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An ecological cementitious material

A gelling material and an ecological technology, applied in the field of chemical building materials, can solve the problems of little research on gelling materials, achieve good environmental benefits, improve hydration activity, and prevent particle aggregation

Active Publication Date: 2015-11-18
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At home and abroad, most of the research on the recycling of construction waste focuses on the utilization of recycled aggregates, but there is little research on the production of cementitious materials.

Method used

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  • An ecological cementitious material
  • An ecological cementitious material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The ratio of the cementitious material is: 55 parts of construction waste brick powder, 25 parts of slag, 10 parts of desulfurized ash, and 10 parts of compound grinding aid activator; the proportion of compound grinding aid activator is: 75 parts of calcined modified desulfurized gypsum, 10 parts of sodium metasilicate pentahydrate, 10 parts of sodium aluminate, 4.7 parts of naphthalene-based water reducer, 0.2 part of triethanolamine, 0.05 part of potassium humate, and 0.05 part of glycerol.

[0024] The materials are measured and ground to make cementitious materials, and the relevant performance indicators of the tested cementitious materials are shown in the following table:

[0025]

Embodiment 2

[0027] The ratio of the cementitious material is: 60 parts of construction waste brick powder, 15 parts of slag, 13% of desulfurization ash, 12 parts of compound grinding aid activator; the proportion of compound grinding aid activator is: 80 parts of calcined modified desulfurized gypsum, 8 parts of sodium metasilicate pentahydrate, 7 parts of sodium aluminate, 4.7 parts of naphthalene-based or polycarboxylate superplasticizer, 0.2 part of triethanolamine, 0.05 part of potassium humate, and 0.05 part of glycerin.

[0028] The materials are measured and ground to make cementitious materials, and the relevant performance indicators of the tested cementitious materials are shown in the following table:

[0029]

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Abstract

The invention relates to an ecotypic cementing material, which comprises the components of: 40-60 parts of building waste brick powder, 15-30 parts of slag, 10-20 parts of steel plant semi-dry sintering flue gas desulfurization ash, and 10-15 parts of a composite grinding aid activator, which is prepared by raw materials in the following weight ratio: 70-85 parts of calcination modified desulfurization gypsum, 5-10 parts of sodium metasilicate pentahydrate, 5-10 parts of sodium aluminate, 1-5 parts of a naphthalene-based water reducer, 0.1-0.5 part of triethanolamine, 0.05-0.1 part of potassium humate, and 0.05-0.1 part of glycerol. The cementing material of the invention utilizes the synergetic and complementary effects of component materials, realizes resource utilization of building waste brick powder and semi-dry desulphurization ash as well as other solid wastes, thus making waste profitable.

Description

technical field [0001] The invention belongs to the technical field of application of chemical building materials, and in particular relates to an ecological gelling material prepared from solid wastes such as construction waste, slag, semi-dry desulfurization ash and the like. Background technique [0002] At present, my country is in the peak period of house demolition and construction, and hundreds of millions of tons of construction waste are generated every year. Most of the construction waste is solid waste, including stones, concrete blocks, bricks, ceramic fragments, etc. The research on the industrialization of construction waste treatment in my country started relatively late, and most of them focus on simple landfill and dumping. This not only encroached on a large amount of land, but also aggravated the pollution of the air and water environment, and brought many adverse effects on society, environment and resources. The resource utilization of construction was...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/26C04B7/24
CPCY02P40/145Y02P40/10
Inventor 赵风清张志国郭斌曹素改李佩欣穆琰付应利梁雪松
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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