CN110510943A - A kind of impervious corrosion resistance of chloride ion concrete and preparation method thereof - Google Patents
A kind of impervious corrosion resistance of chloride ion concrete and preparation method thereof Download PDFInfo
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- CN110510943A CN110510943A CN201910725083.3A CN201910725083A CN110510943A CN 110510943 A CN110510943 A CN 110510943A CN 201910725083 A CN201910725083 A CN 201910725083A CN 110510943 A CN110510943 A CN 110510943A
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- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/023—Fired or melted materials
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- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
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- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
- C04B20/06—Expanding clay, perlite, vermiculite or like granular materials
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
- C04B20/1037—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a kind of impervious corrosion resistance of chloride ion concrete and preparation method thereof.Impervious corrosion resistance of chloride ion concrete comprises the following components in parts by weight: 350-450 parts of cement, 670-710 parts of fine aggregates, 950-1200 parts of coarse aggregates, 168-198 parts of water, 55-70 parts of flyash, 35-55 parts of silicon powders, 8.5-11.5 parts of water-reducing agents, 0.04-0.08 parts of air entraining agents, 35-65 parts of modified alta-muds, 40-60 parts of kaolin, 30-50 parts of ground slags, 20-30 parts of modified rubber particles, 20-45 parts of water-absorbing resins.Impervious corrosion resistance of chloride ion concrete of the invention have prevent Chloride Attack, the good advantage of cracking resistance, anti-permeability performance.
Description
Technical field
The present invention relates to building material technical fields, more specifically, it relates to a kind of impervious corrosion resistance of chloride ion coagulation
Soil and preparation method thereof.
Background technique
Concrete is one of the present age most important civil engineering material, it is by cementitious material, and granular aggregat is (also referred to as
Aggregate), after water and the additive being added when necessary and admixture prepare by a certain percentage, through uniform stirring, closely knit molding, support
A kind of artificial stone material made of shield hardening.Concrete have abundant raw material, cheap, simple production process, compression strength it is high,
The features such as durability is good, strength grade range is wide, has been widely used in various civil engineerings.
In the prior art, application No. is the Chinese invention patent files of CN201110074370.6 to disclose a kind of nanometer of material
Expect compound ultra-high performance concrete preparation technique, 1m3Contain cement 380-420kg, fine aggregate 680-740kg in concrete, slightly
Aggregate 1120-1190kg, water 130-160kg, flyash 50-75kg, silicon ash 25-64kg, high-performance water reducing agent 6.1-10.4kg,
Multi-walled carbon nanotube 0.05-0.25kg, nano silica 15-25kg.
The mechanical property and durability of existing this nano-material composite concrete with super high performance get a promotion, and use year
Limit increase, but by existing this ultra-high performance concrete be used for rock it is extra large or border on the sea area municipal works, science of bridge building,
When port and pier, Tunnel Engineering, house construction engineering, because chloride ion enters in concrete under marine environment, and gather in rebar surface,
Reinforcing bar can be promoted to generate electrochemical corrosion, so that Corrosion Reinforcement, extends concrete gradually, form microcrack, microcrack is deposited
In the pore structure that can change inside concrete, increase porosity, so that concrete water absorption rate increases, durability reduces, and influences
The impermeability of concrete becomes an important factor for restricting Development of HPC.
Therefore, the corrosion resistance of chloride ion ability of concrete how is improved, and the impermeability for enhancing concrete is to need to solve
Certainly the problem of.
Summary of the invention
In view of the deficienciess of the prior art, the first purpose of this invention is to provide a kind of impervious corrosion resistance of chloride ion
Concrete, impervious effect good advantage strong with the resistance of concrete to chloride ion penetration.
Second object of the present invention is to provide a kind of preparation method of impervious corrosion resistance of chloride ion concrete, have
Advantage easy to operate, easily prepared.
To realize above-mentioned first purpose, the present invention provides the following technical scheme that a kind of impervious corrosion resistance of chloride ion is mixed
Solidifying soil, comprises the following components in parts by weight: 350-450 parts of cement, 670-710 parts of fine aggregates, 950-1200 parts of coarse aggregates, 168-
198 parts of water, 55-70 parts of flyash, 35-55 parts of silicon powders, 8.5-11.5 parts of water-reducing agents, 0.04-0.08 parts of air entraining agents, 35-65 parts
Modified alta-mud, 40-60 part kaolin, 30-50 parts of ground slags, 20-30 parts of modified rubber particles, 20-45 parts of water-absorbing resins；
The method for preparing modified bentonite is as follows: (1) bentonite being put into ball mill, ball milling is at bentonite powder, by swelling
Native powder is placed in the mixed solution of sulfuric acid and glacial acetic acid, is impregnated 1-2h, is washed with distilled water to neutrality；Bentonite powder and mixed
The mass ratio of solution is closed as 1:3-4, the mass ratio of sulfuric acid and glacial acetic acid is 1:1-2；
(2) the bentonite powder obtained after impregnating step (1), which is placed at 800-1200 DEG C, calcines 0.3-0.5h, takes out, and is added
Tetrahydrofuran or urea stir 15-30min, and modified alta-mud is made, bentonite powder and tetrahydrofuran or urea after immersion
Mass ratio is 1:3-5.
