Mud content inhibitor for concrete doped with polycarboxylic acid type water reducer and preparation method and application method of mud content inhibitor

A technology based on polycarboxylate and mud content, applied in the field of concrete additives, can solve the problems of long concrete setting time, high air content in concrete, and affecting the appearance of concrete products, etc., and achieve low production cost, simple production equipment and wide range of raw materials Effect

Active Publication Date: 2012-10-10
山东华伟银凯建材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the initial serious segregation of concrete by over-mixing is used to ensure the construction state after 0.5h or even 1h. The resulting high air content in the concrete also seriously affects the appearance and later strength of the concrete product, and may also cause problems such as excessively long setting time of the concrete.

Method used

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  • Mud content inhibitor for concrete doped with polycarboxylic acid type water reducer and preparation method and application method of mud content inhibitor

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The mud content inhibitor for concrete mixed with polycarboxylate water-reducing agent of the present invention is composed of 20% sodium hexametaphosphate, 5% cetyl ammonium bromide, 0.5% disodium edetate and Made of 74.5% water.

[0026] The preparation method comprises the following steps:

[0027] 1) First add measured water and sodium hexametaphosphate into the reactor, and stir for 10 minutes;

[0028] 2) Then add cetyl ammonium bromide and disodium ethylenediaminetetraacetate in proportion, and stir for 20 minutes to prepare the mud content inhibitor for concrete mixed with polycarboxylic acid-based water reducer.

[0029] The solid content of the prepared mud content inhibitor is 25.5%.

[0030] The method of use is as follows: the amount of mud content inhibitor is 5wt% of the amount of polycarboxylate water reducer concrete.

Embodiment 2

[0032] The mud content inhibitor for concrete mixed with polycarboxylic acid-based water reducer of the present invention is made of 25% sodium tripolyphosphate, 2% polyvinyl alcohol, 0.5% sodium citrate and 72.5% water by mass.

[0033] The preparation method comprises the following steps:

[0034] 1) First add measured water and sodium tripolyphosphate into the reactor, and stir for 5 minutes;

[0035] 2) Then add polyvinyl alcohol and sodium citrate in proportion, and stir for 25 minutes to prepare the mud content inhibitor for concrete mixed with polycarboxylate-based water reducer.

[0036] The solid content of the prepared mud content inhibitor was 27.5%.

[0037] When used, the amount of mud content inhibitor is 3wt% of the amount of polycarboxylate water reducer concrete.

Embodiment 3

[0039] The mud content inhibitor for concrete mixed with polycarboxylate water reducing agent of the present invention is composed of 30% sodium pyrophosphate, 0.5% N,N-dimethyl-1-hexadecyl ammonium, 1% ethyl Made with disodium diamine tetraacetate and 68.5 parts water.

[0040] The preparation method comprises the following steps:

[0041] 1) First add measured water and sodium pyrophosphate into the reactor, and stir for 7 minutes;

[0042] 2) Then add N, N-dimethyl-1-hexadecyl ammonium and disodium ethylenediamine tetraacetate in proportion, and stir for 27 minutes to prepare the concrete mixed with polycarboxylate-based water reducer to suppress the mud content. agent.

[0043] The solid content of the prepared mud content inhibitor is 31.5%.

[0044] The method of use is as follows: the amount of mud content inhibitor is 2wt% of the amount of polycarboxylate water reducer concrete.

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Abstract

The invention relates to the field of concrete additives and specifically relates to a mud content inhibitor for concrete doped with a polycarboxylic acid type water reducer and a preparation method and an application method of the mud content inhibitor. The mud content inhibitor is prepared by the following raw materials of, by weight, 20%-30% of mud dispersion components, 0.5%-5% of mud adsorption components, 0.5%-5% of ion complexation exchange components and the balance water. The preparation method includes firstly, uniformly stirring water and the mud dispersion components, and adding and uniformly stirring the mud adsorption components and the ion complexation exchange components. The application method includes that the usage amount of the mud content inhibitor is 2-5 wt. % of that of the polycarboxylic acid type water reducer. By means of the mud content inhibitor, the liquidity and the slump-retaining performance of the concrete can be increased, the viscosity of the concrete is reduced, the work state of the concrete can be improved, the adsorption quantity of high valence metal ions to the polycarboxylic acid type water reducer can be reduced, and the performance of the concrete doped with the polycarboxylic acid type water reducer is guaranteed.

Description

technical field [0001] The invention relates to the field of concrete additives, in particular to a mud content inhibitor for concrete mixed with a polycarboxylate water reducer and a preparation method and application method thereof. Background technique [0002] Concrete, which is composed of cement, gravel, sand and water, is the most used building material in the world. It is widely used in various constructions due to its cheap and easy access to raw materials, diversity and adaptability in applications, and high economic efficiency. , has become the foundation of modern society. With the continuous development of concrete technology, high-performance concrete prepared with polycarboxylate water reducer has become the development trend of concrete. [0003] Polycarboxylate water reducer belongs to the third generation of concrete water reducer. It is a high-performance water reducer developed after lignin ordinary water reducer and high-efficiency water reducer represe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C04B24/12C04B28/04
Inventor 贾吉堂张明
Owner 山东华伟银凯建材科技股份有限公司
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