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Liquid cement synergist and preparation method thereof

A cement synergist and liquid technology, applied in the field of cement additives, can solve the problems of concrete segregation, concrete quality deterioration, etc., and achieve the effects of improving cementing strength, improving quality and performance, and simple preparation process

Inactive Publication Date: 2014-05-07
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The incorporation of admixtures greatly improves the performance of concrete mixtures (fresh performance and long-term performance), but improper use of admixtures may lead to segregation of concrete
In addition, there are compatibility problems between different types of admixtures and different types of cement; random use of admixtures that do not follow the requirements will also lead to deterioration of concrete quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The preparation method of above-mentioned liquid cement synergist comprises the following steps:

[0018] 1) Take 40-70% of sodium thiosulfate, 0-40% of sodium aluminate, 5-20% of triethanolamine, 0-0.2% of stabilizer and 15-55% of water according to the percentage by weight, and set aside;

[0019] 2) Add sodium thiosulfate and sodium aluminate into water, stir to obtain solution A, and set aside;

[0020] 3) Add triethanolamine to solution A, stir and mix, then slowly add stabilizer, stir well to prepare liquid cement synergist.

Embodiment 1

[0023] A liquid cement synergist is composed of the following raw materials in weight percentage: 60% sodium thiosulfate, 10% sodium aluminate, 8.5% triethanolamine, 0.1% stabilizer and 21.4% water. The stabilizer is acrylamide.

[0024] The preparation method of above-mentioned liquid cement synergist comprises the following steps:

[0025] 1) Take 60% of sodium thiosulfate, 10% of sodium aluminate, 8.5% of triethanolamine, 0.1% of stabilizer and 21.4% of water by weight percentage, and reserve;

[0026] 2) Add sodium thiosulfate and sodium aluminate into water, stir to obtain solution A, and set aside;

[0027] 3) Add triethanolamine to solution A, stir and mix, then slowly add stabilizer, stir well to prepare liquid cement synergist.

Embodiment 2

[0029] A liquid cement synergist is composed of the following raw materials in weight percentage: 40% sodium thiosulfate, 13% triethanolamine, 0.05% stabilizer and 47% water. The stabilizer is a methacrylic acid copolymer.

[0030] The preparation method of above-mentioned liquid cement synergist comprises the following steps:

[0031] 1) Take 40% of sodium thiosulfate, 13% of triethanolamine, 0.05% of stabilizer and 47% of water by weight percentage, and set aside;

[0032] 2) Add sodium thiosulfate into water, stir to obtain solution A, and set aside;

[0033] 3) Add triethanolamine to solution A, stir and mix, then slowly add stabilizer, stir well to prepare liquid cement synergist.

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Abstract

The invention relates to a liquid cement synergist, which is prepared from the following raw materials by weight percent: 40-70% of sodium thiosulfate, 0-40% of sodium aluminate, 5-20% of triethanolamine, 0-0.2% of stabilizer and the balance of water. The liquid cement synergist disclosed by the invention is low in cost, and simple in preparation technology; when the liquid cement synergist is added to a concrete mixture, the production amount of early ettringite can be improved, more chemical bonds with stronger binding force are generated among cement hydration particles to replace Van der Waals force, the cementing force of the cementitious material is improved, the strength of the cement and the concrete is improved, the quality and the property of the concrete material are improved, and the consumption of the concrete cement is reduced.

Description

technical field [0001] The invention relates to the technical field of cement additives, in particular to a liquid cement synergist and a preparation method thereof. Background technique [0002] Selecting appropriate admixtures and admixtures is one of the ways to improve the strength of concrete. In the cement concrete industry, in order to coordinate with the industrial structure policy advocated by the state to vigorously develop the circular economy and accelerate the construction of a resource-saving and environment-friendly society. Mineral admixtures have been widely used in cement concrete. On the one hand, they are used to save resources and protect the environment. On the other hand, they are used to improve the chemical composition of cement substrates, reduce porosity, and improve the rheological and hardening properties of concrete. [0003] Most of the admixtures used in concrete are multi-functional products composed of water reducing agent and others suc...

Claims

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Application Information

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IPC IPC(8): C04B24/12C04B22/14
Inventor 林海燕阳勇福王玉江王晓峰李建伟杨小林
Owner LUOYANG INST OF SCI & TECH
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