CN106565129A - Thickening agent for lightweight aggregate concrete - Google Patents
Thickening agent for lightweight aggregate concrete Download PDFInfo
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- CN106565129A CN106565129A CN201510647739.6A CN201510647739A CN106565129A CN 106565129 A CN106565129 A CN 106565129A CN 201510647739 A CN201510647739 A CN 201510647739A CN 106565129 A CN106565129 A CN 106565129A
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- lightweight aggregate
- aggregate concrete
- thickening agent
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Abstract
The invention discloses a thickening agent for lightweight aggregate concrete, wherein the raw materials comprise, by weight, 45-61 parts of acrylic acid, 0.3-0.5 part of an initiator, 45-55 parts of ammonia water, 1-4 parts of a molecular weight adjusting agent, 33-50 parts of deionized water, 0.1-0.3 part of a cross-linking agent, 4-7 parts of an emulsifier S-80, 41-47 parts of a solvent oil, 4-12 parts of cellulose ether, and 7-12 parts of sodium gluconate. According to the present invention, the lightweight aggregate concrete mixture using the thickening agent has characteristics of no layering, no segregation, no bleeding, good cohesion, good dispersion resistance, good stability, good homogeneity, and the like.
Description
Technical field
The present invention relates to a kind of concrete thickening agent, specifically a kind of lightweight aggregate concrete thickening agent, belong to concrete thickening agent field.
Background technology
Light aggregate concrete is a type of lightweight concrete, is with cement, light coarse aggregate and light fine aggregate（Or normal sands）A kind of lightweight concrete being formulated with water, the strength grade of light aggregate concrete is LC5.0～LC60, density rating is between 600～1900 grades, dry density is about lighter by 25%～35% than normal concrete, greatly reduce the deadweight of building, for normal concrete building, light aggregate concrete building has the advantages that from heavy and light, structural span is big, anti-seismic performance is good, save cost.Because its own lightweight, it is high-strength, insulation, it is heat-insulated, sound insulation, sound-absorbing the advantages of, lightweight aggregate concrete is also increasingly paid attention to, particularly " building energy conservation " as China a fundamental state policy, after country has assigned the order of national " stopping using clay brick in 170 cities " again recently, lightweight aggregate concrete obtains widely application, is widely used in the insulation of the peripheral structure of building construction, heat-insulated；Internal indoor separation；The sound insulation of flooring；The sound-absorbing of metope and ceiling；The insulation of roofing and building structure position etc.；
The most prominent advantage of lightweight aggregate concrete is than high from heavy and light, strong matter, with excellent technical and economic performance, to be inexorable trend in being applied to structure, the ground such as Shanghai, Tianjin, Beijing, Sichuan in recent years, lightweight aggregate concrete is increasing with the application of civil buildings (especially in high building project) in industry, a large amount of engineering practices prove, achieve preferable technical economic benefit and social benefit using lightweight aggregate concrete.
For generally, the lightweight aggregate concrete of China is in research progressively systematization, especially application amount expanding day, the stage of the range of application expanding day in load-carrying members.
The content of the invention
The present invention devises a kind of lightweight aggregate concrete thickening agent, using the lightweight aggregate concrete mixture of the thickening agent have it is not stratified, do not isolate, not bleeding, the features such as cohesiveness, dispersion resistance, stability and good homogeneity.
Lightweight aggregate concrete thickening agent, is mainly made up of the raw material of following weight portion：
45 ~ 61 parts of acrylic acid；0.3 ~ 0.5 part of initiator；45 ~ 55 parts of ammonia；1 ~ 4 part of molecular weight regulator；33 ~ 50 parts of deionized water；0.1 ~ 0.3 part of cross-linking agent；4 ~ 7 parts of emulsifying agent S-80；41 ~ 47 parts of solvent naphtha；4 ~ 12 parts of cellulose ether；7 ~ 12 parts of sodium gluconate.
Wherein, the initiator is potassium peroxydisulfate；
The molecular weight regulator is lauryl mercaptan；
The cross-linking agent is N.N- methylene-bisacrylamides；
The solvent naphtha isIsoparM, i.e., synthesising different structure alkane solvents oil.
The synthetic method of the present invention is the reverse emulsion polymerization method that open source literature is adopted.
The present invention is to synthesize a kind of special thickening agent mother solution of lightweight aggregate concrete by reverse emulsion polymerization, and compounds the components such as cellulose ether, sodium gluconate and obtain lightweight aggregate concrete thickening agent.
It is an advantage of the current invention that：Have that liquidity value added is little, not stratified, do not isolate using the lightweight aggregate concrete mixture of the thickening agent, not bleeding, the features such as cohesiveness, stability and good homogeneity.
With reference to embodiment, the invention will be further described.
Specific embodiment
Hereinafter the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains the present invention, is not intended to limit the present invention.
Unless otherwise stated, the percent employed in the present invention is percetage by weight.
The preparation of ammonium acrylate monomer：
Embodiment 1
Synthesis of the lightweight aggregate concrete with thickening agent monomer：
45 parts of deionized water, 58 parts of acrylic acid are added in equipped with agitator, the 250ml four-hole bottles of thermometer, 48 parts of strong aqua ammonia is added dropwise over, neutralization reaction 2h usings method under room temperature：Obtain ammonium acrylate monomer.
