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Chlorine-free high-strength concrete accelerator and preparation method thereof

A technology of high-strength concrete and quick-setting agent, applied in the field of quick-setting agent, can solve the problems of concrete erosion and unfavorable long-term use of concrete, and achieve the effects of avoiding erosion, enhancing solidification effect and improving viscosity.

Inactive Publication Date: 2020-04-14
安徽皖科新科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the quick-setting agent soybeans currently on the market contain chloride ions, and the addition of chloride ions will cause a certain degree of erosion to concrete, which is not conducive to the long-term use of concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of chlorine-free high-strength concrete quick-setting agent, its preparation method comprises the following steps:

[0025] Step S1: In parts by weight, dry and pulverize 100-120 parts of bauxite to a powder with a particle size of 80-100 μm, and mix with 40-60 parts of quicklime, 20-40 parts of soda ash and 5-10 parts of melamine The superplasticizer is mixed evenly under stirring;

[0026] Step S2: In parts by weight, add the mixed powder obtained in step S1 to 200-400 parts of water, add 10-20 parts of cellulose, stir evenly for 1-2 hours, and finally obtain the quick-setting agent.

Embodiment 2

[0028] A kind of chlorine-free high-strength concrete quick-setting agent, its preparation method comprises the following steps:

[0029] Step S1: In parts by weight, dry 100 parts of bauxite and pulverize it to a powder with a particle size of 80 μm, and mix it with 408 parts of quicklime, 208 parts of soda ash and 58 parts of melamine-based water reducer under stirring;

[0030] Step S2: In parts by weight, add the mixed powder obtained in step S1 to 2008 parts of water, add 108 parts of cellulose, and stir evenly for 1 hour to finally obtain the quick-setting agent.

Embodiment 3

[0032] A kind of chlorine-free high-strength concrete quick-setting agent, its preparation method comprises the following steps:

[0033] Step S1: in parts by weight, dry 110 parts of bauxite and pulverize it to a powder with a particle size of 90 μm, and mix it with 50 parts of quicklime, 30 parts of soda ash and 8 parts of melamine-based water-reducer under stirring;

[0034] Step S2: In parts by weight, add the mixed powder obtained in step S1 to 300 parts of water, add 15 parts of cellulose, and stir evenly for 1.5 hours to finally obtain the quick-setting agent.

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PUM

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Abstract

The invention relates to a chlorine-free high-strength concrete accelerator and a preparation method thereof, wherein the chlorine-free high-strength concrete accelerator comprises, by weight, 100-120parts of bauxite, 40-60 parts of quick lime, 20-40 parts of sodium carbonate, 10-20 parts of cellulose, 5-10 parts of a melamine water reducing agent and 200-400 parts of water. According to the invention, the water reducing agent is added into the accelerator, and the accelerator is added into concrete, so that water in the concrete can be effectively removed while the accelerator plays a role in accelerating the concrete so as to further enhance the solidification effect of the concrete.

Description

technical field [0001] The invention belongs to the technical field of quick-setting agents, and in particular relates to a chlorine-free high-strength concrete quick-setting agent and a preparation method thereof. Background technique [0002] Concrete quick-setting agent is a gray powder product prepared by modifying various components such as aluminum oxide, soda ash, and thickener. It has quick-setting, fast-hardening and enhanced water-reducing effects on cement. The cement mortar mixed with an appropriate amount of this product can quickly set and harden, has high early strength, and can maintain other properties of cement. It is an ideal concrete and mortar project in my country. . [0003] However, the quick-setting agent soybean currently on the market contains chloride ions, and the addition of chloride ions will cause a certain degree of erosion of concrete, which is not conducive to the long-term use of concrete. In addition, the quick-setting effect of the acce...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B103/12
CPCC04B40/0039C04B2103/12C04B22/06C04B22/064C04B22/10C04B24/128C04B24/383
Inventor 李淳
Owner 安徽皖科新科技发展有限公司
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