CN106699984A - Lightweight aggregate floating inhibitor for lightweight aggregate concrete and preparation method of lightweight aggregate floating inhibitor - Google Patents
Lightweight aggregate floating inhibitor for lightweight aggregate concrete and preparation method of lightweight aggregate floating inhibitor Download PDFInfo
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- CN106699984A CN106699984A CN201610535962.6A CN201610535962A CN106699984A CN 106699984 A CN106699984 A CN 106699984A CN 201610535962 A CN201610535962 A CN 201610535962A CN 106699984 A CN106699984 A CN 106699984A
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- Prior art keywords
- lightweight aggregate
- unsaturated
- floating inhibitor
- inhibitor according
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
- C04B24/161—Macromolecular compounds comprising sulfonate or sulfate groups
- C04B24/163—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/165—Macromolecular compounds comprising sulfonate or sulfate groups obtained by reactions only involving carbon-to-carbon unsaturated bonds containing polyether side chains
-
- 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
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/408—Dispersants
-
- 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
- C04B2103/44—Thickening, gelling or viscosity increasing agents
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a lightweight aggregate floating inhibitor for lightweight aggregate concrete and a preparation method of the lightweight aggregate floating inhibitor. The lightweight aggregate floating inhibitor is obtained by polymerizing monomers such as unsaturated polyoxyethylene ether, unsaturated carboxylic acid, unsaturated esters, unsaturated sulfonate and the like by virtue of free radicals, and a molecular weight is between 200000 and 500000. A product has tackifying and dispersion effects, can remarkably inhibit the floating of the lightweight aggregates and the separation of gelatinization aggregates, and ensures the homogeneity and pumpability of the lightweight aggregate concrete.
Description
Technical field
The present invention relates to lightweight aggregate concrete additive, belong to building material technical field.
Background technology
In recent years, lightweight aggregate concrete with its lightweight, high-strength, insulation, heat-insulated, antidetonation, it is wear-resisting the advantages of in all kinds of engineerings
In be widely applied.But lightweight aggregate density is small in lightweight aggregate concrete, under high slump, mixture is easily isolated, bleeding,
Lightweight aggregate floats, drift, and causing concrete density skewness and building after pumping difficulties, hardening, intensity distribution is unequal asks
Topic, has a strong impact on construction speed and construction quality.
Regarding to the issue above, the water soluble polymers such as cellulose ether, polyacrylamide are presently mainly mixed, by improving
The viscosity of mixture come suppress lightweight aggregate float, but cause mixture mobility reduction, compromise the pump-conveying property of mixture.
The content of the invention
The present invention is regarding to the issue above, there is provided a kind of lightweight aggregate floating inhibitor and its system for lightweight aggregate concrete
Preparation Method.
To achieve the above object, the technical scheme is that：
A kind of preparation method of lightweight aggregate floating inhibitor for lightweight aggregate concrete, the lightweight aggregate floating inhibitor is profit
Obtained by radical polymerization with monomers such as unsaturated APEO, unsaturated carboxylic acid, unsaturated esters, unsaturated sulfonic acid salt
, molecular weight is between 200000~500000.
