Cement grinding aid

A technology of cement grinding aid and ethylene glycol, applied in the field of cement grinding aid, can solve the problems of poor adaptability and stability, imperfect function, difficult to meet the requirements of grinding aid, etc., to improve the early and later compressive strength , optimize the particle gradation, promote the effect of the effect

Pending Publication Date: 2021-05-28
陶静芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to poor adaptability and stability of single-component cement grinding aids and imperfect functions, it is difficult to meet the requirements of grinding aids

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A cement grinding aid consists of the following components: 25% ethylene glycol, 25% sorbitol, 41% diethylene glycol, 5% glycerin, 2% sodium thiosulfate and 2% soda ash.

[0013] The preparation method of the above-mentioned grinding aid, the steps are as follows: ethylene glycol, sorbitol, diethylene glycol, and glycerin are sequentially added to the grinder for stirring, and then adding sodium thiosulfate and soda ash after stirring evenly, and stirring evenly, that is have to.

[0014] After testing, the grinding aid of this embodiment is used, the particle size of cement particles is controlled at 3-10 μm, and the particle gradation of cement particles is optimized; the effect of promoting cement hydration, the 3d compressive strength is increased by 20.1%, and the 28d compressive strength is increased by 20.1%. The strength increased by 19.5%, which significantly improved the early and late compressive strength of cement.

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PUM

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Abstract

The invention discloses a cement grinding aid which comprises the following components: 20-30% of ethylene glycol, 20-30% of sorbitol, 40-50% of diethylene glycol, 5-10% of glycerol, 2-3% of sodium thiosulfate and 1-5% of sodium carbonate. According to the prepared composite cement grinding aid, the granularity of cement particles can be controlled to be 3-10 microns, and the grain composition of the cement particles is optimized; the effect of cement hydration is promoted, the 3d compressive strength is improved by 20.1%, the 28d compressive strength is improved by 19.5%, and the early-stage and later-stage compressive strength of the cement is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and in particular relates to a cement grinding aid. Background technique [0002] Portland cement is a commonly used building material in the construction field. In order to improve the safety of buildings, people pay more and more attention to the quality problems of cement and the problems existing in the production process. During the grinding process of cement clinker, agglomeration will occur due to the effect of surface charge, and the occurrence of agglomeration will greatly affect the uniformity of the final cement product, thereby affecting the quality of cement. [0003] In the prior art, cement agglomeration is avoided by adding grinding aids. Common grinding aids include triethanolamine, triisopropanolamine, ethylene glycol, sorbitol, diethylene glycol, glycerin, and the like. Due to the poor adaptability and stability of single-component cement grinding aids and imperfe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/02C04B103/52
CPCC04B40/0039C04B2103/52C04B24/02C04B24/023C04B22/14C04B22/10
Inventor 陶静芳
Owner 陶静芳
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