By using above-mentioned technical proposal, due to using modified alta-mud, ground slag, modified rubber particle and water suction tree
The raw materials such as rouge prepare impervious corrosion resistance of chloride ion concrete, because modified alta-mud has huge after overpickling, have and huge compare table
Area, tetrahydrofuran or urea are adsorbed on bentonitic surface under mechanical work, into bentonite clay particle gap, make swelling
Soil is fully dispersed, and is modified to bentonite, can block pore pipeline and microcrack in time, and blocks and eliminate salt and lose item
Part substantially reduces the dry of concrete and shrinks, reduces the porosity of concrete, and part material is made to pass through evaporation and diffusion to extraneous ring
Moisture in border is acted on by self-desiccation to be consumed, and modified alta-mud can accelerate the early hydration rate of cement, flyash with silicon powder
It is lower than cement with the hydration activity of ground slag, can accordingly compensates the growth of chemical shrinkage caused by modified alta-mud.
The C3A content of ground slag is high, and the alkalinity of hydrated product is low, and the ability in conjunction with chloride ion is strong, and in ground slag
Sulfate ion content is few, and the binding ability of chloride ion is influenced small, water uptake expansion resin incorporation coagulation by sulfate ion
It in soil, can be uniformly dispersed in concrete, play the role of internal tank, the moisture that supplement concrete hydrating needs, drop
The problem of low concrete shrinkage cracking, while can overcome the disadvantages that crack or the hole of inside concrete, concrete is surface-treated,
The transmission path of the etching mediums such as chloride ion is truncated, improves the corrosion resistance of chloride ion ability of concrete；When moisture in water-absorbing resin
When fading away, water-absorbing resin volume contraction, and left in inside concrete it is more porous, at this time originally because water-absorbing resin absorb water
The modified rubber particle for expanding and compressing restores to the original state, and fills the hole occurred by water-absorbing resin dehydration, blocks pore pipe
Road and microcrack, prevent Chloride Attack, improve the anti-permeability performance and durability of concrete.
Further, the modified rubber particle is made of following methods: (1) 3-6 parts by weight of rubber particle being placed in 6-
10 parts by weight concentration are to impregnate 30-60min in the liquor natrii hypochloritis of 8-10%, rinse when with distillation to neutrality, are placed in red
It is dried under outer lamp；
(2) 5-8 parts by weight particles of polylactic acid is heated to 155-185 DEG C, pbo fiber is ground into powder, the side into polylactic acid
It stirs side and 1-2 parts by weight pbo fiber powder and 0.1-0.3 weight account polyethylene wax is added, be uniformly mixed, step (1) is added and is made
Rubber grain, be dried at room temperature for water content that modified rubber particle is made lower than 5%.
By using above-mentioned technical proposal, with the strong oxidizing property of sodium hypochlorite, the surface of oxidation and corrosion rubber grain will
The double bond of rubber particle surface, methylene isoreactivity radical oxidation improve rubber grain at hydroxyl, carbonyl, aldehyde radical and carboxyl
Hydrophily enhances the mechanical performance of rubber particle surface, improves the interface interaction between rubber grain and concrete mortar, makes
Rubber grain and linking for concrete mortar are more close, improve cohesive force, and then improve the intensity and toughness of concrete, make to mix
The cracking resistance and anti-permeability performance for coagulating soil increase.
Pbo fiber and the polyethylene wax as dispersing agent is added in particles of polylactic acid heating and melting, makes pbo fiber in poly- cream
It is uniformly dispersed in acid, adds rubber grain, rubber grain can be adhered on pbo fiber, and after dry, polylactic acid is in pbo fiber
With one layer of plastic foil that can be degraded of formation on rubber grain, polylactic acid membrane can prevent the erosion of chloride ion, and prevent crack from expanding
Exhibition, after polylactic acid membrane is degraded, rubber grain and pbo fiber are released, and can still continue the extension of crack preventing,
Keep concrete impermeability more lasting.
Further, the ground slag by slag, nano grade silica particles and starch after mixing, in 1300-
10-12h is sintered at 1500 DEG C, crushing is made, and the mass ratio of slag, nano silica and starch is 1:(0.5-0.8):
(0.2-0.4)。
By using above-mentioned technical proposal, sulfate radical content is low in slag, reduces the competing of sulfate ion and chloride ion
Power is striven, so that slag combination chloride ion generates salt and influenced by sulfate ion small, and the hydrated product alkalinity of slag is low, makes
The capability improving of slag combination chloride ion, and nano silica can enhance the hydrophobicity of ground slag, and be filled in slag
Hole between, the capillary channel in plugging cement, make concrete early stage generate expansion, prevent the intrusion of chloride ion.