The preparation of lightweight aggregate concrete thickening agent。
Embodiment 2
By the ammonium acrylate monomer for obtaining add byIsoparM 41 parts, in the oil phases of 7 parts of emulsifying agent S-80 composition, be added dropwise over 0.35 part of initiator, 3 parts of molecular weight regulator and be polymerized at 55 DEG C 1.5h, obtain concentration for 25% lightweight aggregate concrete thickening agent mother solution.10 parts of cellulose ethers, 8 parts of sodium gluconate are added in the thickening agent mother solution for obtaining, and is allowed to dissolve, that is, obtain lightweight aggregate concrete thickening agent.
Embodiment 3
Product of the present invention is liquid, and during use, the volume of general additive is 0.07% ~ 0.2%.
LC7.5 haydite concrete Application Examples are given below.Match ratio is as follows：
Ensure identical water consumption, below the situation of change of each performance parameter of concrete to be not added with and adding after thickening agent of the present invention.
The situation of change of each performance parameter of concrete
| Performance parameter | Before incorporation | After incorporation |
| Concrete slump/mm | 185 | 190 |
| 1h slump-loss value/mm | 40 | 20 |
| Slurry viscosity coefficient/Pa.s | 0.156 | 0.298 |
| 10S pressured bleedings/% | 32% | 21% |
| Coursing degree of mortar/mm | 30 | 10 |
| Mortar water retention/% | 88% | 93% |
It is raw materials used in the present invention to be conventional raw material in the production of this area, can obtain from market, and for production result will not produce impact；The operation of the various equipment employed in the present invention, the conventional equipment being used in the production technology of this area, and each equipment, parameter etc. are carried out according to routine operation, have no special feature.
Claims (5)
1. lightweight aggregate concrete thickening agent, it is characterised in that be made up of the raw material of following weight portion：45 ~ 61 parts of acrylic acid；0.3 ~ 0.5 part of initiator；45 ~ 55 parts of ammonia；1 ~ 4 part of molecular weight regulator；33 ~ 50 parts of deionized water；0.1 ~ 0.3 part of cross-linking agent；4 ~ 7 parts of emulsifying agent S-80；41 ~ 47 parts of solvent naphtha；4 ~ 12 parts of cellulose ether；7 ~ 12 parts of sodium gluconate.
2. lightweight aggregate concrete thickening agent according to claim 1, it is characterised in that：The initiator is potassium peroxydisulfate.
3. lightweight aggregate concrete thickening agent according to claim 1, it is characterised in that：The molecular weight regulator is lauryl mercaptan.
4. lightweight aggregate concrete thickening agent according to claim 1, it is characterised in that：The cross-linking agent is N.N- methylene-bisacrylamides.
5. lightweight aggregate concrete thickening agent according to claim 1, it is characterised in that：The solvent naphtha isIsoparM, i.e., synthesising different structure alkane solvents oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510647739.6A CN106565129A (en) | 2015-10-09 | 2015-10-09 | Thickening agent for lightweight aggregate concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510647739.6A CN106565129A (en) | 2015-10-09 | 2015-10-09 | Thickening agent for lightweight aggregate concrete |
Publications (1)
| Publication Number | Publication Date |
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| CN106565129A true CN106565129A (en) | 2017-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510647739.6A Pending CN106565129A (en) | 2015-10-09 | 2015-10-09 | Thickening agent for lightweight aggregate concrete |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265674A (en) * | 1978-08-12 | 1981-05-05 | Hoechst Aktiengesellschaft | Additive for concrete or mortar and the use thereof |
| CN102531458A (en) * | 2010-12-09 | 2012-07-04 | 苏笮斌 | Anti-crack and anti-corrosion plasticizer composition and preparation method thereof |
| CN102892823A (en) * | 2010-04-14 | 2013-01-23 | 路博润高级材料公司 | Thickened amino acid surfactant compositions and methods therefor |
| CN103068865A (en) * | 2010-07-09 | 2013-04-24 | 路博润高级材料公司 | Structured acrylate copolymer thickeners |
| CN103936913A (en) * | 2014-03-14 | 2014-07-23 | 中交四航工程研究院有限公司 | Thickener used for self-compact concrete, preparation method thereof, and self-compact concrete using thickener |
| 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 |
| CN104591587A (en) * | 2014-12-30 | 2015-05-06 | 中国科学院武汉岩土力学研究所 | Additive for spraying plastering mortar |
-
2015
- 2015-10-09 CN CN201510647739.6A patent/CN106565129A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4265674A (en) * | 1978-08-12 | 1981-05-05 | Hoechst Aktiengesellschaft | Additive for concrete or mortar and the use thereof |
| CN102892823A (en) * | 2010-04-14 | 2013-01-23 | 路博润高级材料公司 | Thickened amino acid surfactant compositions and methods therefor |
| CN103068865A (en) * | 2010-07-09 | 2013-04-24 | 路博润高级材料公司 | Structured acrylate copolymer thickeners |
| CN102531458A (en) * | 2010-12-09 | 2012-07-04 | 苏笮斌 | Anti-crack and anti-corrosion plasticizer composition and preparation method thereof |
| CN103936913A (en) * | 2014-03-14 | 2014-07-23 | 中交四航工程研究院有限公司 | Thickener used for self-compact concrete, preparation method thereof, and self-compact concrete using thickener |
| 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 |
| CN104591587A (en) * | 2014-12-30 | 2015-05-06 | 中国科学院武汉岩土力学研究所 | Additive for spraying plastering mortar |
Non-Patent Citations (1)
| Title |
|---|
| 黄玉媛等: "《轻化工助剂配方》", 31 August 2008 * |
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Application publication date: 20170419 |
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