~ 1:8; The mol ratio of quaternization reactant described in described step (3b) and described methoxyl group PEG surface-active macromonomer is quaternization reactant and methoxyl group PEG surface-active macromonomer=0.2:1 ~ 2:1; A kind of mol ratio in described step (4b) cationic quaternary ammonium salt PEG surface-active macromonomer, polymerisable carboxylic acid, Soxylat A 25-7 polymeric monomer and acrylamide, 2-acrylamide-2-methyl propane sulfonic and sodium allyl sulfonate is cation quaternary ammonium salt PEG surface-active macromonomer: polymerisable carboxylic acid: Soxylat A 25-7 polymeric monomer: one=1.0 ~ 3.0:1 ~ 6.0:1:0.2 ~ 6.0 in acrylamide, 2-acrylamide-2-methyl propane sulfonic and sodium allyl sulfonate.
Preferably, the catalyzer in described step (1b) is sodium hydride or sodium; Catalyzer in described step (2b) is at least one in methylsulfonic acid and p-methyl benzenesulfonic acid; Stopper in described step (2b), (3b) is Resorcinol or to methyl ether phenol, in described step (2b), the consumption of stopper is 0.02% ~ 0.08% of described methoxyl group hydroxyl PEG intermediate mole number, and in described step (3b), the consumption of stopper is 0.02% ~ 0.08% of described methoxyl group PEG surface-active macromonomer mole number.Described step (4b) middle-molecular-weihydroxyethyl conditioning agent is at least one in sulfhydryl compound and Virahol, and the consumption of described step (4b) middle-molecular-weihydroxyethyl conditioning agent is 0.005 ~ 5% of a kind of total mole number in described step (4b) cationic quaternary ammonium salt PEG surface-active macromonomer, polymerisable carboxylic acid, Soxylat A 25-7 polymeric monomer and acrylamide, 2-acrylamide-2-methyl propane sulfonic and sodium allyl sulfonate; In described step (4b), initiator is the one in Potassium Persulphate, ammonium persulphate, hydrogen peroxide and benzoyl peroxide, and in described step (4b), the consumption of initiator is 0.05 ~ 5% of a kind of total mole number in described step (4b) cationic quaternary ammonium salt PEG surface-active macromonomer, polymerisable carboxylic acid, Soxylat A 25-7 polymeric monomer and acrylamide, 2-acrylamide-2-methyl propane sulfonic and sodium allyl sulfonate.Preferably, described step (4a) middle-molecular-weihydroxyethyl conditioning agent is at least one in 3-thiohydracrylic acid, Thiovanic acid, mercaptoethanol, rongalite and Virahol.
Preferably, described demoulding strength is more than or equal to 30MPa.
Preferably, the just body natural curing of described prefabricated components is 12 ~ 15h to the time of demoulding strength.
Preferably, described concrete also comprises flyash.
Preferably, the weight of described ultra high early strength poly-carboxylic water reducer is 1.1% ~ 1.6% of described cement weight.
Preferably, described concrete comprises the component of following weight part: cement 375 ~ 405 parts, gathers materials 1740 ~ 1775 parts, ultra high early strength poly-carboxylic water reducer 5 ~ 8 parts and 135 ~ 145 parts, water.
Preferably, described concrete also comprises the flyash of 80 ~ 120 parts.More preferably, described concrete comprises the component of following weight part: cement 380 ~ 400 parts, gathers materials 1748 ~ 1768 parts, 90 ~ 115 parts, flyash, ultra high early strength poly-carboxylic water reducer 5 ~ 7 parts and 136 ~ 142 parts, water.More preferably, described concrete comprises the component of following weight part: cement 390 parts, gathers materials 1758 parts, 110 parts, flyash, ultra high early strength poly-carboxylic water reducer 6 parts and 138 parts, water.
Preferably, the mixture gathered materials described in for sand and stone.More preferably, the weight ratio of described sand and stone is 715:1025 ~ 1040:735.Sand of the present invention is preferably: river sand, two district's medium sands, and fineness modulus is 2.8; Stone of the present invention is preferably: 5-20 continuous grading rubble.
Cement of the present invention is preferably PII42.5R cement.
Present invention also offers a kind of concrete prefabricated element, described concrete prefabricated element adopts method described above to be prepared from.
Present invention also offers ultra high early strength poly-carboxylic water reducer and preparing the purposes in concrete prefabricated element, described ultra high early strength poly-carboxylic water reducer is the compound shown in formula I or (II);
The structural formula of the compound shown in described formula I is as follows:
The structural formula of the compound shown in described formula II is as follows:
Wherein a is the integer of 1 ~ 80, and b is the integer of 1 ~ 80, and c is the integer of 1 ~ 50; L is the integer of 1 ~ 50;
A is r is H or CH3;
B is
C is
N is r 2, R 3and R 4be alone C respectively 1-3alkyl; X -be Cl -, Br -or I -; M is the integer of 5 ~ 200, and n is the integer of 0 ~ 50, and z is the integer of 1 ~ 150.Preferably, described m is the integer of 10 ~ 180, and described n is the integer of 0 ~ 40, and described z is the integer of 1 ~ 100.More preferably, described m is the integer of 12 ~ 100, and described n is the integer of 0 ~ 30, and described z is the integer of 1 ~ 80.
Beneficial effect of the present invention is: the preparation method that the invention provides a kind of concrete prefabricated element, compared with prior art, has the following advantages:
1, use ultra high early strength poly-carboxylic water reducer of the present invention in preparation method of the present invention, accelerate hydrated cementitious, saved the energy, shorten mould life cycle;
2, use ultra high early strength poly-carboxylic water reducer of the present invention in preparation method of the present invention, concrete workability and cohesiveness improve, compact and uniform structure, and concrete anticracking, anti-permeability performance strengthen.
3, ultra high early strength poly-carboxylic water reducer of the present invention is used in preparation method of the present invention, concrete strength is stablized, square root of the variance is less than the prefabricated component square root of the variance (common polycarboxylate water-reducer technique square root of the variance: 8-15MPa, ultra high early strength poly-carboxylic water reducer square root of the variance: 4-8MPa) that ordinary process is produced;
4, for C50 prefabricated components, strength of mould stripping requires to reach more than 30MPa (comprising 30MPa), need nature watering maintenance 30-36 hour, use ultra high early strength poly-carboxylic water reducer of the present invention, only need so naturally to sprinkle water maintenance 12-15 hour, strength of mould stripping (more than 60% of design strength) can be reached.
Embodiment
For better the object, technical solutions and advantages of the present invention being described, below in conjunction with specific embodiment, the invention will be further described.
