Water reducing agent for high-strength concrete and preparation method thereof

A high-strength concrete and water-reducing agent technology, which is applied in the field of concrete admixtures, can solve problems such as high viscosity of concrete, poor volume stability, and complex manufacturing process, and achieve good corrosion resistance, good compatibility, and less dosage.

Inactive Publication Date: 2020-09-11
BOZHOU WOYE INTPROP SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of complex production process and high cost of high-performance water-reducing agent in the prior art, and cannot solve the problems of high viscosity of concrete and poor volume stability, etc., and propose a water-reducing agent for high-strength concrete and its preparation method

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  • Water reducing agent for high-strength concrete and preparation method thereof
  • Water reducing agent for high-strength concrete and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] A water-reducing agent for high-strength concrete proposed by the present invention includes the following raw materials in parts by weight: 20 parts of acrylic acid, 2 parts of chain transfer agent, 1 part of ammonium persulfate, 20 parts of methoxypolyethylene glycol, polyethylene glycol 15 parts of ether, 1 part of 1,3-dimethylimidazole methyl sulfate, 2 parts of sucrose fatty acid ester, 8 parts of carbon fiber powder, 2 parts of defoamer, 10 parts of sodium hydroxide;

[0024] Wherein, the mass ratio of 1,3-dimethylimidazole methyl sulfate to sucrose fatty acid ester is 1:2;

[0025] Among them, the chain transfer agent is prepared from 2,3-dimethylbutadiene, glycosaminoglycan, tetrahydrofuran, cyclohexane, ethanol and citric acid with a mass ratio of 1:2.5:1:1:4:1.2 ; The preparation method is: according to the mass ratio, mix tetrahydrofuran and cyclohexane to obtain a mixed solution, add 2,3-dimethylbutadiene and glycosaminoglycans to the mixed solution in turn ...

Embodiment 2

[0032] A water-reducing agent for high-strength concrete proposed by the present invention comprises the following raw materials in parts by weight: 30 parts of acrylic acid, 3.5 parts of chain transfer agent, 2 parts of ammonium persulfate, 25 parts of methoxypolyethylene glycol, polyethylene glycol 20 parts of ether, 1.5 parts of 1,3-dimethylimidazole methyl sulfate, 4.5 parts of sucrose fatty acid ester, 12 parts of carbon fiber powder, 3.5 parts of defoamer, 14 parts of sodium hydroxide;

[0033] Wherein, the mass ratio of 1,3-dimethylimidazole methyl sulfate to sucrose fatty acid ester is 1:3;

[0034]Among them, the chain transfer agent is prepared from 2,3-dimethylbutadiene, glycosaminoglycan, tetrahydrofuran, cyclohexane, ethanol and citric acid with a mass ratio of 1:4:2:3:6:1.6 ; The preparation method is: according to the mass ratio, mix tetrahydrofuran and cyclohexane to obtain a mixed solution, add 2,3-dimethylbutadiene and glycosaminoglycans to the mixed solution...

Embodiment 3

[0041] A water-reducing agent for high-strength concrete proposed by the present invention comprises the following raw materials in parts by weight: 40 parts of acrylic acid, 5 parts of chain transfer agent, 3 parts of ammonium persulfate, 30 parts of methoxypolyethylene glycol, polyethylene glycol 25 parts of ether, 2 parts of 1,3-dimethylimidazole methyl sulfate, 8 parts of sucrose fatty acid ester, 15 parts of carbon fiber powder, 5 parts of defoamer, 18 parts of sodium hydroxide;

[0042] Wherein, the mass ratio of 1,3-dimethylimidazole methyl sulfate to sucrose fatty acid ester is 1:4;

[0043] Among them, the chain transfer agent is prepared from 2,3-dimethylbutadiene, glycosaminoglycan, tetrahydrofuran, cyclohexane, ethanol and citric acid with a mass ratio of 1:5:3:5:8:2 ; The preparation method is: according to the mass ratio, mix tetrahydrofuran and cyclohexane to obtain a mixed solution, add 2,3-dimethylbutadiene and glycosaminoglycans to the mixed solution in turn ...

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Abstract

The invention belongs to the technical field of concrete admixtures, in particular to a high-strength concrete water reducer and a preparation method thereof. The problems of complex preparation process and high cost of the high-performance water reducing agent and high viscosity and poor volume stability of concrete in the prior art are solved; the water reducing agent for the high-strength concrete is prepared from the following raw materials: acrylic acid, a chain transfer agent, ammonium persulfate, methoxy polyethylene glycol, polyethylene glycol ether, 1,3-dimethylimidazole methyl sulfate, sucrose fatty acid ester, carbon fiber powder, a defoaming agent and sodium hydroxide. The water reducing agent prepared by the invention has high water reducing rate and good fluidity and permeability; the concrete admixture has the advantages of low consumption, obvious improvement of the dispersion effect of concrete particles, improvement of the bonding strength among the concrete particles, improvement of the mechanical properties and the mechanical properties of concrete, and good wear resistance and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a water reducer for high-strength concrete and a preparation method thereof. Background technique [0002] As one of the top ten new technologies promoted and applied by the Ministry of Construction, high-strength and high-performance concrete is an inevitable trend in the development of construction projects. Developed countries have already begun research and application as early as the 1950s. In our country, it was first applied in sleepers and prestressed bridges in the early 1980s. The application of high-rise buildings began in the late 1980s. Since the 1990s, research and application have increased. Many large and medium-sized cities such as Beijing, Shanghai, Guangzhou, and Shenzhen have built many high-strength and high-performance concrete buildings. With the development of the national economy, high-strength and high-performance concrete will be more and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C04B24/42C08F283/06C08F220/06C08F2/38C04B103/30C04B103/50
CPCC04B24/2647C04B40/0039C04B2103/302C04B2103/50C08F283/06C08F220/06C08F2/38C04B14/386C04B22/062C04B24/42C04B22/06C04B24/02
Inventor 陈兴涛贺焕聪李庆
Owner BOZHOU WOYE INTPROP SERVICE CO LTD
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