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Alkali-free chloride-free liquid concrete enhancer and preparation method thereof

A concrete reinforcing agent, liquid technology, applied in the field of cement additives, can solve the problems of concrete quality deterioration, concrete segregation, etc., to achieve the effect of improving quality and performance, improving bonding force, and increasing the strength of cement and concrete

Active Publication Date: 2014-05-28
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

[0020] The preparation method of the above-mentioned alkali-free and chlorine-free liquid concrete reinforcing agent is characterized in that: comprising the following steps:

[0021] 1) Take 30-60% of anhydrous aluminum sulfate, 5-20% of triethanolamine, 0.05-0.1% of stabilizer, 5-10% of aluminum hydroxide, 10-20% of hydrofluoric acid and 19-49% of water by weight percentage %,spare;

[0022] 2) Add anhydrous aluminum sulfate to water, stir to obtain aluminum sulfate solution, set aside;

[0023] 3) Put the hydrofluoric acid in a plastic container, then slowly add aluminum hydroxide, after the reaction is completed, collect the reacted aluminum fluoride solution for later use;

[0024] 4) Mix the aluminum sulfate solution obtained in step 2) with the aluminum fluoride solution obtained in step 3), then add triethanolamine and stir to mix, and finally add stabilizer slowly and stir until it becomes a uniform liquid, which is liquid concrete reinforcement agent.

Embodiment 1

[0027] An alkali-free and chlorine-free liquid concrete reinforcing agent, which is composed of the following raw materials in weight percentage: 45% anhydrous aluminum sulfate, 5% triethanolamine, 0.1% stabilizer, 5% aluminum hydroxide, 10% hydrofluoric acid and 34.9% water %. The stabilizer is acrylamide.

[0028] The preparation method of above-mentioned alkali-free and chlorine-free liquid concrete reinforcing agent comprises the following steps:

[0029] 1) Take 45% of anhydrous aluminum sulfate, 5% of triethanolamine, 0.1% of stabilizer, 5% of aluminum hydroxide, 10% of hydrofluoric acid and 34.9% of water by weight percentage, and reserve;

[0030] 2) Add anhydrous aluminum sulfate to water, stir to obtain aluminum sulfate solution, set aside;

[0031] 3) Put the hydrofluoric acid in a plastic container, then slowly add aluminum hydroxide, after the reaction is completed, collect the reacted aluminum fluoride solution for later use;

[0032] 4) Mix the aluminum s...

Embodiment 2

[0034] An alkali-free and chlorine-free liquid concrete reinforcing agent, which is composed of the following raw materials in weight percentage: 30% anhydrous aluminum sulfate, 20% triethanolamine, 0.05% stabilizer, 10% aluminum hydroxide, 20% hydrofluoric acid and 19.95% water %. The stabilizer is acrylamide.

[0035] The preparation method of above-mentioned alkali-free and chlorine-free liquid concrete reinforcing agent comprises the following steps:

[0036] 1) Take 30% of anhydrous aluminum sulfate, 20% of triethanolamine, 0.05% of stabilizer, 10% of aluminum hydroxide, 20% of hydrofluoric acid and 19.95% of water by weight percentage, and reserve;

[0037] 2) Add anhydrous aluminum sulfate to water, stir to obtain aluminum sulfate solution, set aside;

[0038] 3) Put the hydrofluoric acid in a plastic container, then slowly add aluminum hydroxide, after the reaction is completed, collect the reacted aluminum fluoride solution for later use;

[0039] 4) Mix th...

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Abstract

The invention relates to an alkali-free chloride-free liquid concrete enhancer and a preparation method thereof, wherein the enhancer mainly comprises the following materials according to weight percentages: 20-80% of anhydrous aluminum sulfate, 5-20% of triethanolamine, 0-0.2% of stabilizer, and 15-60% of water. The concrete enhancer is lower in cost, the preparation process is simple, the production of the ettringite in the early stage is increased when the concrete enhancer is added into a concrete mixture, so that more chemical bonds with stronger binding forces are produced among cement hydration particles, the Van der Waals' force is replaced the binding force of a cementing material is increased, the strength of the cement and concrete is reached, the quality and the property of the concrete material are improved, and the amount of consumed concrete cement is reduced.

Description

technical field [0001] The invention relates to the technical field of cement additives, in particular to an alkali-free and chlorine-free liquid concrete reinforcing agent 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 product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B24/26
Inventor 阳勇福林海燕王玉江王晓峰李建伟杨小林
Owner LUOYANG INST OF SCI & TECH
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