Each component weight ratio of the present invention is, 40~60 parts of unsaturated APEO, 0~40 part of unsaturated carboxylic acid, insatiable hunger
With 0~20 part of esters, 0~30 part of unsaturated sulfonic acid salt, 1~8 part of system of initiation, 100~200 parts of water；
The unsaturated APEO that the present invention is used is methyl allyl polyoxyethylene ether, and molecular weight is 2400；
The unsaturated carboxylic acid class monomer that the present invention is used is acrylic acid；
The unsaturated esters monomer that the present invention is used is hydroxy-ethyl acrylate；
The organic sulfonic acid class monomer that the present invention is used is made up of methylpropene sodium sulfonate, 2- acrylamide-2-methyl propane sulfonics
, methylpropene sodium sulfonate is 0~3 with the weight ratio of 2- acrylamide-2-methyl propane sulfonics；
The initiator that the present invention is used is made up of hydrogen peroxide, ascorbic acid, the weight ratio of hydrogen peroxide and ascorbic acid for 1~
2；
Present invention also offers a kind of lightweight aggregate floating inhibitor preparation method for lightweight aggregate concrete, it is characterised in that bag
Include following steps：
(1) in weighing methyl allyl polyoxyethylene ether, 2- acrylamide-2-methyl propane sulfonics, hydrogen peroxide, water to reactor,
Temperature control is at 20~40 DEG C, and stirring is complete to dissolving；
(2) acrylic acid, methylpropene sodium sulfonate, hydroxy-ethyl acrylate, ascorbic acid, water are weighed, dropwise addition is added to after being well mixed
In device；
(3) after dissolution of raw material in step (1) completely afterwards open Dropping feeder, time for adding is controlled in 2~3.5h.After completion of dropping
1~2h of isothermal reaction, obtains product.
Beneficial effects of the present invention：
Product of the invention is a kind of macromolecule of comb shaped structure, mix lightweight aggregate concrete in after can increase fresh concrete
The viscosity of system, suppresses aggregate and is floated with Binder Materials isolation, aggregate.Product of the invention has peptizaiton simultaneously, can
Absorption is acted on Binder Materials and lightweight aggregate surface by Coulomb repulsion and steric hindrance, and making newly to mix lightweight aggregate concrete has
Good stability.
Brief description of the drawings：
Fig. 1 is the structural representation of lightweight aggregate floating inhibitor.
Specific embodiment
Embodiment 1
Weigh 40 parts of methyl allyl polyoxyethylene ether, 5 parts of 2- acrylamide-2-methyl propane sulfonics, 0.86 part of hydrogen peroxide, water
100 parts complete to dissolving to stirring in reactor, and reaction temperature is controlled at 30 DEG C；35 parts of acrylic acid, methylpropene sodium sulfonate 5
Part, 0.60 part of ascorbic acid, 40 parts of water, add in Dropping feeder after being well mixed, and are added dropwise after dissolution of raw material in kettle is complete, drop
Plus time control isothermal reaction 1.5h after 2.5h, completion of dropping, obtain lightweight aggregate floating inhibitor.
Embodiment 2
Weigh 50 parts of methyl allyl polyoxyethylene ether, 10 parts of 2- acrylamide-2-methyl propane sulfonics, 0.86 part of hydrogen peroxide, water
100 parts complete to dissolving to stirring in reactor, and reaction temperature is controlled at 30 DEG C；25 parts of acrylic acid, 10 parts of hydroxy-ethyl acrylate,
10 parts of methylpropene sodium sulfonate, 0.60 part of ascorbic acid, 40 parts of water, Dropping feeder is added to after being well mixed, and raw material is molten in treating kettle
Solution is completely rear to be added dropwise, and time for adding is controlled in 2.5h.Isothermal reaction 1.5h after completion of dropping, obtains lightweight aggregate floating inhibitor.
Embodiment 3
Weigh 60 parts of methyl allyl polyoxyethylene ether, 5 parts of 2- acrylamide-2-methyl propane sulfonics, 0.86 part of hydrogen peroxide, water
100 parts complete to dissolving to stirring in reactor, and reaction temperature is controlled at 30 DEG C；20 parts of acrylic acid, 15 parts of hydroxy-ethyl acrylate,
15 parts of methylpropene sodium sulfonate, 0.60 part of ascorbic acid, 40 parts of water, add in Dropping feeder after being well mixed, and treat raw material in kettle
It is added dropwise after dissolving completely, time for adding is controlled in 2.5h.Isothermal reaction 1.5h after completion of dropping, be inhibited agent.
50 parts of poly carboxylic acid series water reducer is weighed, 0.0005 part of defoamer is obtained after air entraining agent 0.0005,50 parts of water are well mixed
To additive I.