Further, the fine aggregate is one in river sand, quartz sand and limestone sand that fineness modulus is 2.5-3.0
Kind, clay content≤3%.
By using above-mentioned technical proposal, the fineness modulus of fine aggregate is suitable for that concrete is made to have preferable workability, is constructed
Workability is good, easily stirs, and fine aggregate is filled in the hole between coarse aggregate, improves the compactness and intensity of concrete, reduces
Concrete hollow gap rate reduces concrete disintegration, bleeding, improves concrete strength.
Further, it is the uniform lime stone of 5-31.5mm gradation, crushed gravel or granite that the coarse aggregate, which is partial size, is contained
Mud amount≤1%, flat-elongated particles content≤8%.
By using above-mentioned technical proposal, flat-elongated particles content is suitable in coarse aggregate, can effectively improve concrete
Intensity, ballast grain sizes are reasonable, avoid particle larger, so that the hole between rubble is larger, cause concrete strength lower, rationally
The partial size of rubble is controlled, and forms rational gradation composition with sand and flyash, the compactness of concrete can be improved, to improve coagulation
The cracking resistance and anti-permeability performance of soil.
Further, the air entraining agent is sodium abietate, sodium alkyl benzene sulfonate, fatty alcohol polyoxyethylene ether, triterpenoid saponin
One or more of composition.
By using above-mentioned technical proposal, air entraining agent can make inside concrete generate disconnected bubble, these bubbles
As ball, the frictional resistance between particles of aggregates is reduced, the mobility of mixture is increased, reduces bleeding quantity, truncation
Capillary channel changes pore structure, to improve the anti-permeability performance of concrete.
Further, the flyash is II grade of flyash of F class, and the fineness (45 μm of square hole screens tail over) of flyash is 13-
18%, water demand ratio 98-100%, loss on ignition 5.5-5.8%, water content 0.2-0.4%.
By using above-mentioned technical proposal, the active constituent of flyash is silica and aluminum oxide, with cement water
After changing product mixing, relatively stable cementitious material can be generated, to make concrete intensity with higher, while flyash
In 70% or more particle be amorphous spherical glass body, primarily serve ball bearing effect, sent out in concrete mix
Lubricating action is waved, improves the workability of concrete mix, and flyash and rubble etc. constitute rational gradation composition, is made each other mutually
It mutually fills, concrete density can be effectively increased, further increase the compression strength of concrete, keep concrete structure closely knit, no
Easily infiltration cracking.
The water-reducing agent is aliphatic (hydroxyl) the sulfonate high efficiency water reducing agent and naphthalene series high-efficiency that mass ratio is 1:0.7-1.3
Water-reducing agent.
Further, by using above-mentioned technical proposal, aliphatic (hydroxyl) sulfonate high efficiency water reducing agent fits cement
Answering property is good, and dispersibility is strong, and water-reducing rate can significantly improve the early strength of concrete up to 15-30%, effectively
The heat of hydration for reducing cement prevents concrete from generating contraction, prevents concrete from cracking because of contraction；Naphthalene series high-efficiency water-reducing agent
Strong peptizaiton can be generated to cement particle, and can prevent the cement particle cohesion of dispersion, so that cement slurry
Yield stress and plastic viscosity reduce so that concrete mortar has certain ability for keeping plasticity；Polycarboxylate water-reducer with
The compatibility of cement is good, makes the slump-retaining of concrete can be good, early stage, the later period that can increase substantially concrete are strong
Degree.
To realize above-mentioned second purpose, the present invention provides the following technical scheme that a kind of impervious corrosion resistance of chloride ion is mixed
Coagulate the preparation method of soil, comprising the following steps:
S1, the water absorbing resin particle that water-absorbing resin is ground into 80-100 mesh, and 1-5h is impregnated into the water, after being absorbed water
Water-absorbing resin；
S2, cement, coarse aggregate, fine aggregate, flyash, silicon powder, water-reducing agent, water and air entraining agent are mixed, stirs evenly and is made mixed
Close object A；
S3, modified alta-mud, kaolin, ground slag, modified rubber particle are uniformly mixed, the water-absorbing resin after water suction is added
It with mixture A, stirs evenly, impervious corrosion resistance of chloride ion concrete is made
By using above-mentioned technical proposal, preparation method is simple, and the concrete prepared has stronger compression strength, well
Anti-permeability performance, cracking resistance and chloride resisting properties.
In conclusion the invention has the following advantages:
The first, mixed using the preparation of the raw materials such as modified alta-mud, ground slag, water-absorbing resin and modified rubber particle due to the present invention
Solidifying soil can substantially reduce the dry of concrete and shrink since bentonite surface area is huge after modified, by adsorption chlorine from
Son can prevent the diffusion of chloride ion, and the content of C3A and sulfate ion is low in ground slag, and the alkalinity of hydrated product is small, knot
The ability for closing chloride ion is strong, chloride ion can be prevented deeply to spread, and water-absorbing resin and modified rubber particle combine, and can reduce concrete
It is dry shrink, and the permeation pathway of chloride ion is truncated, keeps inside concrete more closely knit, it is chloride resisting properties, impervious
Performance and endurance quality are preferable.
