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Liquid cement grinding aid and preparation method thereof

A technology of cement grinding aid and liquid, which is applied in the field of cement grinding aid, liquid cement grinding aid and its preparation, and can solve problems such as environmental damage, cement water demand, concrete and easy concrete admixture compatibility effects, etc. Achieve the effect of improving early strength, increasing 3D strength and 28D strength, and reducing early contraction

Active Publication Date: 2020-12-11
费县沂州水泥有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing cement grinding aids contain chloride ions, which cause damage to the environment, and have a great impact on the water demand of cement, the workability of concrete, and the compatibility of concrete admixtures

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: A liquid cement grinding aid, calculated according to parts by weight, 190-210 parts of alcohol amine, 20-30 parts of zincate, 20-25 parts of sodium lignosulfonate, 30-40 parts of attapulgite, 5-10 parts of magnetic covalent organic framework material, 5-10 parts of acyl chloride citrate carbon quantum dots, and 200-300 parts of water.

[0023] Its preparation method comprises the following steps:

[0024] S1. Dissolve 20-25 parts of sodium lignosulfonate, 30-40 parts of attapulgite and 5-10 parts of acyl chloride citrate carbon quantum dots in 200-300 parts of water to obtain mixture A;

[0025] S2. Add 5-10 parts of magnetic covalent organic framework material to mixture A and stir to obtain mixture B;

[0026] S3. Add 190-210 parts of alkanolamine and 20-30 parts of zincate to the mixture B and stir evenly to obtain a liquid cement grinding aid.

Embodiment 2

[0027] Example 2: A liquid cement grinding aid, calculated in parts by weight, 190 parts of 3-propanolamine, 20 parts of potassium zincate, 20 parts of sodium lignosulfonate, 30 parts of attapulgite, sulfonic acid-based magnetic 5 parts of valent organic framework material and 5 parts of acyl chloride citric acid carbon quantum dots, and 200 parts of water.

[0028] Its preparation method comprises the following steps:

[0029] S1. Dissolve 20 parts of sodium lignosulfonate, 30 parts of attapulgite and 5 parts of acyl chloride citrate carbon quantum dots in 200 parts of water to obtain mixture A;

[0030] S2. Add 5 parts of sulfonic acid-based magnetic covalent organic framework material to mixture A and stir to obtain mixture B;

[0031] S3. Add 190 parts of 3-propanolamine and 20 parts of potassium zincate to the mixture B and stir evenly to obtain a liquid cement grinding aid.

Embodiment 3

[0032] Embodiment 3: A liquid cement grinding aid, calculated according to parts by weight, 210 parts of monoisopropanolamine, 30 parts of sodium zincate, 25 parts of sodium lignosulfonate, 40 parts of attapulgite, sulfonic acid-based magnetic 10 parts of valent organic framework material and 10 parts of acyl chloride citric acid carbon quantum dots, 300 parts of water.

[0033] Its preparation method comprises the following steps:

[0034] S1. Dissolve 25 parts of sodium lignosulfonate, 40 parts of attapulgite and 10 parts of acyl chloride citrate carbon quantum dots in 300 parts of water to obtain mixture A;

[0035] S2. Add 10 parts of sulfonic acid-based magnetic covalent organic framework material to mixture A and stir to obtain mixture B;

[0036] S3. Add 210 parts of monoisopropanolamine and 30 parts of sodium zincate to mixture B and stir evenly to obtain a liquid cement grinding aid.

[0037] Among them, the acyl chloride citrate carbon quantum dots are carbon quant...

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Abstract

The invention belongs to the technical field of constructional engineering, and relates to a cement grinding aid, and particularly relates to a liquid cement grinding aid and a preparation method thereof. The technical key points are as follows: the liquid cement grinding aid is prepared from the following components in parts by weight: 190-210 parts of alcohol amine, 20-30 parts of zincate, 20-25parts of sodium lignosulfonate, 30-40 parts of attapulgite, 5-10 parts of a magnetic covalent organic framework material, 5-10 parts of acylating chlorination citric acid carbon quantum dots and 200-300 parts of water. According to the liquid cement grinding aid and the preparation method thereof provided by the invention, t\he magnetic covalent organic framework material and the alkylol amine are compounded for use, so that the liquid cement grinding aid can adapt to the proportion of various cement clinkers, the early strength of cement can be effectively improved, the water demand of the cement is reduced, the early shrinkage of the cement is reduced in the cement curing process, and the heat release time of the cement is delayed, so that the late shrinkage of cement curing is reduced,and the 3d strength and 28d strength of the cement are improved.

Description

technical field [0001] The invention belongs to the technical field of construction engineering and relates to a cement grinding aid, in particular to a liquid cement grinding aid and a preparation method thereof. Background technique [0002] Cement grinding aid is a chemical additive that improves the grinding effect and performance of cement. It can significantly increase the output of cement table, the strength of cement of all ages, and improve its fluidity. Cement grinding aids can greatly reduce the phenomenon of electrostatic adsorption and ball formation during the grinding process, and can reduce the tendency of re-agglomeration of ultrafine particles formed during the grinding process. Cement grinding aids can also significantly improve the fluidity of cement, improve the grinding effect of the mill and the powder selection efficiency of the powder separator, thereby reducing the energy consumption of grinding. Cement produced with grinding aids has a lower tende...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/18C04B24/12C04B24/16C04B103/52
CPCC04B40/0039C04B24/122C04B24/16C04B2103/52C04B22/08C04B24/18C04B14/102C04B14/026
Inventor 刘宏立
Owner 费县沂州水泥有限公司
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