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Preparation method of high performance concrete curing agent

A high-performance concrete and curing agent technology, applied in the field of concrete, can solve the problems that restrict the popularization and use of film-forming curing agents, and achieve the effects of inhibiting water evaporation, stable performance, and simple preparation process

Inactive Publication Date: 2010-09-22
JIANGSU SUBOTE MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic curing agent products are difficult to meet such conditions, which seriously restricts the popularization and use of film-forming curing agents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] At 60°C, 100g of acetone, 30g of styrene, 20g of methyl methacrylate, and 0.1g of azobisisobutylcyanide were uniformly stirred together, reacted for 5 hours, and cooled to discharge. According to the building material industry standard (JC-901-2002), the water retention rate on the concrete surface is tested, and the result shows that it can reach 70%.

Embodiment 2

[0016] At 75°C, 100g of toluene, 20g of styrene, 20g of methyl methacrylate, 10g of butyl methacrylate, and 0.12g of azobisisoheptylcyanide were uniformly stirred together, reacted for 3 hours, and cooled to discharge. According to the building material industry standard (JC-901-2002), the water retention rate on the concrete surface is tested, and the result shows that it can reach 85%.

Embodiment 3

[0018] At 90°C, 100g of o-xylene, 20g of styrene, 10g of methyl methacrylate, 5g of lauryl methacrylate, and 0.35g of benzoyl peroxide were uniformly stirred together, reacted for 5 hours, and cooled to discharge . According to the building material industry standard (JC-901-2002), the water retention rate on the concrete surface is tested, and the result shows that it can reach 88%.

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PUM

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Abstract

The invention discloses a preparation method of high performance concrete curing agent. The method is characterized in that the curing agent is formed by polymerizing the free radical of monomer containing unsaturated double bond through free radical evocating agent at 60 to 90 degrees centigrade in organic solvent system, the content of the organic solvent in a reaction system is 50 percent to 90 wt percent, the sum of the content of the monomer containing the unsaturated double bond and the free radical evocating agent is 10 to 50 wt percent in the reaction system and the free radical evocating agent accounts for 0.2 percent to 2wt percent of the content of the unsaturated double bond monomer. Polymer solution prepared through the invention can form a compact film on the surface of the concrete and effectively restrain the moisture evaporation of the surface of the concrete. The suppression efficiency can reach 95 percent. The invention has the advantages of simple preparation technology, stable performance, convenient field use and the like and has great significance on preparing the high performance concrete.

Description

technical field [0001] The invention relates to the field of concrete, in particular to a method for preparing a high-performance concrete curing agent through radical solution polymerization. Background technique [0002] Concrete curing is an important part of concrete construction. Proper curing can greatly improve the durability, strength, wear resistance, volume stability, freeze-thaw resistance and other properties of concrete. The current concrete curing methods mainly include spraying and watering curing, wet covering curing (burlap, cotton mat, blanket, etc.), plastic film curing and film-forming curing agent curing. However, the most effective method of concrete curing is to use wet covering curing and water spray curing. The main reason is that the curing of film-forming curing agent cannot meet the actual needs. The curing agent needs to keep the relative humidity of the concrete surface at 80% within 7 days. above. According to the building materials industry ...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/14C08F2/06C08F220/18C08F220/22C04B40/04
Inventor 缪昌文李磊刘加平田倩冉千平王育江
Owner JIANGSU SUBOTE MATERIAL
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