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Composite cement grinding aid and preparation method thereof

A cement grinding aid and composite technology, which is applied in the field of cement grinding aids, can solve the problems of corrosion of steel bars and affect the durability of concrete, and achieve the effects of being beneficial to environmental protection, durability and improving various properties.

Inactive Publication Date: 2011-05-18
JIANGSU BAIRUIJI NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is easy to cause the alkali-aggregate reaction of concrete and the corrosion of steel bars, which affects the durability of concrete

Method used

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  • Composite cement grinding aid and preparation method thereof
  • Composite cement grinding aid and preparation method thereof
  • Composite cement grinding aid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Strengthening agent: 7 kg of sodium acetate, 2 kg of urea; Grinding aid: 32 kg of triethanolamine, 30 kg of propylene glycol; Initiator: 3 kg of potassium persulfate; Surfactant: 6 kg of polysorbate; Blending agent: Sodium sulfate 5 kg; water reducer: 15 kg of aliphatic water reducer, stirred evenly in 150 kg of water, to obtain 250 kg of liquid high-performance composite cement grinding aid.

Embodiment 2

[0013] Strengthening agent: 3 kg of urea, 4 kg of naphthenic acid; Grinding aid: 43 kg of triisopropanolamine, 32 kg of ethylene glycol; Initiator: 4 kg of potassium persulfate; Surfactant: 1 kg of fatty acid glyceride; Blending agent: 4 kg of calcium hydroxide; water reducer: 9 kg of aliphatic water reducer, stirred evenly in 150 kg of water to obtain 250 kg of high-performance composite cement grinding aid.

Embodiment 3

[0015] Strengthening agent: 8 kg of sodium acetate, 2 kg of aluminum sulfate; Grinding aid: 29 kg of triisopropanolamine, 22 kg of polyethylene glycol, 10 kg of propylene glycol; Initiator: 3 kg of aluminum sulfate, 2 kg of potassium persulfate Surfactant: 4 kg of sorbitan fatty acid; Blending agent: 6 kg of sodium hydroxide; Water reducer: 10 kg of lignin-based water-reducer, 4 kg of polycarboxylate-based water-reducer, stir evenly in 150 kg of water, Promptly make 250 kilograms of liquid high-performance composite cement grinding aids.

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Abstract

The invention discloses a composite cement grinding aid belonging to the technical field of building materials and chemical engineering. The composite cement grinding aid comprises the following raw materials in parts by weight: 5-25 parts of reinforcing agent, 40-80 parts of grinding aid, 1-20 parts of surfactant, 1-20 parts of initiating agent, 1-20 parts of blender and 10-40 parts of water reducing agent. The composite cement grinding aid prepared by using the method is favorable for improving various properties of cement, has low blending quantity, is beneficial to environment protection, hardly causes alkali aggregate reaction of concrete and steel reinforcement corrosion, and is beneficial to the durability of the concrete.

Description

technical field [0001] The invention relates to a cement grinding aid and a preparation method of the cement grinding aid, which belongs to the technical field of building materials chemical industry. Background technique [0002] Grinding is completed by the rotation of the mill and the collision, extrusion and friction of the grinding bodies in the mill. It is a process of particle size change and mechanochemical change. The grinding process is also a process with high energy consumption and low efficiency, and more than 80% of the energy is wasted. In order to reduce energy consumption and improve grinding efficiency, people usually take two measures: one is to improve the mechanism of the grinding machine, the grinding process, the grinding method, etc. so that more mechanical energy can act on the material to be ground; the other is Adding a small amount of chemical additives in the grinding process improves the mechanochemical process of grinding, so as to achieve the...

Claims

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Application Information

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IPC IPC(8): C04B24/32C04B24/12C04B24/26C04B103/52
CPCC04B24/32C04B24/085C04B24/12
Inventor 王兴文蒋衡徐荣平
Owner JIANGSU BAIRUIJI NEW MATERIAL
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