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Concrete reinforcing agent and preparation method thereof

A concrete reinforcement and raw material technology, applied in the field of concrete admixtures, can solve the problems of low water reducing rate and low mud content sensitivity, achieve compact and uniform hydration, improve mud content sensitivity, and accelerate the hydration process Effect

Active Publication Date: 2016-03-02
浙江宏鑫染化材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a concrete reinforcing agent and a preparation method for the above-mentioned deficiencies in the prior art. Affect the performance of concrete; and it also has water-reducing properties, which can make up for the problem of low water-reducing rate of existing water-reducing agents

Method used

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  • Concrete reinforcing agent and preparation method thereof
  • Concrete reinforcing agent and preparation method thereof
  • Concrete reinforcing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Add 6 parts of tap water into the enamel reaction kettle, dissolve 3 parts of sodium metabisulfite in water, add 12 parts of liquid caustic soda, heat to 80°C for reaction, stir for 2 hours, then add 8 parts of hydrophilic fumed silica and 21 1 part of ethylene glycol, lower the temperature to 30°C, and react to obtain an intermediate; mix 12 parts of isopropanol, 3 parts of sodium hexametaphosphate, and 3 parts of triethanolamine with the intermediate to obtain a concrete reinforcing agent.

[0038] The water reducing rate is calculated as follows: when the concrete slump is basically the same, the ratio of the unit water consumption difference between the concrete without water reducing agent and the tested concrete with water reducing agent to the unit water consumption of concrete without water reducing agent.

[0039]The concrete reinforcing agent has a pH value of 7.43, a solid content of 5.56%, and a water reduction rate of 9. Above-mentioned concrete reinforcing...

Embodiment 2

[0045] Add 9 parts of tap water into the enamel reaction kettle, dissolve 4 parts of sodium metabisulfite in water, add 10 parts of liquid caustic soda, heat to 85°C for reaction, stir for 2.5 hours, then add 9 parts of hydrophilic fumed silica and 22 1 part of ethylene glycol, lower the temperature to 30°C, and react to obtain an intermediate; mix 12 parts of isopropanol, 4 parts of sodium hexametaphosphate, and 3 parts of triethanolamine with the intermediate to obtain a concrete reinforcing agent.

[0046] The concrete reinforcing agent has a pH value of 7.51, a solid content of 5.64%, and a water reduction rate of 9. Above-mentioned concrete reinforcing agent is mixed with cement, mineral powder, fly ash, yellow sand, naphthalene series admixture, water and stone, and the mass ratio during mixing is as shown in the following table 3 (with the concrete reinforcing agent of the present invention not added Product as reference sample), by testing the performance and strength ...

Embodiment 3

[0053] Add 10 parts of tap water into the enamel reaction kettle, dissolve 4 parts of sodium metabisulfite in water, add 13 parts of liquid caustic soda, heat to 80°C for reaction, stir for 2 hours, then add 10 parts of hydrophilic fumed silica and 20 1 part of ethylene glycol, lower the temperature to 35°C, and react to obtain an intermediate; mix 12 parts of isopropanol, 4 parts of sodium hexametaphosphate, and 3 parts of triethanolamine with the intermediate to obtain a concrete reinforcing agent.

[0054] The concrete reinforcing agent has a pH value of 7.53, a solid content of 5.72%, and a water reduction rate of 18. Above-mentioned concrete reinforcing agent is mixed with cement, mineral powder, fly ash, yellow sand, naphthalene series additive, water and stone, and the mass ratio during mixing is as shown in table 5 below (in the form of not adding concrete reinforcing agent of the present invention Product as contrast sample), by testing the performance and strength of...

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Abstract

The invention discloses a concrete enhancer and a preparation method thereof. The concrete enhancer comprises the following raw materials in parts by weight: 10-30 parts of ethylene glycol, 8-20 parts of isopropanol, 1-10 parts of sodium metabisulfite, 2-8 parts of sodium hexametaphosphate, 6-15 parts of liquid caustic soda, 4-15 parts of hydrophilic vapor-phase silica white and 2-10 parts of triethanolamine. The enhancer has low sensitivity for silt content in machine-made sand, and can not obviously influence the concrete performance due to increase of the silt content. The concrete enhancer has water reducing property, and can solve the problem of low water reducing rate in the existing water reducing agent.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a concrete reinforcing agent and a preparation method. Background technique [0002] Concrete is the most widely used and most used building material in civil engineering. It is composed of cementitious materials (cement, fly ash, mineral powder, etc.), orthopedics (including sand, stone, etc.) agent, etc.) is a composite material system made by simple mechanical mixing. Concrete is also a complex multiphase composite material system. The interface transition zone between different phases is the most important factor affecting the comprehensive performance of concrete. Many quality problems of concrete are ultimately caused by defects in the interface transition zone. With the advancement of science and technology, the use of concrete admixtures and concrete reinforcing agents has significantly improved the performance of concrete, but at the same time it has also br...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/12C04B22/16C04B22/06C04B22/14
Inventor 阮高良谢唯敏
Owner 浙江宏鑫染化材料有限公司