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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 in the field of cement manufacturing, and can solve the problems of reducing the water consumption of cement standard consistency and unfavorable living environment of civil buildings.

Inactive Publication Date: 2008-12-10
NANJING YONGNENG MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are some defects in the formula composition of these liquid grinding aids: there is no substance added that can significantly reduce the water consumption of the standard consistency of cement; urea reacts with the alkali after hydration of cement, and ammonia gas will be released, which is harmful to civil buildings. The environment is unfavorable; no substances that can significantly enhance the strength of cement in the later stage are added

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: A kind of liquid cement grinding aid is made up of triethanolamine, diethylene glycol, lactose, triterpene saponin air-entraining agent and sodium lignosulfonate, each component mass percent: triethanolamine 5%, diethylene glycol 20%, lactose 30%, triterpenoid saponin air-entraining agent 1%, sodium lignosulfonate 5%, and the balance is water.

Embodiment 2

[0011] Embodiment 2: A kind of liquid cement grinding aid is made up of triethanolamine, diethylene glycol, lactose, triterpene saponin air-entraining agent and sodium lignosulfonate, each component mass percent: triethanolamine 20%, diethylene glycol 5%, lactose 10%, triterpenoid saponin air-entraining agent 5%, sodium lignosulfonate 1%, and the balance is water.

Embodiment 3

[0012] Example 3 A liquid cement grinding aid consisting of triethanolamine, diethylene glycol, lactose, triterpene saponin air-entraining agent and sodium lignosulfonate, the mass percentage of each component: triethanolamine 10%, diethylene glycol 15% %, lactose 15%, triterpenoid saponin air-entraining agent 3%, sodium lignosulfonate 3%, and the balance is water.

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Abstract

The invention discloses a liquid cement grinding aid. The grinding aid consists of the following compositions in weight percentage: 5 to 20 percent of trolamine, 5 to 20 percent of diglycol, 10 to 30 percent of lactose, 1 to 5 percent of triterpenoid saponin air entraining agent, 1 to 5 percent of sodium lignosulphonate and the balance being water. The technical proposal has a function of properly entraining air to reduce the water consumption of the cement standard consistence. The further optimum proposal of the invention is to add sodium nitrite with a mass ration of between 5 and 20 percent based on the technical proposal. The technical proposal can improve the later strength of cement and enhance the corrosion-inhibiting capability of reinforced concrete; meanwhile, the invention also discloses a preparation method of the liquid cement grinding aid.

Description

technical field [0001] The invention relates to a cement grinding aid in the cement manufacturing field, in particular to a liquid cement grinding aid and a preparation method thereof. Background technique [0002] At present, domestic cement grinding aid products have two forms: powder and liquid. Because the liquid product is easy to use, it can be added smoothly only by adding a storage tank and a liquid metering pump, and does not require complicated and heavy equipment, so it has gradually been widely used. The formula of liquid cement grinding aid can be basically fixed, and does not need to be changed frequently in order to adapt to the changes of cement and seasons like concrete admixture products. The formula of existing liquid cement grinding aid is mainly composed of amines, ethylene glycol , acetate and other single or compound products. Because these products have less dosage, convenient liquid metering and adding, improve the grinding efficiency of the mill b...

Claims

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Application Information

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IPC IPC(8): C04B24/18C04B24/12C04B7/52C04B103/52
CPCC04B40/0046C04B2103/52C04B2111/00068C04B2111/26
Inventor 袁玉乔张伟
Owner NANJING YONGNENG MATERIALS
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