For better the object, technical solutions and advantages of the present invention being described, below in conjunction with specific embodiment, the invention will be further described.VPEG:4-hydroxy butyl vinyl ether Soxylat A 25-7 of the present invention; APEG: allyl alcohol polyethenoxy ether; HPEG: isobutene alcohol Soxylat A 25-7; TPEG: isopentenol polyoxyethylene ether.
Embodiment 1
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 12 hours, demoulding strength reaches 30MPa, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 370 parts, 715 parts, sand, 1025 parts, stone, 80 parts, flyash, ultra high early strength poly-carboxylic water reducer 5 parts and 135 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 25mol oxyethane, 5mol epoxy chloropropane and 1g sodium hydride, stir, react 10h at 80 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add step 1) middle 5mol methoxyl group hydroxyl PEG intermediate, 5mol vinylformic acid, 1g methylsulfonic acid and the Resorcinol synthesized, the consumption of described Resorcinol is 0.02% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 15h at 70 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEG surface-active macromonomer
1mol triethylamine and Resorcinol is added in glass flask, be warming up to 10 DEG C, the triethylamine solution of the polymeric monomer that slow dropping is synthesized containing 5mol step (2), the consumption of described Resorcinol is 0.02% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 10 DEG C of conditions, continue insulation reaction 10h, obtain described cation quaternary ammonium salt PEG surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 400ml deionized water, cation quaternary ammonium salt PEG surface-active macromonomer, 1mol methacrylic acid that 3-thiohydracrylic acid, 1mol step (3) are synthesized, 1molAPEG, the consumption of described 3-thiohydracrylic acid is 0.005% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and APEG; Be warming up to 85 DEG C, dripping mass percent concentration is the persulfate aqueous solution of 10%, the consumption of described Potassium Persulphate is 0.05% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and APEG, time for adding is 1h, after dropwising, and insulation reaction 1h, at being cooled to 50 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=7.0, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 2
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 15 hours, demoulding strength reaches 35MPa, the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 405 parts, 735 parts, sand, 1040 parts, stone, 120 parts, flyash, ultra high early strength poly-carboxylic water reducer 8 parts and 145 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 1000mol oxyethane, 250mol propylene oxide, 750mol epoxy bromopropane and 2.5g sodium hydride, stir, react 2h at 150 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add the 5mol methoxyl group hydroxyl PEG intermediate of synthesis in step (1), 10mol vinylformic acid, 1.5g methylsulfonic acid and Resorcinol, the consumption of described Resorcinol is 0.08% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 3h at 170 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEG surface-active macromonomer
3mol Trimethylamine 99 and Resorcinol is added in glass flask, be warming up to 80 DEG C, the trimethylamine solution of the methoxyl group PEG surface-active macromonomer that slow dropping is synthesized containing 5mol step (2), the consumption of described Resorcinol is 0.08% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 80 DEG C of conditions, continue insulation reaction 1h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 500ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 6mol methacrylic acid, 1molHPEG that Thiovanic acid, 3mol step (3) are synthesized, the consumption of described Thiovanic acid is 5% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and HPEG; Be warming up to 90 DEG C, dripping mass percent concentration is the aqueous hydrogen peroxide solution of 15%, and the consumption of described hydrogen peroxide is 5% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and HPEG; Time for adding is 10h, and after dropwising, insulation reaction 12h, at being cooled to 47 DEG C, adds the NaOH solution of 30% mass concentration, regulates pH=7.5, obtains ultra high early strength poly-carboxylic water reducer.
Embodiment 3
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 13 hours, demoulding strength reaches 33.5MPa.The demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 380 parts, 720 parts, sand, 1028 parts, stone, 90 parts, flyash, ultra high early strength poly-carboxylic water reducer 5.5 parts and 136 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 50mol oxyethane, 500mol Epiiodohydrin and 4g sodium hydride, stir, react 5h at 120 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add the 5mol methoxyl group hydroxyl PEG intermediate of synthesis in step (1), 15mol vinylformic acid, 4g methylsulfonic acid and Resorcinol, the consumption of described Resorcinol is 0.06% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 9h at 120 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEO surface-active macromonomer
10mol tripropyl amine and Resorcinol is added in glass flask, be warming up to 40 DEG C, the tripropyl amine solution of the methoxyl group PEG surface-active macromonomer that slow dropping is synthesized containing 5mol step (2), the consumption of described Resorcinol is 0.06% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 40 DEG C of conditions, continue insulation reaction 10h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 600ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 3mol methacrylic acid, 1molTPEG that mercaptoethanol, 2mol step (3) are synthesized, the consumption of described mercaptoethanol is 1% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and TPEG; Be warming up to 95 DEG C, dripping mass percent concentration is the ammonium persulfate aqueous solution of 20%, the consumption of described ammonium persulphate is 1% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and TPEG, time for adding is 5h, after dropwising, and insulation reaction 6h, at being cooled to 45 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=8.0, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 4
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 12 hours, demoulding strength arrives 33MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 400 parts, 730 parts, sand, 1038 parts, stone, 115 parts, flyash, ultra high early strength poly-carboxylic water reducer 7 parts and 142 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 900mol oxyethane, 200mol propylene oxide, 400mol epoxy chloropropane and 4g sodium hydride, stir, at 110 DEG C, react 6h, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add the 5mol methoxyl group hydroxyl PEG intermediate of synthesis in step (1), 20mol vinylformic acid, 3g p-methyl benzenesulfonic acid and Resorcinol, the consumption of described Resorcinol is 0.04% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 10h at 110 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEO surface-active macromonomer
