Magnetized cement grinding aid mother liquor for building

A cement grinding aid, a technology for construction, applied in the field of construction processing aids, can solve the problems of unsatisfactory cement setting time and compressive strength, poor stability, reduced strength of cement concrete, etc., to achieve excellent flow performance, improve Product stability and the effect of improving compressive strength

Inactive Publication Date: 2018-10-12
CHENGDU RONGDE CONSTR LABOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the poor stability of the final product in the preparation of the existing cement grinding aids, the unsatisfactory setting time and compressive strength of the cement introduced into the cement, and the crystallization of the cement in the preparation of the cement in a special environment is easy to cause crystallization and precipitation of the cement concrete. To solve the problem of strength reduction, a mother liquor of magnetized cement grinding aid for construction is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Make cement grinding aid based on following proportioning by weight:

[0025] First put 20 parts of polyols, 3 parts of calcium lignosulfonate and 1 part of 50% hydrochloric acid solution with a pH of 2 to 3 into the reactor for mixing, then add 3 parts of alkaline lignin into the reactor, Adjust the pH value of the mixture to 6, then add 3 parts of hydroxyethyl methyl cellulose ether and 3 parts of hydroxyethyl acrylate to the reaction kettle, and let it stand for 2 hours, and finally import the mixture after standing still from the reaction kettle for stirring tank, add 120 parts of magnetized water and 5 parts of sucrose monoester and stir. After stirring for 1 hour, the cement grinding aid mother liquor is prepared.

Embodiment 2

[0027] Make cement grinding aid based on following proportioning by weight:

[0028] First put 80 parts of polyols, 7 parts of calcium lignosulfonate and 4 parts of 50% sulfuric acid solution with a pH of 2 to 3 into the reactor for mixing, then add 7 parts of alkaline lignin into the reactor, Adjust the pH value of the mixture to 8, then add 7 parts of hydroxyethyl methyl cellulose ether and 7 parts of hydroxyethyl acrylate to the reaction kettle, and let it stand for 3 hours, and finally import the mixture after standing still from the reaction kettle for stirring tank, add 200 parts of magnetized water and 10 parts of sucrose monoester and stir, after stirring for 1.5 hours, the cement grinding aid is prepared.

Embodiment 3

[0030] Make cement grinding aid based on following proportioning by weight:

[0031] First put 50 parts of polyol, 5 parts of calcium lignosulfonate and 3 parts of 50% hydrochloric acid solution with a pH of 2 to 3 into the reactor for mixing, then add 4 parts of alkaline lignin into the reactor, Adjust the pH value of the mixture to 7, then add 4 parts of hydroxyethyl methyl cellulose ether and 5 parts of hydroxyethyl acrylate to the reactor, and let it stand for 2.5 hours, and finally import the mixture after standing Stir tank, add 160 parts of magnetized water and 8 parts of sucrose monoester and stir, after stirring for 1 hour, cement grinding aid is prepared.

[0032] The cement grinding aids prepared by equal weight embodiment 1, embodiment 2 and embodiment 3 are marked as the first group, the second group and the third group respectively, and the existing commercially available grinding aids of equal weight are marked as The fourth group, its formula is by mass ratio ...

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PUM

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Abstract

The invention relates to the field of building processing aids, and discloses magnetized cement grinding aid mother liquor for building. The mother liquor comprises polyol, calcium lignosulfonate, anacidic solvent, alkaline lignin, hydroxyethyl methyl group cellulose ether, hydroxyethyl acrylate, magnetized water and auxiliary materials, the polyol, the calcium lignosulfonate and the acidic solvent are fixed in a reaction kettle, the alkaline lignin is added to the reaction kettle to adjust the pH of the mixture, the hydroxyethyl methyl cellulose ether and hydroxyethyl acrylate are added to the reaction kettle, standing is conducted, finally, a mixture after standing is introduced into a stirring tank from the reaction kettle, the magnetized water and the auxiliary materials are added forstirring, and the liquor is obtained after stirring is completed. The liquor solves the problems that the stability of a final product is poor in the preparation of existing cement grinding aids, andthe cement setting time and the compressive strength in the introduced cement are not ideal.

Description

technical field [0001] The invention relates to the field of construction processing aids, in particular to a mother liquor of magnetized cement grinding aids for construction. Background technique [0002] Cement is usually a gray powder. After adding an appropriate amount of water, it becomes a plastic slurry, which can firmly bond materials such as sand and stone together. Cement grinding aid is a chemical additive that improves the grinding effect and performance of cement. It is used in cement During the grinding process of materials, adding a small amount of grinding aid can significantly improve the grinding efficiency or reduce energy consumption, and significantly increase the output and various technical indicators of the cement table without damaging the performance of the cement itself. As a chemical activator, the grinding aid can improve the distribution of cement particles and stimulate the hydration power, thereby improving the early strength and later streng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B103/52
CPCC04B40/0039C04B2103/52C04B24/026C04B24/18C04B22/122C04B22/141C04B24/24C04B24/383C04B24/045C04B22/002C04B24/10
Inventor 曾晓予
Owner CHENGDU RONGDE CONSTR LABOR
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