Concrete curing agent

A technology of concrete curing agent and mixture, applied in the field of water-based concrete curing agent, can solve problems such as low water retention rate, and achieve the effects of improving water retention rate, wide application range and improving performance

Inactive Publication Date: 2018-04-03
安徽金兄弟环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has many advantages such as low cost, convenient use, green environmental protection, easy removal, beautiful appearance, etc., but its water retention rate has always been relatively low, and the 72-hour water retention rate is generally below 60%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 1.5g sodium dodecylbenzenesulfonate to 50g deionized water, stir at a speed of 300r / min to form an emulsion, then slowly add 90g styrene, 30g methyl methacrylate and 5g divinyl to the emulsion Benzene, stirred at a speed of 300r / min for 30min and then used as the first mixture for later use; 1.5g sodium dodecylbenzenesulfonate was added to 50g deionized water, stirred at a speed of 300r / min to form an emulsion, and then poured into the emulsion Slowly add 70g of methyl acrylate and 50g of styrene, stir at a speed of 300r / min for 30min and use it as the second mixture for later use; add 100g of water, 0.5g of sodium dodecylbenzenesulfonate and 3g of the first After the mixture is heated to 70°C, add the remaining first mixture and 50ml of potassium persulfate with a concentration of 0.1g / mL, and then add the second mixture and 50ml of potassium persulfate with a concentration of 0.1g / mL dropwise after the addition is complete. After another 1 hour of reaction, the ma...

Embodiment 2

[0034] Add 1.5g sodium dodecylbenzenesulfonate to 50g deionized water, stir at a speed of 350r / min to form an emulsion, then slowly add 40g styrene, 30g ethyl methacrylate and 5g methacrylic acid to the emulsion Hydroxypropyl ester was used as the first mixture after stirring at a speed of 350r / min for 30min; 1.5g sodium dodecylbenzenesulfonate was added to 50g deionized water, stirred at a speed of 350r / min to form an emulsion, and then added to the Slowly add 50g of ethyl acrylate and 80g of styrene to the emulsion, stir at a speed of 350r / min for 30min and use it as the second mixture for later use; add 100g of water, 0.5g of sodium dodecylbenzenesulfonate and 5g of For the first mixture, after heating up to 70°C, add the remaining first mixture and 50ml of potassium persulfate with a concentration of 0.1g / mL, and then add the second mixture and 50ml of potassium persulfate with a concentration of 0.1g / mL dropwise. After the addition is complete, react for 2 hours to cool a...

Embodiment 3

[0037] Add 1.5g sodium lauryl sulfate to 50g deionized water, stir at a speed of 300r / min to form an emulsion, then slowly add 70g styrene, 30g butyl methacrylate and 5g hydroxypropyl methacrylate to the emulsion Esters, stirred at a speed of 300r / min for 30min and then used as the first mixture for later use; 1.5g of sodium lauryl sulfate was added to 50g of deionized water, stirred at a speed of 300r / min to form an emulsion, and then slowly added to the emulsion 30g of butyl acrylate and 100g of styrene were stirred at a speed of 300r / min for 30min and then used as the second mixture for subsequent use; in a three-necked flask, 100g of water, 0.5g of sodium lauryl sulfate and 2g of the first mixture were added, and the temperature was raised to After 80°C, add the remaining first mixture and 50ml of ammonium persulfate with a concentration of 0.1g / mL, then add the second mixture and 50ml of ammonium persulfate with a concentration of 0.1g / mL dropwise, and react for 1 hour aft...

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PUM

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Abstract

The present invention relates to a concrete curing agent, which comprises: 90-96 parts of polymer emulsion, 1-5 parts of film-forming aid, 1-2 parts of defoamer, 1-5 parts of leveling agent, the number of parts is parts by weight; the polymer emulsion is polymerized from core monomers and shell monomers, wherein the core monomers are selected from styrene, methyl methacrylate, ethyl methacrylate, butyl methacrylate, methyl acrylate A mixture of any two of acrylate, ethyl acrylate or butyl acrylate; the shell monomer is selected from styrene, methyl methacrylate, ethyl methacrylate, butyl methacrylate, methyl acrylate, ethyl acrylate Or a mixture of any two of butyl acrylate. The concrete curing agent of the invention has high water retention capacity, is low in cost, and is environmentally friendly, and is suitable for large-area concrete in areas such as drought, anhydrous, and hot areas, or concrete that is difficult to maintain by traditional methods.

Description

technical field [0001] The invention relates to a water-based concrete curing agent, which belongs to the field of concrete admixtures in building materials. Background technique [0002] The durability of concrete and the cracking of concrete have been extensively studied at home and abroad. Among them, the drying shrinkage cracking caused by improper early curing of concrete and the compactness of concrete structure caused by insufficient hydration reaction cannot meet the design requirements are two important factors. If the concrete is not cured enough, the hydration of the cement will stop with the evaporation of water, causing the concrete to shrink and crack and the structure will be loose, thus affecting the strength and durability of the concrete. Therefore, curing is of great significance for realizing the design performance of concrete and improving the durability of concrete. [0003] Traditional concrete curing methods include natural curing, atmospheric steam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B40/04
CPCC04B40/04
Inventor 马安岭
Owner 安徽金兄弟环保科技股份有限公司
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