8molN is added in glass flask, N-dimethyl amine and Resorcinol, be warming up to 50 DEG C, the N of the methoxyl group PEG surface-active macromonomer that slow dropping is synthesized containing 5mol step (2), N-dimethyl amine solution, the consumption of described Resorcinol is 0.04% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 50 DEG C of conditions, continue insulation reaction 8h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 480ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 6mol maleic anhydride, 1molVPEG that Virahol, 1mol step (3) are synthesized, the consumption of described Virahol is 2% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, maleic anhydride and VPEG; Be warming up to 90 DEG C, drip the benzoyl peroxide aqueous solution that mass percent concentration is 12%, the consumption of described benzoyl peroxide is 0.1% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, maleic anhydride and VPEG, time for adding is 7h, after dropwising, and insulation reaction 8h, at being cooled to 48 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=7.3, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 5
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 15 hours, demoulding strength arrives 35MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 390 parts, 728 parts, sand, 1030 parts, stone, 110 parts, flyash, ultra high early strength poly-carboxylic water reducer 6 parts and 138 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 60mol oxyethane, 150mol propylene oxide, 250mol epoxy bromopropane and 1g sodium, stir, react 7h at 100 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add step 1) middle 5mol methoxyl group hydroxyl PEG intermediate, 25mol vinylformic acid, 1g methylsulfonic acid and the Resorcinol synthesized, the consumption of described Resorcinol is 0.05% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 13h at 80 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEO surface-active macromonomer
7molN is added in glass flask, N-diethyl methyl amine and Resorcinol, be warming up to 60 DEG C, the N of the polymeric monomer that slow dropping is synthesized containing 5mol step (2), N-diethyl methyl amine solution, the consumption of described Resorcinol is 0.05% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 60 DEG C of conditions, continue insulation reaction 5h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 400ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 1mol methacrylic acid that 3-thiohydracrylic acid, 3mol step (3) are synthesized, 1molAPEG, 0.2mol acrylamide, the consumption of described 3-thiohydracrylic acid is 0.1% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, APEG and acrylamide; Be warming up to 85 DEG C, dripping mass percent concentration is the persulfate aqueous solution of 10%, the consumption of described Potassium Persulphate is 3% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, APEG and acrylamide, time for adding is 9h, after dropwising, and insulation reaction 10h, at being cooled to 50 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=7.0, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 6
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 14 hours, demoulding strength arrives 34MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 405 parts, 715 parts, sand, 1025 parts, stone, 80 parts, flyash, ultra high early strength poly-carboxylic water reducer 5 parts and 135 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 500mol oxyethane, 400mol Epiiodohydrin and 2.5g sodium hydride, stir, react 7h at 100 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add the 5mol methoxyl group hydroxyl PEG intermediate of synthesis in step (1), 30mol vinylformic acid, 1.5g methylsulfonic acid and Resorcinol, the consumption of described Resorcinol is 0.05% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 9h at 120 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEO surface-active macromonomer
10mol triethylamine and Resorcinol is added in glass flask, be warming up to 70 DEG C, the triethylamine solution of the methoxyl group PEG surface-active macromonomer that slow dropping is synthesized containing 5mol step (2), the consumption of described Resorcinol is 0.05% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 70 DEG C of conditions, continue insulation reaction 4h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 500ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 1mol methacrylic acid, 1molHPEG, 1mol acrylamide that rongalite, 2mol step (3) are synthesized, the consumption of described Thiovanic acid is 0.01% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, HPEG and acrylamide; Be warming up to 90 DEG C, dripping mass percent concentration is the persulfate aqueous solution of 15%, the consumption of described Potassium Persulphate is 4% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, HPEG and acrylamide, time for adding is 1h, after dropwising, and insulation reaction 12h, at being cooled to 47 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=7.5, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 7
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 12 hours, demoulding strength arrives 33MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 405 parts, 735 parts, sand, 1040 parts, stone, 120 parts, flyash, ultra high early strength poly-carboxylic water reducer 5 parts and 145 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 1000mol oxyethane, 5mol epoxy chloropropane and 4g sodium hydride, stir, react 5h at 120 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add the 5mol methoxyl group hydroxyl PEG intermediate of synthesis in step (1), 35mol vinylformic acid, 4g methylsulfonic acid and to methyl ether phenol, the described consumption to methyl ether phenol is 0.02% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 7h at 140 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEO surface-active macromonomer
5molN is added in glass flask, N-diethyl methyl amine and to methyl ether phenol, be warming up to 80 DEG C, the N of the methoxyl group PEG surface-active macromonomer that slow dropping is synthesized containing 5mol step (2), N-diethyl methyl amine solution, the described consumption to methyl ether phenol is 0.02% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 80 DEG C of conditions, continue insulation reaction 2h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 600ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 6mol methacrylic acid, 1molTPEG, 6mol acrylamide that mercaptoethanol, 3mol step (3) are synthesized, the consumption of described mercaptoethanol is 5% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, TPEG and acrylamide; Be warming up to 95 DEG C, dripping mass percent concentration is the ammonium persulfate aqueous solution of 20%, the consumption of described ammonium persulphate is 5% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, TPEG and acrylamide, time for adding is 10h, after dropwising, and insulation reaction 1h, at being cooled to 45 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=8.0, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 8
