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Cement grinding aid with lower water content and preparation method thereof

A technology of cement grinding aid and water content, which is applied in the field of building materials, can solve the problems of unfavorable cement hardening quickly and cannot be applied, and achieve the effect of improving the cement grinding effect, accelerating the hardening speed, and making up for the fluidity of cement

Inactive Publication Date: 2018-12-18
浙江长盈建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cement grinding aids with too much water content are not conducive to the rapid hardening of cement and are not suitable for all environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: Take and dissolve 25.5kg of water, 5.5kg of industrial salt, 5.5kg of sodium bicarbonate, 1.8kg of soda, 1.8kg of nitrite, 2.5kg of urea, and 2.2kg of lignin sulfonate in sequence at 20 degrees Celsius Namonate, 33kg triethanolamine, 19.5kg complex alcohol amine, 1.5kg glycerin, 1.2kg molasses, stirred until all dissolved, and left to stand to prepare cement grinding aid with lower water content.

Embodiment 2

[0012] Embodiment 2: Under the environment of 25 degrees centigrade, take and dissolve 28kg water, 5kg industrial salt, 5kg yuanming powder, 2kg soda, 2kg nitrite, 3kg urea, 2kg sodium lignosulfonate, 30kg triethanolamine, 20kg of complex alcohol amine, 2kg of glycerin, and 1kg of molasses were stirred until all of them were dissolved, and then left to stand to prepare a cement grinding aid with a low water content.

Embodiment 3

[0013] Example 3: Take and dissolve 30.5kg of water, 4.5kg of industrial salt, 4.5kg of sodium bicarbonate, 2.2kg of soda, 2.2kg of nitrite, 3.5kg of urea, and 1.8kg of lignin sulfonate in sequence at 28 degrees Celsius Sodium nitrate, 27kg triethanolamine, 20.5kg complex alcohol amine, 2.5kg glycerin, 0.8kg molasses, stirred until all dissolved, left standstill to prepare cement grinding aid with lower water content.

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PUM

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Abstract

The invention provides a cement grinding aid with lower water content and a preparation method thereof. The cement grinding aid is characterized in that the cement grinding aid is prepared by mixing the following components by weight: 25.5-30.5% of water, 4.5-5.5% of industrial salt, 4.5-5.5% of anhydrous sodium sulfate, 1.8-2.2% of sodium nitrite, 1.8-2.2% of sodium lignin sulfonate, 27-33% of triethanolamine, 19.5-20.5% of composite alcohol amine and 0.8-1.2% of molasses, with the balance being additives. The cement grinding aid of the invention has low water content, makes cement have goodfluidity and workability, and is easy to realize hardening of the cement.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a cement grinding aid with low water content and a preparation method thereof. Background technique [0002] Cement grinding aid is a chemical additive that improves the grinding effect and performance of cement. Cement grinding aids can improve the fluidity of cement, and can significantly increase the output of cement table and the strength of cement at all ages. In traditional practice, when preparing cement grinding aids, more than one-third of the specific gravity of water is usually added to ensure that the components of cement grinding aids can be better dissolved, and to make the cement have better workability and flow. sex. However, cement grinding aids with too much water content are not conducive to the rapid hardening of cement, and cannot be used in all environments. In some special scenarios, it is required that the cement can not only harden quickly, but also e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/18C04B103/52
CPCC04B40/0039C04B2103/52C04B22/124C04B22/147C04B22/10C04B22/085C04B24/126C04B24/18C04B24/122C04B24/026C04B24/001
Inventor 顾会良钱如伟顾树美沈军刘海峰沈建荣
Owner 浙江长盈建材科技有限公司