A protective cement concrete curing agent and its preparation method and application

A technology of cement concrete and curing agent, which is applied in the field of chemical building materials to achieve the effects of reducing carbonization, improving water retention rate and protection effect, and reducing transmittance

Active Publication Date: 2019-12-27
JIANGSU SOBUTE NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems caused by the emulsifier in the above-mentioned cement concrete curing agent, the present invention provides a protective cement concrete curing agent without using an emulsifier and a preparation method thereof

Method used

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  • A protective cement concrete curing agent and its preparation method and application
  • A protective cement concrete curing agent and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Raw material ratio: 0.1g sulfonated graphene, 2g butyl acrylate, 1g hydroxyethyl methacrylate, 5g styrene, 0.04g ammonium persulfate and appropriate amount of water.

[0029] Prepare the mixed liquid of ammonium persulfate aqueous solution and three monomers of butyl acrylate, styrene and hydroxypropyl methacrylate. Under stirring conditions, raise the temperature of the sulfonated graphene and the remaining water to 75°C, and drop the ammonium persulfate aqueous solution and the mixture of the three monomers at the same time; control the dropping speed so that the two are added at the same time. , the temperature of the reaction liquid was raised to 85° C. and continued to keep warm and stirred for 2 hours, cooled, and discharged to obtain protective curing agent 1.

[0030] According to the building material industry standard (JC 901-2002) and the construction industry standard (JG 335-2011), the water retention rate of curing agent 1 is 92%, and the carbonization dep...

Embodiment 2

[0036] Raw material ratio: 0.27g sulfonated graphene, 20g butyl acrylate, 2g hydroxyethyl methacrylate, 5g styrene, 0.135g ammonium persulfate and appropriate amount of water.

[0037] Prepare the mixed liquid of ammonium persulfate aqueous solution and three monomers of butyl acrylate, styrene and hydroxypropyl methacrylate. Under stirring conditions, raise the temperature of the sulfonated graphene and the remaining water to 80°C, and drop the ammonium persulfate aqueous solution and the mixture of the three monomers at the same time; , the temperature of the reaction solution was raised to 90° C. and continued to heat and stir for 4 hours, cooled, and discharged to obtain protective curing agent 2.

[0038] According to the building material industry standard (JC 901-2002) and the construction industry standard (JG 335-2011), the water retention rate of curing agent 1 is 89%, and the carbonization depth ratio is 18%.

[0039] As a comparison, the ratio of raw materials in ...

Embodiment 3

[0042]Raw material ratio: 0.2g sulfonated graphene, 2g butyl acrylate, 0.5g hydroxyethyl methacrylate, 2g styrene, 0.0225g ammonium persulfate and appropriate amount of water.

[0043] Prepare the mixed liquid of ammonium persulfate aqueous solution and three monomers of butyl acrylate, styrene and hydroxypropyl methacrylate. Under stirring conditions, raise the temperature of the sulfonated graphene and the remaining water to 70°C, and drop the ammonium persulfate aqueous solution and the mixture of the three monomers at the same time; , the temperature of the reaction solution was raised to 80° C. and continued to keep warm and stirred for 4 hours, cooled, and discharged to obtain protective curing agent 3.

[0044] According to the building material industry standard (JC 901-2002) and the construction engineering industry standard (JG 335-2011), the water retention rate of curing agent 1 is 85%, and the carbonization depth ratio is 25%.

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Abstract

The invention discloses a protective cement concrete curing agent. The protective cement concrete curing agent is an emulsifier-free protective cement concrete curing agent prepared through aqueous polymerization of butyl acrylate, styrene and hydroxypropyl methacrylate and has an effective solid content of 5 to 25%. In virtue of the high-barrier property of graphene, the curing agent is further improved in the compactness and barrier effect on moisture and carbon dioxide after film formation, and the water-retention rate, carbonization resistance and other performance of the curing agent are improved; and the protective cement concrete curing agent can function both as a cement concrete curing agent and a protective paint, so protection and curing of cement concrete are integrated.

Description

technical field [0001] The invention relates to a protective cement concrete curing agent, which belongs to the field of chemical building materials. [0002] technical background [0003] Cement concrete is the most widely used composite material in the world and is widely used in various projects. Curing is an important part of concrete construction. After concrete is poured, it must be cured during the setting and hardening process so that it has enough water to ensure the hydration reaction. Proper curing can greatly improve the durability, strength, and durability of concrete. Abrasiveness, volume stability and other properties. [0004] Traditional maintenance methods include grass bag maintenance, plastic film maintenance and watering maintenance, etc. These methods are time-consuming, labor-intensive and seriously waste water resources. The method of curing concrete with a film-forming curing agent has a long history. The curing agent forms a dense isolation layer o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B40/04C08F212/08C08F220/18C08F220/28C08F2/38
CPCC04B40/04C08F2/38C08F212/08C08F220/18C08F220/1804C08F220/281
Inventor 王瑞蒋永菁李磊韩旭
Owner JIANGSU SOBUTE NEW MATERIALS
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