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 13 hours, demoulding strength arrives 33.5MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 375 parts, 715 parts, sand, 1025 parts, stone, 80 parts, flyash, ultra high early strength poly-carboxylic water reducer 8 parts and 135 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 1000mol oxyethane, 750mol epoxy bromopropane and 4g sodium hydride, stir, react 7h at 110 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add the 5mol methoxyl group hydroxyl PEG intermediate of synthesis in step (1), 40mol vinylformic acid, 3g p-methyl benzenesulfonic acid and to methyl ether phenol, the described consumption to methyl ether phenol is 0.08% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 10h at 110 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEO surface-active macromonomer
4mol Trimethylamine 99 is added and to methyl ether phenol in glass flask, be warming up to 80 DEG C, the trimethylamine solution of the methoxyl group PEG surface-active macromonomer that slow dropping is synthesized containing 5mol step (2), the described consumption to methyl ether phenol is 0.08% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 80 DEG C of conditions, continue insulation reaction 1h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 480ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 4mol maleic anhydride, 1molVPEG, 4mol2-acrylamide-2-methyl propane sulfonic that Virahol, 2mol step (3) are synthesized, the consumption of described Virahol be cation quaternary ammonium salt PEG surface-active macromonomer, maleic anhydride, VPEG and 2-acrylamide-2-methyl propane sulfonic total mole number 0.005%; Be warming up to 90 DEG C, drip the benzoyl peroxide aqueous solution that mass percent concentration is 12%, the consumption of described benzoyl peroxide be cation quaternary ammonium salt PEG surface-active macromonomer, maleic anhydride, VPEG and 2-acrylamide-2-methyl propane sulfonic total mole number 0.05%, time for adding is 8h, after dropwising, and insulation reaction 6h, at being cooled to 48 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=7.3, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 9
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 12 hours, demoulding strength arrives 33MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 375 parts, 735 parts, sand, 1040 parts, stone, 120 parts, flyash, ultra high early strength poly-carboxylic water reducer 8 parts and 145 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 25mol oxyethane, 250mol propylene oxide, 500mol Epiiodohydrin and 1g sodium hydride, stir, react 10h at 80 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add step 1) in 5mol methoxyl group hydroxyl PEG intermediate, 10mol vinylformic acid, the 1g methylsulfonic acid and to methyl ether phenol of synthesis, the described consumption to methyl ether phenol is 0.06% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 14h at 80 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEO surface-active macromonomer
3mol triethylamine is added and to methyl ether phenol in glass flask, be warming up to 75 DEG C, the triethylamine solution of the polymeric monomer that slow dropping is synthesized containing 5mol step (2), the described consumption to methyl ether phenol is 0.06% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 75 DEG C of conditions, continue insulation reaction 2h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 400ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 1mol methacrylic acid that 3-thiohydracrylic acid, 1mol step (3) are synthesized, 1.0molAPEG and 1mol sodium allyl sulfonate, the consumption of described 3-thiohydracrylic acid is 1% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, APEG and sodium allyl sulfonate; Be warming up to 85 DEG C, dripping mass percent concentration is the persulfate aqueous solution of 10%, the consumption of described Potassium Persulphate is 1% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, APEG and sodium allyl sulfonate, time for adding is 2h, after dropwising, and insulation reaction 2h, at being cooled to 50 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=7.0, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 10
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 12 hours, demoulding strength arrives 33MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 380 parts, 730 parts, sand, 1038 parts, stone, 115 parts, flyash, ultra high early strength poly-carboxylic water reducer 5.5 parts and 142 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 250mol oxyethane, 50mol propylene oxide, 100mol epoxy chloropropane and 2.5g sodium hydride, stir, react 8h at 90 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add the 5mol methoxyl group hydroxyl PEG intermediate of synthesis in step (1), 5mol vinylformic acid, 1.5g methylsulfonic acid and to methyl ether phenol, the described consumption to methyl ether phenol is 0.04% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 9h at 120 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEO surface-active macromonomer
6mol triethylamine is added and to methyl ether phenol in glass flask, be warming up to 80 DEG C, the triethylamine solution of the methoxyl group PEG surface-active macromonomer that slow dropping is synthesized containing 5mol step (2), the described consumption to methyl ether phenol is 0.04% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 80 DEG C of conditions, continue insulation reaction 1h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 500ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 3mol methacrylic acid, 1molHPEG and 3mol sodium allyl sulfonate that Thiovanic acid, 3mol step (3) are synthesized, the consumption of described Thiovanic acid is 2% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, HPEG and sodium allyl sulfonate; Be warming up to 90 DEG C, dripping mass percent concentration is the persulfate aqueous solution of 15%, the consumption of described Potassium Persulphate is 0.1% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, HPEG and sodium allyl sulfonate, time for adding is 4h, after dropwising, and insulation reaction 3h, at being cooled to 47 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=7.5, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 11
