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Liquid high-efficiency cement grinding aid reinforcing agent and producing method thereof

A grinding aid enhancer, cement technology, applied in cement production, solid waste management, sustainable waste treatment, etc., can solve the problems of small amount of addition, affecting the amount of ammonia released in concrete, and the strength cannot be guaranteed, so as to reduce pores , Improve the strength and stability in the later stage, and improve the durability

Inactive Publication Date: 2008-07-02
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, liquid grinding aids have been paid more and more attention due to their remarkable effect and small amount of addition. For example, invention 200610037601.5 discloses a multifunctional liquid cement grinding aid with urea added. The raw materials are mainly various effective grinding aids and a small amount of premature Strong agent, etc., but this kind of grinding aid will affect the ammonia release in concrete, and the later strength cannot be guaranteed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] First, add 100g pulp waste liquid, 4g triethanolamine, 3g ethylene glycol, 3g propylene glycol, and 3g diethylene glycol into the reaction vessel, heat to 60°C and stir for 1 hour to make mixture A; Alcohol, 1g of aluminum sulfate, 1g of phosphogypsum, 2g of 2-methyl-2,4-pentanediol, 1g of calcium nitrite, and 1g of propenylthiourea were added to 20g of water, and stirred thoroughly at 60°C for 03 hours to prepare a mixture B; then keep mixture A at 50-60°C, slowly pour into mixture B while stirring, mix well, stir thoroughly for 1 hour, and you can get a brown liquid cement grinding enhancer that is not easy to precipitate. The new grinding aid provided by the invention has obvious grinding aid effect on cement when the addition amount is 0.04%, and the sieve allowance is reduced; the compressive strength of the cement sample can be increased by 4-8MPa in 3 days under the condition of constant process conditions , the 28-day compressive strength can be increased by 7-1...

Embodiment 2

[0021] First, add 100 g of pulp waste liquid, 4 g of triethanolamine, 3 g of ethylene glycol, 3 g of propylene glycol, 3 g of glycerol, and 3 g of diethylene glycol into a reaction vessel, heat to 60° C. and stir for 1 hour to uniformly mix to prepare a mixture A; Add 1g of cetyl alcohol, 1g of aluminum sulfate, 1g of phosphogypsum, 2g of 2-methyl-2,4-pentanediol, 1g of calcium nitrite, and 1g of propylene thiourea into 20g of water, and stir thoroughly at 60°C Prepare mixture B for 0.5 hours; then keep mixture A at 50-60°C, slowly pour into mixture B while stirring, mix well, and stir thoroughly for 1 hour to obtain a brown liquid cement grinding aid that is not easy to precipitate. The new grinding aid provided by the invention has obvious grinding aid effect on cement when the addition amount is 0.1%, and the sieve allowance is reduced; the compressive strength of the cement sample can be increased by 4-8MPa in 3 days under the condition of constant process conditions , the...

Embodiment 3

[0024] First, add 100 g of pulp waste liquid, 10 g of triethanolamine, 4 g of ethylene glycol, 4 g of propylene glycol, 4 g of glycerol, and 4 g of diethylene glycol into a reaction vessel, heat to 60° C. and stir for 1 hour to uniformly mix to prepare a mixture A; Add 1g of cetyl alcohol, 1g of aluminum sulfate, 1g of phosphogypsum, 2g of 2-methyl-2,4-pentanediol, 1g of calcium nitrite, and 1g of propylene thiourea into 20g of water, and stir thoroughly at 60°C Prepare mixture B for 0.5 hours; then keep mixture A at 50-60°C, slowly pour into mixture B while stirring, mix well, and stir thoroughly for 1 hour to obtain a brown liquid cement grinding aid that is not easy to precipitate. The new grinding aid provided by the invention has obvious grinding aid effect on cement when the addition amount is 0.1%, and the sieve allowance is reduced; the compressive strength of the cement sample can be increased by 4-8MPa in 3 days under the condition of constant process conditions , th...

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PUM

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Abstract

The invention relates to a liquid cement grinding-assisting reinforcing agent and a production method thereof, particularly to a high-efficient liquid compound non-chlorinated and low alkali cement grinding-assisting reinforcing agent of a defoaming mechanism and cement stability performance and a production method thereof. Pulp waste liquid is used as main material which is in complexation with triethanolamine and polyol and added with small amount of stabilizers of phosphogypsum and aluminum sulfate, etc., to eliminate the harm of free state CaO, and ethal etc. is added to play a role of defoaming, thereby the stability and density of the cement is enhanced and the intensity of the cement is further enhanced. The production method is to separate grinding-assisting reinforcing ingredient and additive ingredient respectively and averagely which are then stirred and mixed. In addition to simple technique and low price, the product is easy for storage and transportation, which occupies little cement mixed weight, obviously enhances the early and later period intensity of the cement and is extremely applicable to wide application in cement industry.

Description

technical field [0001] The invention relates to a liquid cement grinding aid and a production method thereof, to a chlorine-free, low-alkali, high-efficiency composite enhanced liquid cement grinding aid, and in particular to an improvement in cement fluidity, defoaming activity, and cement stability Cement additives and methods of production. Background technique [0002] Energy saving and consumption reduction and improvement of cement quality are long-term and important tasks of my country's cement industry. The crushing and grinding link in the cement production process consumes the most energy in the entire production link. Through the promotion and selection of suitable cement grinding additives, the efficiency of cement grinding can be greatly improved, power consumption can be reduced, the strength of cement can be improved, and the The use of clinker in the cement production process increases the utilization of industrial waste, improves the performance of cement, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/52
CPCC04B2103/50C04B2103/58C04B2103/52C04B2103/61C04B2111/1062C04B2111/1025C04B28/02Y02P40/10Y02W30/91C04B18/241C04B22/144C04B22/148C04B24/02C04B24/122C04B24/32C04B32/02C04B40/0028C04B22/085C04B24/16
Inventor 薛方红石勇薛冬峰王立秋邹龙江
Owner DALIAN UNIV OF TECH
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