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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, reducing losses, and overcoming single performance.

Inactive Publication Date: 2012-11-21
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 sulfamate-based water reducer containing carboxylic acid groups, and 63 g of tap water. Mix sodium tripolyphosphate and water and stir evenly, when sodium tripolyphosphate is completely dissolved, add sodium hexametaphosphate evenly while stirring; when the sodium hexametaphosphate is completely dissolved, add ethylene glycol and sulfamic acid group containing carboxylic acid group Salt-based superplasticizer, stirred evenly to obtain No. 1 slump-preserving grinding aid.

Embodiment 2

[0025] Embodiment 2: prepare the raw material of following mass percentage: 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 in Example 1 to obtain No. 2 slump-retaining grinding aid.

Embodiment 3

[0026] Embodiment 3: prepare the raw material of following mass percentage: 7.0g sodium tripolyphosphate, 10.0g sodium hexametaphosphate, 4.0g ethylene glycol, 0.5g sulfamate water reducing agent containing carboxylic acid group and 78.5g water. The preparation method is the same as in Example 1 to obtain No. 3 slump-retaining grinding aid.

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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 for improving the adaptability of cement and admixtures and a preparation method thereof. Background technique [0002] Judging from the development trend of the world cement industry, the production and consumption of cement in the world will still maintain a certain growth rate in the future. The cement output of some developed countries began to decline, and the focus of cement production 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, the main reason is that the amount of cement mixed materials is relatively large, and the fineness of cement is relatively coarse, which in turn causes the early strength of cemen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/16
CPCC04B24/22C04B28/00C04B40/0039
Inventor 李宪军张树元孙钢
Owner SHANXI KAIZHOU TECH
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