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 15 hours, demoulding strength arrives 35MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 400 parts, 720 parts, sand, 1028 parts, stone, 90 parts, flyash, ultra high early strength poly-carboxylic water reducer 5.5 parts and 136 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 60mol oxyethane, 150mol propylene oxide, 200mol epoxy chloropropane and 4g sodium hydride, stir, react 5h at 120 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add the 5mol methoxyl group hydroxyl PEG intermediate of synthesis in step (1), 20mol vinylformic acid, 4g methylsulfonic acid and to methyl ether phenol, the described consumption to methyl ether phenol is 0.05% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 3h at 170 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEO surface-active macromonomer
5mol triethylamine is added and to methyl ether phenol in glass flask, be warming up to 30 DEG C, the triethylamine solution of the methoxyl group PEG surface-active macromonomer that slow dropping is synthesized containing 5mol step (2), the described consumption to methyl ether phenol is 0.05% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 30 DEG C of conditions, continue insulation reaction 10h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 600ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 3mol methacrylic acid, 1molTPEG and 3mol sodium allyl sulfonate that mercaptoethanol, 1.0mol step (3) are synthesized, the consumption of described mercaptoethanol is 3% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, TPEG and sodium allyl sulfonate; Be warming up to 95 DEG C, dripping mass percent concentration is the ammonium persulfate aqueous solution of 20%, the consumption of described ammonium persulphate is 3% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid, TPEG and sodium allyl sulfonate, time for adding is 3h, after dropwising, and insulation reaction 4h, at being cooled to 45 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=8.0, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 12
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 15 hours, demoulding strength arrives 35MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 380 parts, 720 parts, sand, 1028 parts, stone, 90 parts, flyash, ultra high early strength poly-carboxylic water reducer 7 parts and 136 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 25mol oxyethane, 5mol propylene oxide, 5mol epoxy bromopropane and 4g sodium hydride, stir, react 6h at 110 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add the 5mol methoxyl group hydroxyl PEG intermediate of synthesis in step (1), 30mol vinylformic acid, 3g p-methyl benzenesulfonic acid and to methyl ether phenol, the described consumption to methyl ether phenol is 0.05% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 15h at 70 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEO surface-active macromonomer
7mol Trimethylamine 99 is added and to methyl ether phenol in glass flask, be warming up to 50 DEG C, the trimethylamine solution of the methoxyl group PEG surface-active macromonomer that slow dropping is synthesized containing 5mol step (2), the described consumption to methyl ether phenol is 0.05% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 50 DEG C of conditions, continue insulation reaction 5h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 480ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 1mol maleic anhydride, 1molVPEG and 0.2mol sodium allyl sulfonate that Virahol, 1mol step (3) are synthesized, the consumption of described Virahol is 0.01% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, maleic anhydride, VPEG and sodium allyl sulfonate; Be warming up to 90 DEG C, dripping mass percent concentration is the aqueous hydrogen peroxide solution of 12%, the consumption of described hydrogen peroxide is 4% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, maleic anhydride, VPEG and sodium allyl sulfonate, time for adding is 6h, after dropwising, and insulation reaction 6h, at being cooled to 48 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=7.3, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 13
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 15 hours, demoulding strength arrives 35MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 400 parts, 720 parts, sand, 1028 parts, stone, 90 parts, flyash, ultra high early strength poly-carboxylic water reducer 7 parts and 136 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 25mol oxyethane, 5mol epoxy chloropropane and 1g sodium hydride, stir, react 10h at 80 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add step 1) middle 5mol methoxyl group hydroxyl PEG intermediate, 5mol vinylformic acid, 1g methylsulfonic acid and the Resorcinol synthesized, the consumption of described Resorcinol is 0.02% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 15h at 70 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEG surface-active macromonomer
1mol triethylamine and Resorcinol is added in glass flask, be warming up to 10 DEG C, the triethylamine solution of the polymeric monomer that slow dropping is synthesized containing 5mol step (2), the consumption of described Resorcinol is 0.02% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 10 DEG C of conditions, continue insulation reaction 10h, obtain described cation quaternary ammonium salt PEG surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 400ml deionized water, cation quaternary ammonium salt PEG surface-active macromonomer, 1mol methacrylic acid that 3-thiohydracrylic acid, 1mol step (3) are synthesized, 1molAPEG, the consumption of described 3-thiohydracrylic acid is 0.005% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and APEG; Be warming up to 85 DEG C, dripping mass percent concentration is the persulfate aqueous solution of 10%, the consumption of described Potassium Persulphate is 0.05% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and APEG, time for adding is 1h, after dropwising, and insulation reaction 1h, at being cooled to 50 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=7.0, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 14
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 15 hours, demoulding strength arrives 35MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 390 parts, 720 parts, sand, 1028 parts, stone, 90 parts, flyash, ultra high early strength poly-carboxylic water reducer 6 parts and 136 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 1000mol oxyethane, 250mol propylene oxide, 750mol epoxy bromopropane and 2.5g sodium hydride, stir, react 2h at 150 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add the 5mol methoxyl group hydroxyl PEG intermediate of synthesis in step (1), 10mol vinylformic acid, 1.5g methylsulfonic acid and Resorcinol, the consumption of described Resorcinol is 0.08% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 3h at 170 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEG surface-active macromonomer