The second, preferably rubber grain is modified using polylactic acid and pbo fiber in the present invention, since polylactic acid can wrap
It is rolled on pbo fiber powder and rubber grain, one layer of shell degradation and the preferable film of hydrophobicity can be formed after polylactic acid is dry, thus
The infiltration of moisture and the erosion of chloride ion can be prevented, the ability of the impervious and corrosion resistance of chloride ion of concrete is improved, works as polylactic acid
After being biodegradable, pbo fiber powder and rubber grain are released, and can prevent the extension of microcrack, prevent chloride permeability, PBO
The intensity of fiber is high, elasticity modulus is good, light and soft, can alleviate the extension of microcrack, improve the anti-permeability performance of concrete.
Preferably using slag, the method for nano silica and starch in third, the present invention, silica has row to water
Reprimand ability, hydrophobicity is preferable, and starch can increase the caking property of concrete, retentiveness and bloating tendency, has concrete preferable
Hydrophobicity reduces the dry of concrete and shrinks, improves its anti-permeability performance.
Specific embodiment
Invention is further described in detail with reference to embodiments.
The preparation example 1-3 of modified alta-mud
The sodium bentonite that bentonite is PRT-B6D3 selected from the article No. that Zhan Teng mineral products processing factory sells in preparation example 1-3, four
It is the tetrahydrofuran that the article No. that Chemical Co., Ltd. sells is THF that hydrogen furans, which is selected from Guangzhou U.S.A, and urea is selected from Suzhou moral Ba Huagong
The article No. that Co., Ltd sells is the urea of DB-33.
Preparation example 1:(1) bentonite is put into ball mill, ball milling is placed in sulfuric acid at bentonite powder, by bentonite powder
In the mixed solution of glacial acetic acid, 1h is impregnated, neutrality is washed with distilled water to；The mass ratio of bentonite powder and mixed solution is
The mass ratio of 1:3, sulfuric acid and glacial acetic acid is 1:1；
(2) the bentonite powder obtained after impregnating step (1), which is placed at 800 DEG C, calcines 0.5h, takes out, and tetrahydrofuran is added,
15min is stirred, modified alta-mud is made, the mass ratio of bentonite powder and tetrahydrofuran is 1:3 after immersion.
Preparation example 2:(1) bentonite is put into ball mill, ball milling is placed in sulfuric acid at bentonite powder, by bentonite powder
In the mixed solution of glacial acetic acid, 1.5h is impregnated, neutrality is washed with distilled water to；The mass ratio of bentonite powder and mixed solution
For 1:3.5, the mass ratio of sulfuric acid and glacial acetic acid is 1:1.5；
(2) the bentonite powder obtained after impregnating step (1), which is placed at 1000 DEG C, calcines 0.4h, takes out, and urea, stirring is added
Modified alta-mud is made in 25min, and the mass ratio of bentonite powder and urea is 1:4 after immersion.
Preparation example 3:(1) bentonite is put into ball mill, ball milling is placed in sulfuric acid at bentonite powder, by bentonite powder
In the mixed solution of glacial acetic acid, 2h is impregnated, neutrality is washed with distilled water to；The mass ratio of bentonite powder and mixed solution is
The mass ratio of 1:4, sulfuric acid and glacial acetic acid is 1:2；
(2) the bentonite powder obtained after impregnating step (1), which is placed at 1200 DEG C, calcines 0.3h, takes out, and tetrahydrofuran is added,
35min is stirred, modified alta-mud is made, the mass ratio of bentonite powder and tetrahydrofuran is 1:5 after immersion.
The preparation example 4-6 of modified rubber particle
Rubber grain is selected from the rubber grain that the article No. that commerce and trade Co., Ltd, Qufu City Xinhua sells is 118 in preparation example 4-6, gathers
Lactic acid is selected from the polylactic acid that the trade mark that Dongguan City tortoise beetle plastic cement Co., Ltd sells is 3100HP, and pbo fiber is raw selected from Dongguan City
The article No. that luxuriant specific manufacture Co., Ltd sells is the pbo fiber of SM061, polyethylene wax preparation example 4:(1) by 3kg rubber grain
It is placed in the liquor natrii hypochloritis that 6kg concentration is 8%, impregnates 60min, rinse when with distillation to neutrality, be placed under infrared lamp
Drying, the partial size of rubber grain are 40 mesh；
(2) 5kg particles of polylactic acid is heated to 1550 DEG C, pbo fiber is ground into powder, is added while stirring into polylactic acid
1kg pbo fiber powder and 0.1kg polyethylene wax are uniformly mixed, and rubber grain made from step (1) is added, is dried at room temperature for
It is lower than 5% to water content, modified rubber particle is made, the average grain diameter of pbo fiber powder is 200 mesh.
