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Grinding aid for expanding agent and preparation method of grinding aid

The technology of an expansion agent and a grinding aid is applied in the field of preparation of the grinding aid for the expansion agent, which can solve the problems such as the decrease of concrete strength, and achieve the effects of reducing water consumption, improving grindability, and easily obtaining raw materials.

Active Publication Date: 2015-01-28
HUZHOU FENGSHENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a grinding aid for the expansion agent, which can not only increase the output of the expansion agent per unit hour, reduce the power consumption of grinding, but also does not affect the performance of the expansion agent, has no corrosion to the steel bar, and solves the problem of The problem of lower concrete strength in the early stage caused by the replacement of cementitious materials by expansion agents reduces production costs, and the raw materials are easy to obtain and easy to use

Method used

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  • Grinding aid for expanding agent and preparation method of grinding aid
  • Grinding aid for expanding agent and preparation method of grinding aid
  • Grinding aid for expanding agent and preparation method of grinding aid

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A kind of grinding aid embodiment 1 for expansion agent of the present invention comprises the following components, and each component is by mass percentage:

[0038]

[0039] The preparation method of the grinding aid for the expansion agent comprises the following steps successively:

[0040] Step 1. Mix triisopropanolamine, stearic acid, and polycarboxylate water reducer according to the ratio of raw materials, and mix and dilute the obtained mixture with absolute ethanol at room temperature at a mass ratio of 8:2 to obtain the pre-prepared mixture solution;

[0041] Step 2, mixing sodium hexametaphosphate, gypsum powder, fly ash, and talcum powder according to the ratio of raw materials and stirring for 10 minutes, and mixing evenly to obtain a mixture;

[0042] Step 3. Continue to stir the mixture in step 2. At the same time, atomize the premix solution obtained in step 1 evenly and spray it on the surface of the mixture in step 2. After drying, the grinding a...

Embodiment 2

[0043] A kind of grinding aid embodiment 2 for expansion agent of the present invention comprises following components, and each component is by mass percent:

[0044]

[0045] The preparation method of the grinding aid for this expansion agent is the same as in Example 1.

Embodiment 3

[0046] A kind of grinding aid embodiment 3 for expansion agent of the present invention comprises following components, and each component is by mass percent:

[0047]

[0048]

[0049] The preparation method of the grinding aid for this expansion agent is the same as in Example 1.

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Abstract

The invention discloses a grinding aid for an expanding agent. The grinding aid is prepared from the following components in percentage by mass: 25-45% of gypsum powder, 20-40% of coal ash, 10-25% of talcum powder, 2-10% of triisopropanolamine, 1-5% of stearic acid, 0.5-3% of sodium hexametaphosphate and 0.5-3% of a polycarboxylate superplasticizer; the sum of the percentages by mass of all the components is 100%. The invention also discloses a preparation method of the grinding aid for the expanding agent. The grinding aid for the expanding agent is capable of increasing the output per machine of the expanding agent and reducing the power consumption of grinding without affecting the performance of the expanding agent and corroding reinforcements; meanwhile, the problem of reduction in early concrete strength due to replacement of a cementing material with the expanding agent is solved and the production cost is reduced; besides, the raw materials of the grinding aid are highly available and the grinding aid is convenient to use.

Description

technical field [0001] The invention belongs to the technical field of concrete additives, relates to a grinding aid for an expansion agent, and also relates to a preparation method of the grinding aid for an expansion agent. Background technique [0002] With the development of the field of concrete admixtures, the application range of expansion agents is becoming wider and wider, and the demand is increasing. The addition of expansion agents can greatly improve the crack resistance of concrete. The production process of the expansion agent is similar to the cement production process, and its production process can be summarized as two grindings and one firing, that is, raw meal grinding, clinker calcination, and clinker grinding. During the grinding process, the material, the mill and the material will be charged with static electricity due to the impact and friction of each other, so that the material is adsorbed on the surface of the grinding medium, resulting in ball en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/24C04B103/52
Inventor 部孝发吴文选
Owner HUZHOU FENGSHENG NEW MATERIAL
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