3mol Trimethylamine 99 and Resorcinol is added in glass flask, be warming up to 80 DEG C, the trimethylamine solution of the methoxyl group PEG surface-active macromonomer that slow dropping is synthesized containing 5mol step (2), the consumption of described Resorcinol is 0.08% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 80 DEG C of conditions, continue insulation reaction 1h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 500ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 6mol methacrylic acid, 1molHPEG that Thiovanic acid, 3mol step (3) are synthesized, the consumption of described Thiovanic acid is 5% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and HPEG; Be warming up to 90 DEG C, dripping mass percent concentration is the aqueous hydrogen peroxide solution of 15%, and the consumption of described hydrogen peroxide is 5% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and HPEG; Time for adding is 10h, and after dropwising, insulation reaction 12h, at being cooled to 47 DEG C, adds the NaOH solution of 30% mass concentration, regulates pH=7.5, obtains ultra high early strength poly-carboxylic water reducer.
Embodiment 15
A kind of embodiment of the preparation method of concrete prefabricated element of the present invention, said method comprising the steps of:
Concrete placement is obtained in a mold prefabricated components just body, by the just body natural curing of described prefabricated components after 15 hours, demoulding strength arrives 35MPa, and the demoulding, continues natural curing afterwards, obtains concrete prefabricated element.
Described concrete comprises the component of following weight part: cement 390 parts, 735 parts, sand, 1038 parts, stone, 115 parts, flyash, ultra high early strength poly-carboxylic water reducer 6 parts and 142 parts, water.
Described ultra high early strength poly-carboxylic water reducer is prepared from by following methods:
(1) synthesis of methoxyl group hydroxyl PEG intermediate
In the autoclave closed, inject 5mol methyl alcohol, 50mol oxyethane, 500mol Epiiodohydrin and 4g sodium hydride, stir, react 5h at 120 DEG C, obtain reaction product methoxyl group hydroxyl PEG intermediate;
(2) synthesis of methoxyl group PEG surface-active macromonomer
To with in 500ml tetra-mouthfuls of glass flask of agitator, thermometer, reflux condensing tube, Dropping feeder, add the 5mol methoxyl group hydroxyl PEG intermediate of synthesis in step (1), 15mol vinylformic acid, 4g methylsulfonic acid and Resorcinol, the consumption of described Resorcinol is 0.06% of described methoxyl group hydroxyl PEG intermediate mole number, pass into nitrogen, stir, react 9h at 120 DEG C, obtain reaction product methoxyl group PEG surface-active macromonomer;
(3) synthesis of cation quaternary ammonium salt PEO surface-active macromonomer
10mol tripropyl amine and Resorcinol is added in glass flask, be warming up to 40 DEG C, the tripropyl amine solution of the methoxyl group PEG surface-active macromonomer that slow dropping is synthesized containing 5mol step (2), the consumption of described Resorcinol is 0.06% of described methoxyl group PEG surface-active macromonomer mole number, after dropwising, under 40 DEG C of conditions, continue insulation reaction 10h, obtain described cation quaternary ammonium salt PEO surface-active macromonomer;
(4) synthesis of ultra high early strength poly-carboxylic water reducer
In the 1000ml four-hole boiling flask that agitator, thermometer and reflux condensing tube are housed, add 600ml deionized water, cation quaternary ammonium salt PEO surface-active macromonomer, 3mol methacrylic acid, 1molTPEG that mercaptoethanol, 2mol step (3) are synthesized, the consumption of described mercaptoethanol is 1% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and TPEG; Be warming up to 95 DEG C, dripping mass percent concentration is the ammonium persulfate aqueous solution of 20%, the consumption of described ammonium persulphate is 1% of the total mole number of cation quaternary ammonium salt PEG surface-active macromonomer, methacrylic acid and TPEG, time for adding is 5h, after dropwising, and insulation reaction 6h, at being cooled to 45 DEG C, add the NaOH solution of 30% mass concentration, regulate pH=8.0, obtain ultra high early strength poly-carboxylic water reducer.
Embodiment 16
Detect the concrete time of coagulation in embodiment 1 ~ 15, detected result is: the presetting period is 4-5h, and final setting time is 7-8h, and demould time is 12-15 hour.
Test the intensity in the age not same period of prefabricated components obtained in embodiment 1 ~ 15, test result sees the following form.
Table 1 concrete different larval instar intensity (unit: MPa)
The length of time 10-12 7d 28d
Intensity 33-35 50-53 58-65
Curing condition Nature Nature Nature
Comparative example
Use existing common polycarboxylate water-reducer to prepare prefabricated components as water reducer, concrete prefabricated components preparation method comprises: the first body of prefabricated components of formation after concrete placement being completed carries out natural curing.
Reach the demoulding after demoulding strength, continue natural curing afterwards, namely obtain described prefabricated components; Wherein, demoulding strength is 30-33MPa.
Except water reducer is common polycarboxylate water-reducer, the concrete material used in comparative example 1 ~ 15 is with the concrete material in embodiment 1 ~ 15.
Detect the concrete time of coagulation in comparative example 1 ~ 15 and demould time, detected result is: the presetting period is 10-12h, and final setting time is 15-20h, and demould time is 36 hours.
Test the intensity in the age not same period of section of jurisdiction obtained in comparative example 1 ~ 15, test result sees the following form.
Table 2 concrete different larval instar intensity (unit: MPa)
The length of time 36h 7d 28d
Intensity 30-33 40-45 55-60
Curing condition Nature Nature Nature
Known by the data results in table 1 and table 2: prefabricated components preparation method of the present invention is under employing ultra high early strength poly-carboxylic water reducer of the present invention substitutes existing common polycarboxylate water-reducer, under identical curing time, the intensity of the prefabricated components obtained is higher.Ultra high early strength poly-carboxylic water reducer concrete batching of the present invention is used in concrete prefabricated element preparation process of the present invention, adopt nature watering maintenance, due to the short cement aquation of super hardening water reducer of the present invention, concrete strength development is fast, curing time is short, mould turn around time is short, good in economic efficiency.
Finally to should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although be explained in detail the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.