Preparation example 5:(1) 4.5kg rubber grain is placed in the liquor natrii hypochloritis that 8kg concentration is 9%, 45min is impregnated,
It rinses when with distillation to neutrality, is placed under infrared lamp and dries, the partial size of rubber grain is 40 mesh；
(2) 6.5kg particles of polylactic acid is heated to 170 DEG C, pbo fiber is ground into powder, added while stirring into polylactic acid
Enter 1.5kg pbo fiber powder and 0.2kg polyethylene wax, be uniformly mixed, rubber grain made from step (1) is added, at room temperature
It is dry to be lower than 5% to water content, modified rubber particle is made, the average grain diameter of pbo fiber powder is 200 mesh preparation example 6:(1) will
6kg rubber grain is placed in the liquor natrii hypochloritis that 10kg concentration is 10%, impregnates 30min, is rinsed when with distillation to neutrality, and
It is placed under infrared lamp and dries, the partial size of rubber grain is 40 mesh；
(2) 8kg particles of polylactic acid is heated to 185 DEG C, pbo fiber is ground into powder, is added while stirring into polylactic acid
2kgPBO fiber powder and 0.3kg polyethylene wax, be uniformly mixed, be added step (1) made from rubber grain, be dried at room temperature for
Water content is lower than 5%, and modified rubber particle is made, and the average grain diameter of pbo fiber powder is 200 mesh
Embodiment
Silicon powder in following embodiment, kaolin are selected from the kaolinite that the article No. that mineral products processing factory, Lingshou County Hengchang sells is a-456
Soil, aliphatic (hydroxyl) sulfonate high efficiency water reducing agent are selected from the double RS-3 type aliphatic hydroxyl sold up to building materials Co., Ltd in Beijing
Base sulfonate high efficiency water reducing agent, naphthalene series high-efficiency water-reducing agent are selected from the model FDN that sapphire member new material Co., Ltd in Jinan sells
Naphthalene series high-efficiency water-reducing agent, sodium abietate be selected from Zhengzhou Kang Fei Chemical Co., Ltd. sell article No. be 1023 sodium abietate,
Neopelex is selected from the dodecyl benzene sulfonic acid that the article No. that Yin Huan Chemical Co., Ltd. in Guangzhou sells is LAS-70
Sodium, fatty alcohol polyoxyethylene ether are selected from the fatty alcohol for the model AEO-9 that the excellent rope chemical science and technology strength Co., Ltd in Shandong sells
Polyoxyethylene ether, triterpenoid saponin are selected from the triterpenoid saponin that the article No. that Zhengzhou Rong Hui chemical products Co., Ltd sells is 16153, receive
Rice silica is selected from the nano silica for the model A300 that Lingshou County Shuo Long mineral products processing factory sells, and starch is selected from wide
The cornstarch for the model HX-205 that state city and emerging Chemical Co., Ltd. sell, water-absorbing resin are selected from Renqiu City E-BANG environmental protection section
The water-absorbing resin that the article No. that skill Co., Ltd sells is 5211, slag are selected from the article No. that Lingshou County great Hao mineral products processing factory sells
For 031 slag.
Embodiment 1: a kind of impervious corrosion resistance of chloride ion concrete, raw material proportioning is as shown in table 1, the impervious resisting chloride ion penetration
The preparation method of corrosion concrete the following steps are included:
S1, by 20kg/m3Water-absorbing resin is ground into the water absorbing resin particle of 80 mesh, and impregnates 1h into the water, after obtaining water suction
Water-absorbing resin；
S2, by 350kg/m3Cement, 1200kg/m3Coarse aggregate, 710kg/m3Fine aggregate, 55kg/m3Flyash, 35kg/m3Silicon
Powder, 8.5kg/m3Water-reducing agent, 168kg/m3Water and 0.04kg/m3Air entraining agent mixing, stirs evenly obtained mixture A；Wherein cement
For P.O42.5 cement, it is the uniform lime stone of 5-31.5mm gradation that coarse aggregate, which is partial size, clay content≤1%, and flat-elongated particles contain
Amount≤8%, fine aggregate are the river sand that fineness modulus is 2.5, and clay content≤3%, flyash is II grade of flyash of F class, flyash
Fineness (45 μm of square hole screens tail over) be 13%, water demand ratio 98%, loss on ignition 5.5%, water content 0.2%, diminishing
Agent is aliphatic (hydroxyl) the sulfonate high efficiency water reducing agent that mass ratio is 1:0.7 and naphthalene series high-efficiency water-reducing agent, air entraining agent are rosin
Sour sodium；
S3, by 35kg/m3Modified alta-mud, 40kg/m3Kaolin, 30kg/m3Ground slag, 20kg/m3Modified rubber particle is mixed
It closes uniformly, water absorbing resin particle and mixture A after water suction is added stir evenly, impervious corrosion resistance of chloride ion concrete are made；
Modified alta-mud is made of preparation example 1, ground slag by slag, nano grade silica particles and starch after mixing, In
12h is sintered at 1300 DEG C, crushing is made, and the average grain diameter of ground slag is 2mm, the matter of slag, nano silica and starch
Amount ratio is 1:0.5:0.2, and modified rubber particle is made of preparation example 4.
