Method for preparing low-grade rolled concrete by using multiple industrial waste slag

A technology of roller compacted concrete and industrial waste, which is applied in solid waste management, sustainable waste treatment, climate sustainability, etc., and can solve the problems of low mixture strength, low utilization rate of waste residue, and less space for use

Inactive Publication Date: 2008-04-23
王文举
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But, owing to above-mentioned patent and technology one, improve the strength of mixture by adding binding material (cement, asphalt, lime and solidifying agent etc.);
Therefore, due to factors such as high binder cost, low mixture strength, and small waste residue usage, the product has low profit and little space for use, and has certain limitations in environmental pollution control and popularization and application.

Method used

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  • Method for preparing low-grade rolled concrete by using multiple industrial waste slag

Examples

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Effect test

example 1

[0016] 26% red mud, 20% alkali slag, 40% fly ash, 7% calcium carbide mud, 2% titanium dioxide slag, 4% pyrite slag (or steel slag), and a small amount of composite activator, used in Jiaozuo City, Henan Province For the base course of the source road test section, the unconfined compressive strength of the test piece was 3.98MPa for 3 days, 5.51MPa for 7 days, and 7.61MPa for 28 days. The test piece was insoluble in water.

example 2

[0018] 25% of red mud, 18% of alkali slag, 40% of fly ash, 14% of calcium carbide mud, 2% of titanium dioxide slag, a small amount of composite activator, adding 0.3‰ water reducing agent, and using CY500 automatic hydraulic brick making machine to make There are 1,200 standard bricks, and the average compressive strength is 11.8MPa and the average flexural strength is 3.16MPa after 28 days.

example 3

[0020] On September 18, 2006, a test section of 275 meters was paved on the second-grade road in Xiuwu County, Henan Province. 20% of coal ash, 25% of calcium carbide mud, 2% of titanium dioxide slag, and a small amount of composite activator are mixed in the construction mix, mixed with a BMW-380 road mixer, leveled with a grader, statically pressed once with a 25T road roller, and rolled twice. The smooth surface is statically pressed once, and the unconfined compressive strength of the test piece is 4.85MPa for 7 days, and the strength for 28 days is 13.5MPa.

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Abstract

This invention relates to a method for preparing low-grade concrete by utilizing industrial-residues, such as: red mud (from sintering process aluminium production), residue from chlorine-alkali process for producing alkali, carbide slag, pyrite cinder, waste slag of titanium oxide and coal ash and the like. The water content of these residues is regulated and they are proportioned, mixed evenly by mechanical agitation and added no binder suchas cement, lime or asphalt to produce this inventive products. This product can be used as basic material under road structure, foundation earth; or for producing low grade concrete, baking-free bricks, building-blocks with the strength being up to 13MPa. Advantages are: simple process, low cost, wide use, high utilization rate of industrial wastes, no secondary pollution.

Description

technical field [0001] The method for preparing low-grade roller compacted concrete by utilizing various industrial waste residues belongs to the field of resource utilization of industrial waste residues. Background technique [0002] According to relevant statistics, industries around the world produce about 2.1 billion tons of solid waste every year. As far as China is concerned, the annual industrial waste reaches more than 600 million tons, and the cumulative accumulation over the years has reached nearly 6 billion tons. Except for a small part of utilization, most of them are in the state of simple stacking and random discharge. It not only occupies a large amount of land and farmland, but also pollutes the surrounding soil, water, air and environmental sanitation, causing potential and long-term harm to humans. The resulting direct economic losses amount to more than 30 billion yuan per year. Therefore, the utilization of industrial waste as a resource has become a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/04C04B18/14C04B18/08
CPCY02W30/91
Inventor 王文举
Owner 王文举
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