Weigh 0.002 part of 1 product of embodiment, 50 parts of poly carboxylic acid series water reducer, 0.0005 part of defoamer, air entraining agent
0.0005th, admixture II is obtained after 50 parts of water is well mixed.
Weigh 0.002 part of 2 product of embodiment, 50 parts of poly carboxylic acid series water reducer, 0.0005 part of defoamer, air entraining agent
0.0005th, admixture II I is obtained after 50 parts of water is well mixed.
Weigh 0.002 part of 3 product of embodiment, 50 parts of poly carboxylic acid series water reducer, 0.0005 part of defoamer, air entraining agent
0.0005th, additive IV is obtained after 50 parts of water is well mixed.
Weigh 0.02 part of cellulose ether, 50 parts of poly carboxylic acid series water reducer, 0.0005 part of defoamer, air entraining agent 0.0005, water
50 parts it is well mixed after obtain additive V.
Lightweight aggregate concrete match ratio (the unit of table 1：kg/m3)
Note：Water consumption is total water consumption, is to dry haydite during mixing.
The new mobility of mixing lightweight aggregate concrete, layering result, compression strength of the table 2 mixed with different inhibitor
From the results contrast of table 2, the lightweight aggregate floating inhibitor provided by the present invention for lightweight aggregate concrete is mixed to hardening
The compression strength for coagulating soil is not adversely affected, and can suppress aggregate with Binder Materials isolation, lightweight aggregate floating, it is ensured that newly mixed mixed
Solidifying soil has good homogeneity, mobility and pumpability.
Claims (8)
1. the invention discloses a kind of lightweight aggregate floating inhibitor for lightweight aggregate concrete and preparation method thereof, the light bone
Material floating inhibitor is existed by monomers such as unsaturated APEO, unsaturated carboxylic acid, unsaturated esters, unsaturated sulfonic acid salt
The product obtained by radical polymerization under the effect of initiation system, molecular weight is between 200000~500000.
2. lightweight aggregate floating inhibitor according to claim 1, it is characterised in that：Each component weight ratio is, unsaturated polyoxy
40~60 parts of vinethene, 0~40 part of unsaturated carboxylic acid, unsaturated 0~20 part of esters, 0~30 part of organic sulfonic acid class, initiation system
1~8 part, 100~200 parts of water.
3. lightweight aggregate floating inhibitor according to claim 1, it is characterised in that：Unsaturated APEO is methallyl
Base APEO, molecular weight is 2400.
4. lightweight aggregate floating inhibitor according to claim 1, it is characterised in that：Unsaturated carboxylic acid class monomer is acrylic acid.
5. lightweight aggregate floating inhibitor according to claim 1, it is characterised in that：Unsaturated esters monomer is acrylic acid hydroxyl second
Ester.
6. lightweight aggregate floating inhibitor according to claim 1, it is characterised in that：Unsaturated sulfonic acid salt monomer is by methyl-prop
Alkene sodium sulfonate, 2- acrylamide-2-methyl propane sulfonics compositions, methylpropene sodium sulfonate and 2- acrylamide -2- methyl-prop sulphurs
The weight ratio of acid is 0~3.
7. lightweight aggregate floating inhibitor according to claim 1, it is characterised in that：Initiator is by hydrogen peroxide, ascorbic acid
Composition, hydrogen peroxide is 1~2 with the weight ratio of ascorbic acid.