The raw material proportioning of impervious corrosion resistance of chloride ion concrete in 1 embodiment 1-5 of table
Embodiment 2: a kind of impervious corrosion resistance of chloride ion concrete, raw material proportioning is as shown in table 1, the impervious corrosion resistance of chloride ion
The preparation method of concrete the following steps are included:
S1, by 25kg/m3Water-absorbing resin is ground into the water absorbing resin particle of 90 mesh, and impregnates 3h into the water, after obtaining water suction
Water-absorbing resin；
S2, by 380kg/m3Cement, 1100kg/m3Coarse aggregate, 700kg/m3Fine aggregate, 58kg/m3Flyash, 40kg/m3Silicon
Powder, 9.5kg/m3Water-reducing agent, 178kg/m3Water and 0.05kg/m3Air entraining agent mixing, stirs evenly obtained mixture A；Wherein cement
For P.O42.5 cement, it is the uniform crushed gravel of 5-31.5mm gradation that coarse aggregate, which is partial size, clay content≤1%, and flat-elongated particles contain
Amount≤8%, fine aggregate are the quartz sand that fineness modulus is 2.8, and clay content≤3%, flyash is II grade of flyash of F class, fine coal
The fineness (45 μm of square hole screens tail over) of ash is 15%, water demand ratio 99%, loss on ignition 5.6%, and water content 0.3% subtracts
Aqua is aliphatic (hydroxyl) the sulfonate high efficiency water reducing agent and naphthalene series high-efficiency water-reducing agent that mass ratio is 1:1, and air entraining agent is 12
Sodium alkyl benzene sulfonate；
S3, by 45kg/m3Modified alta-mud, 45kg/m3Kaolin, 35kg/m3Ground slag, 23kg/m3Modified rubber particle is mixed
It closes uniformly, water absorbing resin particle and mixture A after water suction is added stir evenly, impervious corrosion resistance of chloride ion concrete are made；
Modified alta-mud is made of preparation example 2, ground slag by slag, nano grade silica particles and starch after mixing, In
11h is sintered at 1400 DEG C, crushing is made, and the average grain diameter of ground slag is 3mm, the matter of slag, nano silica and starch
Amount ratio is 1:0.6:0.3, and modified rubber particle is made of preparation example 5.
Embodiment 3: a kind of impervious corrosion resistance of chloride ion concrete, raw material proportioning is as shown in table 1, the impervious resisting chloride ion penetration
The preparation method of corrosion concrete the following steps are included:
S1, by 30kg/m3Water-absorbing resin is ground into the water absorbing resin particle of 100 mesh, and impregnates 5h into the water, after obtaining water suction
Water-absorbing resin；
S2, by 400kg/m3Cement, 1000kg/m3Coarse aggregate, 690kg/m3Fine aggregate, 60kg/m3Flyash, 45kg/m3Silicon
Powder, 10.5kg/m3Water-reducing agent, 188kg/m3Water and 0.06kg/m3Air entraining agent mixing, stirs evenly obtained mixture A；Wherein water
Mud is P.O42.5 cement, and coarse aggregate is that partial size is the uniform granite of 5-31.5mm gradation, clay content≤1%, flat-elongated particles
Content≤8%, fine aggregate are the limestone sand that fineness modulus is 2.8, and clay content≤3%, flyash is II grade of flyash of F class,
The fineness (45 μm of square hole screens tail over) of flyash is 18%, water demand ratio 100%, loss on ignition 5.8%, and water content is
0.4%, water-reducing agent is aliphatic (hydroxyl) the sulfonate high efficiency water reducing agent and naphthalene series high-efficiency water-reducing agent that mass ratio is 1:1.3, is drawn
Gas agent is the fatty alcohol polyoxyethylene ether and triterpenoid saponin that mass ratio is 1:1；
S3, by 55kg/m3Modified alta-mud, 50kg/m3Kaolin, 40kg/m3Ground slag, 25kg/m3Modified rubber particle is mixed
It closes uniformly, water absorbing resin particle and mixture A after water suction is added stir evenly, impervious corrosion resistance of chloride ion concrete are made；
Modified alta-mud is made of preparation example 3, ground slag by slag, nano grade silica particles and starch after mixing, In
10h is sintered at 1500 DEG C, crushing is made, and the average grain diameter of ground slag is 4mm, the matter of slag, nano silica and starch
Amount ratio is 1:0.8:0.4, and modified rubber particle is made of preparation example 6.