Claims (10)

1. the preparation method of a concrete prefabricated element, it is characterized in that, said method comprising the steps of: the demoulding after the prefabricated components just body natural curing to demoulding strength of formation after concrete placement is completed, continue natural curing afterwards, namely obtain described concrete prefabricated element;
Described concrete comprises following component: cement, gather materials, ultra high early strength poly-carboxylic water reducer and water, described ultra high early strength poly-carboxylic water reducer is the compound shown in formula I or (II);
The structural formula of the compound shown in described formula I is as follows:
The structural formula of the compound shown in described formula II is as follows:
Wherein a is the integer of 1 ~ 80, and b is the integer of 1 ~ 80, and c is the integer of 1 ~ 50; L is the integer of 1 ~ 50;
A is r is H or CH3;
B is
C is
N is r 2, R 3and R 4be alone C respectively 1-3alkyl; X -be Cl -, Br -or I -; M is the integer of 5 ~ 200, and n is the integer of 0 ~ 50, and z is the integer of 1 ~ 150.
2. method according to claim 1, is characterized in that, described demoulding strength is more than or equal to 30MPa.
3. method according to claim 1, is characterized in that, the just body natural curing of described prefabricated components is 12 ~ 15h to the time of demoulding strength.
4. preparation method according to claim 1, is characterized in that, described concrete also comprises flyash.
5. preparation method according to claim 1, is characterized in that, the weight of described ultra high early strength poly-carboxylic water reducer is 1.1% ~ 1.6% of described cement weight.
6. preparation method according to claim 1, is characterized in that, described concrete comprises the component of following weight part: cement 375 ~ 405 parts, gathers materials 1740 ~ 1775 parts, ultra high early strength poly-carboxylic water reducer 5 ~ 8 parts and 135 ~ 145 parts, water.
7. preparation method according to claim 6, is characterized in that, described concrete also comprises the flyash of 80 ~ 120 parts.
8. preparation method according to claim 1, is characterized in that, described in the mixture that gathers materials for sand and stone.
9. one kind adopt as arbitrary in claim 1-8 as described in the concrete prefabricated element prepared of method.
10. ultra high early strength poly-carboxylic water reducer is preparing the purposes in concrete prefabricated element, it is characterized in that, described ultra high early strength poly-carboxylic water reducer is the compound shown in formula I or (II);
The structural formula of the compound shown in described formula I is as follows:
The structural formula of the compound shown in described formula II is as follows:
Wherein a is the integer of 1 ~ 80, and b is the integer of 1 ~ 80, and c is the integer of 1 ~ 50; L is the integer of 1 ~ 50;
A is r is H or CH3;
B is
C is
N is r 2, R 3and R 4be alone C respectively 1-3alkyl; X -be Cl -, Br -or I -; M is the integer of 5 ~ 200, and n is the integer of 0 ~ 50, and z is the integer of 1 ~ 150.
CN201510934700.2A 2015-12-15 2015-12-15 Purposes of the ultra high early strength poly-carboxylic water reducer in concrete prefabricated element is prepared Active CN105541161B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510934700.2A CN105541161B (en) 2015-12-15 2015-12-15 Purposes of the ultra high early strength poly-carboxylic water reducer in concrete prefabricated element is prepared

