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Liquid alkali-free and chlorine-free accelerating agent for spraying concrete and preparation method of liquid alkali-free and chlorine-free accelerating agent

A technology of shotcrete and accelerator, applied in the field of concrete additives, can solve the problems of cumbersome production process, decrease in strength, falling off, etc., and achieve the effects of non-corrosiveness and irritating odor, good adaptability and stable state

Inactive Publication Date: 2017-11-17
CHONGQING SANSHENG IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, accelerators for shotcrete are mainly divided into two types: water agent and powder agent, wherein the water agent contains alkali accelerator and non-alkali accelerator, because there are a large amount of sodium ions in the alkali accelerator Alkali-aggregate reaction is prone to cause strength decline or even cracking and falling off in the later stage; so alkali-free liquid accelerator has become the best choice
However, the current non-alkali liquid accelerators have a cumbersome production process and high production costs, which greatly restricts the promotion of alkali-free liquid accelerators in engineering, and few businesses produce and sell such accelerators.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add water into the reaction kettle, set the speed of the mixer at 150r / min, and preheat to 80°C;

[0020] After the temperature reaches the set temperature, add 45% coagulation accelerating component, 25% stabilizing component, and 30% concrete reinforcing component weighed in advance into the reactor, and react for 1.5 hours;

[0021] The coagulant component is made of aluminum sulfate and aluminum fluoride in a mass ratio of 1:5; the stabilizing component is made of citric acid, urea, triisopropanolamine, glycine, lactic acid, and sucrose in a mass ratio of 2:3:5: 2:6:1 mixed preparation; the concrete reinforcement component is composed of magnesium sulfate, magnesium fluorosilicate, sodium silicate, calcium formate, calcium oxalate, calcium nitrate, and hydroxymethyl cellulose in a mass ratio of 10:10:1: 2:1.5:3:1 formulation;

[0022] After the reaction is finished, add the pH adjustment component dropwise to adjust the pH value to 2; the pH adjustment component is...

Embodiment 2

[0025] Add water into the reaction kettle, set the speed of the mixer at 150r / min, and preheat to 80°C;

[0026] After the temperature reaches the set temperature, add 50% coagulation accelerating component, 25% stabilizing component, and 25% concrete reinforcing component weighed in advance into the reactor, and react for 1.5 hours;

[0027] The coagulant component is made of aluminum sulfate and aluminum fluoride in a mass ratio of 1:5; the stabilizing component is made of citric acid, urea, triisopropanolamine, glycine, lactic acid, and sucrose in a mass ratio of 5:2:6: 3:1:5 mixed preparation; the concrete reinforcement component is composed of magnesium sulfate, magnesium fluorosilicate, sodium silicate, calcium formate, calcium oxalate, calcium nitrate, and hydroxymethyl cellulose in a mass ratio of 14:7:2: 1:2:1:2 formulation;

[0028] After the reaction is finished, add the pH adjustment component dropwise to adjust the pH value to 2; the pH adjustment component is pr...

Embodiment 3

[0031] Add water into the reaction kettle, set the speed of the mixer at 150r / min, and preheat to 80°C;

[0032] After the temperature reaches the set temperature, add 55% coagulation accelerating component, 25% stabilizing component, and 20% concrete reinforcing component weighed in advance into the reactor, and react for 1.5 hours;

[0033] The coagulant component is made of aluminum sulfate and aluminum fluoride in a mass ratio of 1:5; the stabilizing component is made of citric acid, urea, triisopropanolamine, glycine, lactic acid, and sucrose in a mass ratio of 3:5:1: 6:2:1 mixed preparation; the concrete reinforcement component is composed of magnesium sulfate, magnesium fluorosilicate, sodium silicate, calcium formate, calcium oxalate, calcium nitrate, and hydroxymethyl cellulose in a mass ratio of 12:8:2: 2:2:1:2 formulation;

[0034] After the reaction is finished, add the pH adjustment component dropwise to adjust the pH value to 2; the pH adjustment component is pr...

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PUM

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Abstract

The invention discloses a liquid alkali-free and chlorine-free accelerating agent for spraying concrete and a preparation method of the liquid alkali-free and chlorine-free accelerating agent. The liquid alkali-free and chlorine-free accelerating agent for spraying the concrete, provided by the invention, is prepared from an accelerating component, a stabilizing component, a concrete enhancing component and a pH adjusting component. The liquid alkali-free and chlorine-free accelerating agent provided by the invention has the advantages of no corrosivity and pungent smell, stable state and excellent adaptability. According to experimental conditions of JC-477-2005, the liquid alkali-free and chlorine-free accelerating agent provided by the invention is a qualified product when the parameter is 5 to 7 percent.

Description

technical field [0001] The invention relates to a concrete additive, in particular to a liquid alkali-free and chlorine-free accelerator for shotcrete and a preparation method thereof. Background technique [0002] In the prior art, accelerators for shotcrete are mainly divided into two types: water agent and powder agent, wherein the water agent contains alkali accelerator and non-alkali accelerator, because there are a large amount of sodium ions in the alkali accelerator Alkali-aggregate reaction is prone to cause strength decline or even cracking and falling off in the later stage; so alkali-free liquid accelerator has become the best choice. However, the current non-alkali liquid accelerators have a cumbersome production process and high production costs, which greatly restricts the promotion of alkali-free liquid accelerators in engineering, and few businesses produce and sell such accelerators. Common non-alkali liquid accelerators on the market generally use industr...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B103/12
CPCC04B40/0039C04B2103/12C04B22/148C04B22/126C04B24/06C04B24/126C04B24/122C04B24/123C04B24/10C04B22/142C04B12/04C04B24/04C04B22/085C04B24/383C04B22/165C04B22/141
Inventor 潘先文汪瑞悦姚彬
Owner CHONGQING SANSHENG IND CO LTD
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