Grinding aid for slag cement

A technology of slag cement and grinding aid, applied in the field of building materials, can solve the problems of low strength of slag cement and the like

Inactive Publication Date: 2013-02-27
SHANDONG HONGYI TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the model produced by Nanhua Cement Co., Ltd. is KPY99 cement grinding aid, the model CBA1110 cement additive produced by Grace Company, and the TM grinding aid developed by South China University of Technology. strength, but under the doping of a large amount of slag, the strength of the obtained slag cement is low

Method used

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  • Grinding aid for slag cement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] According to the weight ratio, heat one-third of the 66.5% deionized water to 70°C, add 1% hydroxypropyl methylcellulose to it, and keep stirring to disperse, and then add the remaining amount of cold water Wherein, cooling and stirring continuously until the solution is transparent. Then add 10% triethanolamine, 15% glycerol, 2% sodium hexametaphosphate, 3% anhydrous sodium acetate and 2.5% sodium dodecylbenzenesulfonate in sequence, stir for half an hour Get grinding aids.

[0053] The grinding aid that the present invention will obtain is in Carry out the experiment in the small mill of standard experiment, test its performance, the material ratio of cement is: the clinker of 46.0wt%, the gypsum of 4.0wt% and the slag of 50.0%, experimental result is as shown in table 1, and table 1 is the present invention The performance test results of the grinding aids obtained in Examples and Comparative Examples.

Embodiment 2

[0055] According to the weight ratio, heat one-third of the deionized water with a weight ratio of 57% to 70°C, add 2% hydroxypropyl methylcellulose to it, and keep stirring to disperse, and then add the remaining amount of cold water Wherein, cooling and stirring continuously until the solution is transparent. Then add 12% diethanolamine, 20% propylene glycol, 3% sodium hexametaphosphate, 1% anhydrous sodium acetate and 5% sodium dodecylbenzenesulfonate in sequence, and stir for half an hour to obtain Grinding aid.

[0056] The grinding aid that the present invention will obtain is in Carry out the experiment in the small mill of standard experiment, test its performance, the material ratio of cement is: the clinker of 46.0wt%, the gypsum of 4.0wt% and the slag of 50.0%, experimental result is as shown in table 1, and table 1 is the present invention The performance test results of the grinding aids obtained in Examples and Comparative Examples.

Embodiment 3

[0058] According to the weight ratio, heat one-third of the deionized water with a weight ratio of 68% to 70°C, add 2% hydroxypropyl methylcellulose to it, and keep stirring to disperse, and then add the remaining amount of cold water Wherein, cooling and stirring continuously until the solution is transparent. Then add 8% triisopropanolamine, 10% ethylene glycol, 5% sodium hexametaphosphate, 5% anhydrous sodium acetate and 2% sodium dodecylbenzenesulfonate successively, stir Grinding aid was obtained after half an hour.

[0059] The grinding aid that the present invention will obtain is in Carry out the experiment in the small mill of standard experiment, test its performance, the material ratio of cement is: the clinker of 46.0wt%, the gypsum of 4.0wt% and the slag of 50.0%, experimental result is as shown in table 1, and table 1 is the present invention The performance test results of the grinding aids obtained in Examples and Comparative Examples.

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Abstract

The invention provides a grinding aid for slag cement. The grinding aid provided by the invention comprises the following components by weight percent: 5-20wt% of alcohol amine compound, 0.1-5wt% of hydroxypropyl methyl cellulose, 5-30wt% of polyhydric alcohol compound, 0.5-10wt% of sodium hexametaphosphate, 1-10wt% of soluble sulfate, 1-8wt% of sodium dodecyl benzene sulfonate and the balance of water. In the grinding agent provided by the invention, the hydroxypropyl methyl cellulose is beneficial for stimulating the activity of the slag, forming stable hydrous products in the reaction process, improving the property of the cement, improving the strength of the cement and improving the stability of the liquid grinding aid at the same time. Experimental result shows that the grinding aid is capable of increasing the breaking strength of the cement to 9.5MPa and increasing the compressive strength to about 55MPa.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a grinding aid for slag cement. Background technique [0002] Cement is a powdery hydraulic inorganic gel material. It can be mixed with water to form a slurry. It can be hardened in the air or better hardened in water, and can firmly bond sand, stone and other materials together. It is very important in modern society. important building material. [0003] The cement industry is a resource-consuming industry. It consumes a large amount of limestone, coal, wood, etc. each year, and coal and limestone are non-renewable resources. The development of the cement industry will face resource problems. Sustainable development requires the cement industry to look for alternative materials. In the prior art, the application of industrial waste in the cement industry has become a research hotspot. Among them, slag and fly ash in industrial waste are widely used. The use of sla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B28/08C04B103/52
Inventor 赵洪义张秋艳朱化雨傅秀新冯恩娟朱孔赞陈怀成殷俊峰李成武
Owner SHANDONG HONGYI TECH
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