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510934700.2A CN105541161B (en) 2015-12-15 2015-12-15 Purposes of the ultra high early strength poly-carboxylic water reducer in concrete prefabricated element is prepared

Publications (2)

Publication Number Publication Date
CN105541161A true CN105541161A (en) 2016-05-04
CN105541161B CN105541161B (en) 2018-01-12

Family

ID=55820787

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510934700.2A Active CN105541161B (en) 2015-12-15 2015-12-15 Purposes of the ultra high early strength poly-carboxylic water reducer in concrete prefabricated element is prepared

Country Status (1)

Country Link
CN (1) CN105541161B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106349434A (en) * 2016-08-24 2017-01-25 安徽鑫固环保股份有限公司 Normal-temperature polycarboxylate-type ceramic water reducer and preparation method thereof
CN108264619A (en) * 2016-12-30 2018-07-10 江苏苏博特新材料股份有限公司 The preparation method of viscosity reduction type polycarboxylate water-reducer
CN109485323A (en) * 2018-12-26 2019-03-19 广东红墙新材料股份有限公司 Early strong viscosity reduction type polycarboxylate water-reducer is preparing the purposes in prefabricated components concrete
CN109749020A (en) * 2018-12-26 2019-05-14 广西红墙新材料有限公司 A kind of early strong viscosity reduction type polycarboxylate water-reducer and preparation method thereof containing alkyl
CN109762114A (en) * 2018-12-26 2019-05-17 广东红墙新材料股份有限公司 A kind of early strong viscosity reduction type polycarboxylate water-reducer and preparation method thereof containing double down viscous functional group
CN109776016A (en) * 2018-12-26 2019-05-21 广东红墙新材料股份有限公司 A kind of early strong viscosity reduction type polycarboxylate water-reducer and preparation method thereof containing three viscosity reduction functional group
CN110713358A (en) * 2019-10-30 2020-01-21 广东红墙新材料股份有限公司 Cement nano suspension concrete early strength agent and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102276213A (en) * 2010-06-12 2011-12-14 黄贺明 High-durability and high-bearing-capacity concrete segment
CN103527216A (en) * 2013-09-25 2014-01-22 暨南大学 High performance fiber concrete suitable for metro segment with large diameter and application of high performance fiber concrete
CN103951351A (en) * 2014-04-28 2014-07-30 中交武汉港湾工程设计研究院有限公司 Steam-curing-free durable concrete containing metakaolin and construction method of segments
CN104773988A (en) * 2015-04-03 2015-07-15 东南大学 Steam-curing-free early-strength steel fiber concrete pipe segment and preparation method thereof
CN105041336A (en) * 2015-07-06 2015-11-11 中国建筑股份有限公司 Ultra-high performance hybrid fiber concrete shield segment and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102276213A (en) * 2010-06-12 2011-12-14 黄贺明 High-durability and high-bearing-capacity concrete segment
CN103527216A (en) * 2013-09-25 2014-01-22 暨南大学 High performance fiber concrete suitable for metro segment with large diameter and application of high performance fiber concrete
CN103951351A (en) * 2014-04-28 2014-07-30 中交武汉港湾工程设计研究院有限公司 Steam-curing-free durable concrete containing metakaolin and construction method of segments
CN104773988A (en) * 2015-04-03 2015-07-15 东南大学 Steam-curing-free early-strength steel fiber concrete pipe segment and preparation method thereof
CN105041336A (en) * 2015-07-06 2015-11-11 中国建筑股份有限公司 Ultra-high performance hybrid fiber concrete shield segment and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李国松: "醚型聚羧酸减水剂的合成及其性能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106349434A (en) * 2016-08-24 2017-01-25 安徽鑫固环保股份有限公司 Normal-temperature polycarboxylate-type ceramic water reducer and preparation method thereof
CN108264619B (en) * 2016-12-30 2020-08-07 江苏苏博特新材料股份有限公司 Preparation method of viscosity-reducing polycarboxylic acid water reducer
CN108264619A (en) * 2016-12-30 2018-07-10 江苏苏博特新材料股份有限公司 The preparation method of viscosity reduction type polycarboxylate water-reducer
CN109485323B (en) * 2018-12-26 2021-07-23 广东红墙新材料股份有限公司 Application of early-strength viscosity-reduction type polycarboxylate superplasticizer in preparation of precast concrete
CN109762114A (en) * 2018-12-26 2019-05-17 广东红墙新材料股份有限公司 A kind of early strong viscosity reduction type polycarboxylate water-reducer and preparation method thereof containing double down viscous functional group
CN109776016A (en) * 2018-12-26 2019-05-21 广东红墙新材料股份有限公司 A kind of early strong viscosity reduction type polycarboxylate water-reducer and preparation method thereof containing three viscosity reduction functional group
CN109749020A (en) * 2018-12-26 2019-05-14 广西红墙新材料有限公司 A kind of early strong viscosity reduction type polycarboxylate water-reducer and preparation method thereof containing alkyl
CN109776016B (en) * 2018-12-26 2021-07-20 广东红墙新材料股份有限公司 Early-strength viscosity reduction type polycarboxylate superplasticizer containing three viscosity reduction functional groups and preparation method thereof
CN109485323A (en) * 2018-12-26 2019-03-19 广东红墙新材料股份有限公司 Early strong viscosity reduction type polycarboxylate water-reducer is preparing the purposes in prefabricated components concrete
CN109762114B (en) * 2018-12-26 2021-08-31 广东红墙新材料股份有限公司 Early-strength viscosity-reduction type polycarboxylate superplasticizer containing double viscosity-reduction functional groups and preparation method thereof
CN109749020B (en) * 2018-12-26 2021-11-16 广西红墙新材料有限公司 Alkyl-containing early-strength viscosity-reduction type polycarboxylate superplasticizer and preparation method thereof
CN110713358A (en) * 2019-10-30 2020-01-21 广东红墙新材料股份有限公司 Cement nano suspension concrete early strength agent and preparation method thereof
CN110713358B (en) * 2019-10-30 2022-01-07 广东红墙新材料股份有限公司 Cement nano suspension concrete early strength agent and preparation method thereof

Also Published As

Publication number Publication date
CN105541161B (en) 2018-01-12

Similar Documents

Publication Publication Date Title
CN105541161A (en) Application of ultra-high early strength polycarboxylic acid water reducer to preparation of precast concrete component
CN102910855B (en) Super plasticizer for precast concrete component
CN105645810A (en) Early-strength polycarboxylate type high-performance water reducing agent and preparation method
CN102659373B (en) High-performance corrosion-resisting concrete pile and preparation method thereof
CN105017491A (en) Early-strength polycarboxylate superplasticizer and preparation method thereof
CN102351999A (en) Method for preparing nanoparticle water reducing agent
CN104649608A (en) Additive for improving early strength of cement based material as well as preparation method and application of additive
CN108503308A (en) Slightly expanded concrete mixture
CN114057425B (en) Method for preparing polycarboxylic acid nanocrystalline core type early strength water-reducing complexing agent
CN105199060B (en) A kind of ultra high early strength poly-carboxylic water reducer and preparation method thereof
CN112250807B (en) Copolymer water reducing agent for fabricated building components and preparation method thereof
CN102910856B (en) Super plasticizer for precast concrete component
CN106116218A (en) A kind of Compositional type concrete light wall panel early strength water-reducing agent
CN105293976B (en) A kind of pile tube and preparation method thereof
CN105565719A (en) Application of super early strength polycarboxylate superplasticizer to segment
CN104944827A (en) Preparation method of slump-retaining polycarboxylic acid type water-reducer
CN105503011A (en) Application of super-earlystrength polycarboxylate superplasticizer in preparing precast concrete component
CN109485323B (en) Application of early-strength viscosity-reduction type polycarboxylate superplasticizer in preparation of precast concrete
CN105271902B (en) A kind of ultra high early strength poly-carboxylic water-reducing agent and preparation method thereof
CN105565720A (en) Application of super early strength polycarboxylate superplasticizer to segment
CN112920338B (en) Low-molecular-weight polymer for reinforced concrete and preparation method thereof
CN105294950B (en) A kind of pile tube and preparation method thereof
CN105330795B (en) A kind of ultra high early strength poly-carboxylic water-reducing agent and preparation method thereof
CN112341577A (en) Slump-retaining early-strength polycarboxylate superplasticizer and preparation method and application thereof
CN105198265A (en) Preparation method of pipe pile

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information

Inventor after: Zhang Xiaofu

Inventor after: Zhao Lihua

Inventor after: Zhong Xuan

Inventor after: Bai Shuying

Inventor after: Li Lun

Inventor before: Zhang Xiaofu

Inventor before: Zhao Lihua

Inventor before: Bai Shuying

Inventor before: Li Lun

COR Change of bibliographic data
GR01 Patent grant
GR01 Patent grant