8. the preparation method of lightweight aggregate floating inhibitor according to claim 1, it is characterised in that：Comprise the following steps：
（1）In weighing methyl allyl polyoxyethylene ether, 2- acrylamide-2-methyl propane sulfonics, hydrogen peroxide, water to reactor,
Temperature control is at 20~40 DEG C, and stirring is complete to dissolving；
（2）Acrylic acid, methylpropene sodium sulfonate, hydroxy-ethyl acrylate, ascorbic acid, water are weighed, dropwise addition is added to after being well mixed
In device；
（3）Treat step（1）Middle dissolution of raw material opens Dropping feeder afterwards completely, and time for adding is controlled in 2~3.5h,
1~2h of isothermal reaction after completion of dropping, obtains product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610535962.6A CN106699984B (en) | 2016-07-10 | 2016-07-10 | A kind of lightweight aggregate floating inhibitor and preparation method thereof for lightweight aggregate concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610535962.6A CN106699984B (en) | 2016-07-10 | 2016-07-10 | A kind of lightweight aggregate floating inhibitor and preparation method thereof for lightweight aggregate concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106699984A true CN106699984A (en) | 2017-05-24 |
| CN106699984B CN106699984B (en) | 2019-05-17 |
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| CN201610535962.6A Expired - Fee Related CN106699984B (en) | 2016-07-10 | 2016-07-10 | A kind of lightweight aggregate floating inhibitor and preparation method thereof for lightweight aggregate concrete |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107673693A (en) * | 2017-09-30 | 2018-02-09 | 中交公路长大桥建设国家工程研究中心有限公司 | Suppress the lightweight concrete that aggregate floats |
| WO2021114581A1 (en) * | 2019-12-12 | 2021-06-17 | 科之杰新材料集团有限公司 | Polycarboxylic workable regulator preparation method |
| CN113336464A (en) * | 2021-07-28 | 2021-09-03 | 湖南大学 | Concrete thickener and preparation method thereof |
| CN114230299A (en) * | 2021-12-30 | 2022-03-25 | 湖北工业大学 | Full-solid-waste high-performance light material and preparation method and application thereof |
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| CN103539889A (en) * | 2013-10-15 | 2014-01-29 | 中建商品混凝土成都有限公司 | Anti-segregating agent used for concrete, and preparation method thereof |
| CN103554392A (en) * | 2013-11-04 | 2014-02-05 | 上海三瑞高分子材料有限公司 | Thickener copolymer as well as preparation method and application thereof |
| CN103554387A (en) * | 2013-11-04 | 2014-02-05 | 上海三瑞高分子材料有限公司 | Thickener copolymer as well as preparation method and application thereof |
| CN103980433A (en) * | 2014-05-16 | 2014-08-13 | 武汉汉星盛新型建材有限公司 | Carboxylate-vinyl copolymer concrete thickener and preparation method thereof |
| CN104231152A (en) * | 2014-10-09 | 2014-12-24 | 江苏奥莱特新材料有限公司 | Preparation method of concrete thickener |
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| CN103539889A (en) * | 2013-10-15 | 2014-01-29 | 中建商品混凝土成都有限公司 | Anti-segregating agent used for concrete, and preparation method thereof |
| CN103554392A (en) * | 2013-11-04 | 2014-02-05 | 上海三瑞高分子材料有限公司 | Thickener copolymer as well as preparation method and application thereof |
| CN103554387A (en) * | 2013-11-04 | 2014-02-05 | 上海三瑞高分子材料有限公司 | Thickener copolymer as well as preparation method and application thereof |
| CN103980433A (en) * | 2014-05-16 | 2014-08-13 | 武汉汉星盛新型建材有限公司 | Carboxylate-vinyl copolymer concrete thickener and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107673693A (en) * | 2017-09-30 | 2018-02-09 | 中交公路长大桥建设国家工程研究中心有限公司 | Suppress the lightweight concrete that aggregate floats |
| WO2021114581A1 (en) * | 2019-12-12 | 2021-06-17 | 科之杰新材料集团有限公司 | Polycarboxylic workable regulator preparation method |
| CN113336464A (en) * | 2021-07-28 | 2021-09-03 | 湖南大学 | Concrete thickener and preparation method thereof |
| CN114230299A (en) * | 2021-12-30 | 2022-03-25 | 湖北工业大学 | Full-solid-waste high-performance light material and preparation method and application thereof |
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| Publication number | Publication date |
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| CN106699984B (en) | 2019-05-17 |
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