Preparation method of composite concrete curing agent

A concrete curing agent and composite technology, which is applied in the field of concrete curing agent, can solve the problems of low water retention rate and the like, and achieve the effects of strong permeability, good water retention rate and improved curing effect.

Inactive Publication Date: 2019-05-10
赵兴华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Technical problem to be solved by the present invention: Aiming at the problem of low water retention rate of existing concrete curing agents, a preparation method of composite concrete curing agents is provided

Method used

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  • Preparation method of composite concrete curing agent

Examples

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example 1

[0032] Take the composite emulsion, the mass fraction is 5% urea solution, water glass, and sodium methyl siliconate, mix and stir the composite emulsion, the mass fraction is 5% urea solution, water glass, and sodium methyl siliconate to obtain the composite type Concrete curing agent. Composite emulsion preparation steps are: get carboxymethyl cellulose, acrylic acid, styrene, ammonium persulfate, butyl acrylate, emulsifier, N, N-methylenebisacrylamide, deionized water; carboxymethyl cellulose Mix with deionized water, keep warm and stir to obtain a mixed solution; add ammonium persulfate to the mixed solution, and continue stirring for 5 minutes to obtain a reaction solution; add acrylic acid and N,N-methylenebisacrylamide to the reaction solution, and continue Stir for 1 hour to obtain a base liquid; add styrene, butyl acrylate and an emulsifier to the base liquid, perform constant temperature stirring treatment, and cool to room temperature to obtain a composite emulsion....

example 2

[0034] Take the composite emulsion, the mass fraction is 5% urea solution, water glass, and sodium methyl siliconate, mix and stir the composite emulsion, the mass fraction is 5% urea solution, water glass, and sodium methyl siliconate to obtain the composite type Concrete curing agent. Composite emulsion preparation steps are: get carboxymethyl cellulose, acrylic acid, styrene, ammonium persulfate, butyl acrylate, emulsifier, N, N-methylenebisacrylamide, deionized water; carboxymethyl cellulose Mix with deionized water, keep warm and stir to obtain a mixed solution; add ammonium persulfate to the mixed solution, and continue stirring for 8 minutes to obtain a reaction solution; add acrylic acid and N, N-methylenebisacrylamide to the reaction solution, and continue Stir for 1 hour to obtain a base liquid; add styrene, butyl acrylate and an emulsifier to the base liquid, perform constant temperature stirring treatment, and cool to room temperature to obtain a composite emulsion...

example 3

[0036] Take the composite emulsion, the mass fraction is 5% urea solution, water glass, and sodium methyl siliconate, mix and stir the composite emulsion, the mass fraction is 5% urea solution, water glass, and sodium methyl siliconate to obtain the composite type Concrete curing agent. Composite emulsion preparation steps are: get carboxymethyl cellulose, acrylic acid, styrene, ammonium persulfate, butyl acrylate, emulsifier, N, N-methylenebisacrylamide, deionized water; carboxymethyl cellulose Mix with deionized water, keep warm and stir to obtain a mixed solution; add ammonium persulfate to the mixed solution, and continue stirring for 10 minutes to obtain a reaction solution; add acrylic acid and N, N-methylenebisacrylamide to the reaction solution, and continue Stir for 2 hours to obtain a base liquid; add styrene, butyl acrylate and an emulsifier to the base liquid, perform constant temperature stirring treatment, and cool to room temperature to obtain a composite emulsi...

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Abstract

The invention relates to a preparation method of a composite concrete curing agent, and belongs to the technical field of concrete curing agents. A heterogeneous polymerization system is adopted, carboxymethyl cellulose is used as a matrix to graft acrylic acid monomers, a composite emulsion is prepared as a raw material of the composite concrete curing agent, water glass, urea and sodium methylsilicate are added, and the composite concrete curing agent with good water retention rate is prepared; the sodium methylsilicate has hydrophobicity, and evaporation of water can be stopped to a certainextent, and the water glass is easy to react with free calcium oxide in cement and calcium hydroxide as a cement hydration product to form calcium silicate crystals, so that loss of water is prevented; and the surface becomes compact by Si-O of the sodium methylsilicate, the urea plays a role of a penetrating agent in a curing agent, so that water glass can be promoted to penetrate into a concrete surface layer, capillaries of the concrete surface layer are blocked, a compact surface layer is formed, moisture drainage is stopped, and cement in the concrete is fully hydrated.

Description

technical field [0001] The invention relates to a preparation method of a composite concrete curing agent, belonging to the technical field of concrete curing agents. Background technique [0002] Cement concrete is the most widely used and used building material in the world today, and it can be seen almost everywhere. It has many advantages such as strong bearing capacity, good durability, and rich sources of materials. The performance of concrete is not only related to its constituent materials and good ratio, but also inseparable from good maintenance in the later stage. Concrete curing is a technical method to improve the degree of cement hydration by controlling the concrete temperature and moisture migration. More specifically, curing is to keep the concrete saturated or close to saturated water, so that the cement hydration products can be continuously filled in the fresh concrete Means of free water space. [0003] There are many ways to maintain concrete, but the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B40/04
Inventor 赵兴华
Owner 赵兴华
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