Embodiment 4-5: a kind of impervious corrosion resistance of chloride ion concrete is that raw material and dosage are such as with the difference of embodiment 1
Shown in table 1.
Comparative example
Comparative example 1: a kind of impervious corrosion resistance of chloride ion concrete is that modified alta-mud is by swollen in raw material with the difference of embodiment 1
Profit soil substitution.
Comparative example 2: a kind of impervious corrosion resistance of chloride ion concrete is with the difference of embodiment 1, modification is not added in raw material
Rubber grain.
Comparative example 3: a kind of impervious corrosion resistance of chloride ion concrete is with the difference of embodiment 1, is not added in raw material levigate
Slag.
Comparative example 4: a kind of impervious corrosion resistance of chloride ion concrete is with the difference of embodiment 1, water suction is not added in raw material
Resin.
Comparative example 5: it is prepared with embodiment 1 in the Chinese invention patent application file application No. is CN201410807011.0
High-impermeable concrete as control, weigh raw material by component proportion: 100 parts of cement；60 parts of water；105 parts of sand；Rubble 280
Part；0.6 part of silica；1.2 parts of ultrafine slag；4.5 parts of superfine quartz sand；It is 3 parts of property water-reducing agent high；Sodium alkyl benzene sulfonate 4.5
Part；0.5 part of hydrophilic colloid.The cement of weighing, superfine quartz sand and ultrafine slag are poured into blender, stirred 50 seconds；Then
The sand of weighing is poured into blender, is stirred 50 seconds；It is subsequently poured into the water, silica, high property water-reducing agent, alkyl benzene sulphonate of weighing
Sodium and hydrophilic colloid stir 50 seconds, stand 30 seconds；It finally pours into rubble and obtains the high-impermeable concrete after stirring 120 seconds.
Performance detection test
Concrete is prepared according to the method in embodiment 1-5 and comparative example 1-5, and detects the items of concrete in accordance with the following methods
Performance, testing result are reported in Table 2 below:
1, it the slump: is tested according to GB/T50080-2002 " Standard for test methods of properties of ordinary concrete mixture standard "；
2, it compression strength: is tested according to GB/T50081-2002 " normal concrete mechanical test method "；
3, chloride diffusion coefficient: according to GB/T50082-2009 " normal concrete long-term behaviour and durability test method mark
It is quasi- " in " the unstable state migration test of concrete chloride ion transport coefficient-chloride diffusion coefficient money speed tests NT BUILD492 "
It is tested；
4,28d electric flux: according to GB/T50082-2009 " Standard for test methods of longterm performance and durability of ordinary concrete standard "
It is tested；
5, anti-permeability performance: according to GB/T50082-2009 " Standard for test methods of longterm performance and durability of ordinary concrete standard " into
Row test, osmotic pressure 3.5MPa, pressing time 48h；
6,28d dry shrinkage testing: according to GB/T50082-2009 " Standard for test methods of longterm performance and durability of ordinary concrete mark
It is quasi- " it is tested.
The testing concrete performance result of table 2 embodiment 1-5 and comparative example 1-5 preparation
The slump of the impervious corrosion resistance of chloride ion concrete prepared it can be seen from data in table 2 according to method in embodiment 1-5
Degree is big, and little loss of slump, compression strength is strong, and the height of infiltration in 28 days is small, and chloride diffusion coefficient and electric flux are small, shrinks within 28 days
Rate is small, illustrates that the impervious corrosion resistance of chloride ion concrete of preparation example of the present invention has excellent the resistance of concrete to chloride ion penetration and impervious
Effect reduces the dry of concrete and shrinks, keeps concrete not easy to crack.
Comparative example 1 because use bentonite substitute modified alta-mud, the slump and compression strength of concrete are big, but chlorine from
Sub- diffusion coefficient is obvious and electric flux significantly increases, and infiltration height and shrinking percentage increase, and illustrates to enhance using modified alta-mud
The corrosion resistance of chloride ion ability of concrete improves impervious and cracking resistance.
Comparative example 2 because being not added with modified rubber particle, the chlorine of impervious corrosion resistance of chloride ion concrete prepared by comparative example 2 from
Sub- diffusion coefficient is big, and dry shrink increases, and electric flux is larger, illustrates to add modified rubber particle, can reduce the contraction of concrete,
And improve corrosion resistance of chloride ion and anti-permeability performance.
Comparative example 3 is because being not added with ground slag, and the compression strength of concrete is not so good as embodiment 1-5, and permeated height is larger,
Anti-permeability performance is poor, and chloride diffusion coefficient is high, and resisting chloride ion penetration performance is poor.
Comparative example 4 is because being not added with water-absorbing resin, and 28 days shrinking percentages of concrete prepared by comparative example 4 are big, and anti-permeability performance is poor, chlorine
Ionic diffusion coefficient and electric flux are larger, and corrosion resistance of chloride ion ability is poor.
