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Cement slump-retaining grinding aid as well as preparation method and application thereof

A grinding aid and cement technology, applied in the field of cement slump-preserving grinding aids, can solve problems such as concrete slump loss, and achieve the effects of improving performance, improving adaptability, and overcoming single performance.

Inactive Publication Date: 2011-11-16
SHANXI KAIZHOU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a slump-preserving grinding aid with simple manufacturing process, low cost, which can effectively improve the adaptability of cement and admixtures, and solve the problem of concrete slump loss, and its preparation method and application

Method used

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  • Cement slump-retaining grinding aid as well as preparation method and application thereof
  • Cement slump-retaining grinding aid as well as preparation method and application thereof
  • Cement slump-retaining grinding aid as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Example 1: Prepare the following raw materials in mass percentages: 4 g of sodium tripolyphosphate, 21 g of sodium hexametaphosphate, 10 g of ethylene glycol, 2.0 g of the above-mentioned carboxylic acid group-containing sulfamate-based water reducing agent and 63 g of tap water. Mix the sodium tripolyphosphate and water and stir evenly. When the sodium tripolyphosphate is completely dissolved, add the sodium hexametaphosphate while stirring; when the sodium hexametaphosphate is completely dissolved, add the ethylene glycol and the carboxylic acid group-containing sulfamic acid Acidic acid water reducer, stir evenly to obtain No. 1 slump retaining grinding aid.

Embodiment 2

[0025] Example 2: Prepare the following mass percentages of raw materials: 6.0g sodium tripolyphosphate, 19.0g sodium hexametaphosphate, 8.0g ethylene glycol, 1.0g sulfamate water reducing agent containing carboxylic acid group and 66.0g water. The preparation method is the same as that in Example 1, and No. 2 slump retaining grinding aid is obtained.

Embodiment 3

[0026] Example 3: Prepare the following mass percentages of raw materials: 7.0g sodium tripolyphosphate, 10.0g sodium hexametaphosphate, 4.0g ethylene glycol, 0.5g carboxylic acid group-containing sulfamate-based water reducing agent and 78.5g water. The preparation method is the same as that of Example 1, and No. 3 slump retaining grinding aid is obtained.

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Abstract

The invention relates to a cement slump-retaining grinding aid as well as a preparation method and an application thereof. The cement slump-retaining grinding aid is composed of the following components in percentage by weight: 4.0-7.0% of sodium tripolyphosphate, 10.0-21.0% of sodium hexametaphosphate, 4.0-10% of ethylene glycol, 0.5-2.0% of carboxylic-group-containing amino sulfonate water reducing agent and 60.0-81.5% of water, wherein the carboxylic-group-containing amino sulfonate water reducing agent is formed by condensation of phenol, sodium p-amino benzene sulfonate and formaldehyde in a molar ratio of (1.1-1.5): (0.9-1.2): (3.5-3.7) with a benzoic acid sulfonation monomer. The addition amount of the cement slump-retaining grinding aid provided by the invention is 0.03-0.1% of the total weight of cement; and the cement slump-retaining grinding aid has the characteristics of simple preparation process and low cost, and can effectively improve the adaptability of cement and additives.

Description

Technical field [0001] The invention relates to a cement slump retaining grinding aid, in particular to a slump retaining grinding aid used for improving the adaptability of cement and additives and a preparation method thereof. Background technique [0002] From the perspective of the development trend of the world cement industry, the production and consumption of cement in the world will continue to grow at a certain speed in the future. Cement production in some developed countries has begun to decline, and the focus of cement production has gradually shifted to developing countries. It is expected that my country will become a major exporter of cement in the future. However, due to the unreasonable industrial structure, the quality of cement is uneven and the overall quality is poor. Compared with foreign cement, it is mainly because the amount of cement admixture is larger and the fineness of cement is relatively coarse, which causes the early strength of cement to be low....

Claims

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Application Information

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IPC IPC(8): C04B24/16
CPCC04B40/0039C04B28/00C04B24/22
Inventor 李宪军张树元孙钢
Owner SHANXI KAIZHOU TECH
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