Comparative example 5 is the water-tight concrete of prior art preparation, and concrete prepared by the present invention and comparative example 5 are prepared mixed
Solidifying soil is compared, and anti-permeability performance is good, not easy to crack, and corrosion resistance of chloride ion ability is good.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (9)
1. a kind of impervious corrosion resistance of chloride ion concrete, which is characterized in that comprise the following components in parts by weight: 350-450 parts of water
Mud, 670-710 part fine aggregate, 950-1200 parts of coarse aggregates, 168-198 parts of water, 55-70 parts of flyash, 35-55 parts of silicon powders,
8.5-11.5 parts of water-reducing agents, 0.04-0.08 parts of air entraining agents, 35-65 parts of modified alta-muds, 40-60 parts of kaolin, 30-50 parts of mills
Thin slag, 20-30 parts of modified rubber particles, 20-45 parts of water-absorbing resins；
The method for preparing modified bentonite is as follows: (1) bentonite being put into ball mill, ball milling, will at bentonite powder
Bentonite powder is placed in the mixed solution of sulfuric acid and glacial acetic acid, is impregnated 1-2h, is washed with distilled water to neutrality；Bentonite powder
It is 1:3-4 with the mass ratio of mixed solution, the mass ratio of sulfuric acid and glacial acetic acid is 1:1-2；
(2) the bentonite powder obtained after impregnating step (1), which is placed at 800-1200 DEG C, calcines 0.3-0.5h, takes out, and is added
Tetrahydrofuran or urea stir 15-30min, and modified alta-mud is made, bentonite powder and tetrahydrofuran or urea after immersion
Mass ratio is 1:3-5.
2. impervious corrosion resistance of chloride ion concrete according to claim 1, which is characterized in that the modified rubber particle by
Following methods are made: (1) 3-6 parts by weight of rubber particle are placed in liquor natrii hypochloritis that 6-10 parts by weight concentration be 8-10%,
30-60min is impregnated, is rinsed when with distillation to neutrality, is placed under infrared lamp and dries；
(2) 5-8 parts by weight particles of polylactic acid is heated to 155-185 DEG C, pbo fiber is ground into powder, the side into polylactic acid
It stirs side and 1-2 parts by weight pbo fiber powder and 0.1-0.3 weight account polyethylene wax is added, be uniformly mixed, step (1) is added and is made
Rubber grain, be dried at room temperature for water content that modified rubber particle is made lower than 5%.
3. impervious corrosion resistance of chloride ion concrete according to claim 1, which is characterized in that the ground slag is by mine
Slag, nano grade silica particles and starch after mixing, are sintered 10-12h at 1300-1500 DEG C, and crushing is made, slag,
The mass ratio of nano silica and starch is 1:(0.5-0.8): (0.2-0.4).
4. impervious corrosion resistance of chloride ion concrete according to claim 1, which is characterized in that the fine aggregate is fineness mould
Number is one of river sand, quartz sand and the limestone sand of 2.5-3.0, clay content≤3%.
5. impervious corrosion resistance of chloride ion concrete according to claim 1, which is characterized in that the coarse aggregate is that partial size is
The uniform lime stone of 5-31.5mm gradation, crushed gravel or granite, clay content≤1%, flat-elongated particles content≤8%.
6. impervious corrosion resistance of chloride ion concrete according to claim 1, which is characterized in that the air entraining agent is rosin acid
The composition of one or more of sodium, sodium alkyl benzene sulfonate, fatty alcohol polyoxyethylene ether, triterpenoid saponin.
7. impervious corrosion resistance of chloride ion concrete according to claim 1, which is characterized in that the flyash is F class II
Grade flyash, the fineness (45 μm of square hole screens tail over) of flyash are 13-18%, water demand ratio 98-100%, loss on ignition 5.5-
5.8%, water content 0.2-0.4%.
8. impervious corrosion resistance of chloride ion concrete according to claim 1, which is characterized in that the water-reducing agent is mass ratio
For aliphatic (hydroxyl) the sulfonate high efficiency water reducing agent and naphthalene series high-efficiency water-reducing agent of 1:0.7-1.3.
9. a kind of preparation method of impervious corrosion resistance of chloride ion concrete according to claim 1-8, feature
It is, comprising the following steps:
S1, the water absorbing resin particle that water-absorbing resin is ground into 80-100 mesh, and 1-5h is impregnated into the water, after being absorbed water
Water-absorbing resin；
S2, cement, coarse aggregate, fine aggregate, flyash, silicon powder, water-reducing agent, water and air entraining agent are mixed, stirs evenly and is made mixed
Close object A；
S3, modified alta-mud, kaolin, ground slag, modified rubber particle are uniformly mixed, the water-absorbing resin after water suction is added
Particle and mixture A, stir evenly, and impervious corrosion resistance of chloride ion concrete is made.
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Application publication date: 20191129 |