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High content regenerated mineral aggregate/asphalt mixture and preparation method thereof

An asphalt mixture, high-volume technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as reducing concrete alkalinity, increasing porosity, and reducing the degree of polymerization of silica tetrahedra. , to achieve the effect of improved interfacial bond strength, excellent mechanical properties and durability, and sustainable development.

Inactive Publication Date: 2015-07-15
SHANTOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ca(OH) 2 The loss of the concrete not only reduces the alkalinity of the concrete, increases the porosity, but also reduces the degree of polymerization of the silica tetrahedron, leading to the disintegration of the C-S-H gel

Method used

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  • High content regenerated mineral aggregate/asphalt mixture and preparation method thereof
  • High content regenerated mineral aggregate/asphalt mixture and preparation method thereof
  • High content regenerated mineral aggregate/asphalt mixture and preparation method thereof

Examples

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specific Embodiment 1

[0035] A preparation method of high-volume recycled mineral material / asphalt mixture, using construction solid waste (such as waste cement concrete or sintered clay bricks or ceramics, etc., general strength exceeding 20MPa) and petroleum asphalt (conforming to national standards) as main raw materials, Bacillus Pasteur is a biological modifier, and calcium carbonate, a product of microbial chemical deposition produced by Bacillus Pasteur, is used as a physical filler and chemical binder, and the method of microbial chemical precipitation is used to repair and enhance the performance of recycled mineral materials.

[0036] The specific preparation method is asfigure 1 The shown process flow chart mainly includes the following steps:

[0037] Step 1, the processing of recycled mineral materials: crush the solid construction waste, sieve and classify according to the national standard, and dry in a cool and dry place;

[0038] Step 2, processing of the film-coated carrier: take ...

specific Embodiment 2

[0046] A preparation method of high-volume recycled mineral material / asphalt mixture, using construction solid waste (such as waste cement concrete or sintered clay bricks or ceramics, etc., general strength exceeding 20MPa) and petroleum asphalt (conforming to national standards) as main raw materials, Bacillus Pasteur is a biological modifier, and calcium carbonate, a product of microbial chemical deposition produced by Bacillus Pasteur, is used as a physical filler and chemical binder; the method of microbial chemical precipitation is used to repair and enhance the performance of recycled mineral materials.

[0047] The specific preparation method is as figure 1 The shown process flow chart mainly includes the following steps:

[0048] Step 1, the processing of recycled mineral materials: crush the solid construction waste, sieve and classify according to the national standard, and dry in a cool and dry place;

[0049] Step 2, processing of the film-coated carrier: take th...

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Abstract

The invention relates to a high content regenerated mineral aggregate / asphalt mixture and a preparation method thereof. Building solid waste residues and petroleum asphalt are adopted as main raw materials, Bacillus pasteurii is adopted as a biological modifier, a microbial chemical deposition product calcium carbonate generated by the Bacillus pasteurii is used as a physical filler and a chemical adhesive, and the performances of regenerated mineral aggregates are restored and enhanced by adopting a microbial chemical deposition technology. The mixture is a novel asphalt mixture with building industrial solid waste slag as main mineral aggregate, a green restoration technology is adopted, and the regenerated mineral aggregate is processed through a microbial technology to realize recycling of building solid waste slag with severe pollution, so the exploitation of raw materials is greatly reduced, the cost is low, and the regenerated mineral aggregate / asphalt mixture has excellent performances.

Description

technical field [0001] The invention belongs to the field of road engineering materials and relates to material science, biochemistry and surface interface science. In particular, it relates to a high-volume recycled mineral material / asphalt mixture and a preparation method thereof. Background technique [0002] The total amount of construction solid waste in my country is hundreds of millions of tons per year. The hazards of construction solid waste are obvious: occupying a large amount of land, increasing costs, causing serious environmental pollution, destroying soil structure, and causing surface subsidence. How to recycle construction solid waste has become a key issue in environmental protection and sustainable development. China's future "Five-Year Plan" proposes that the total mileage of highways will reach 85,000 kilometers. The construction of road projects will consume a large amount of high-quality alkaline mineral materials, which will not only destroy vegetat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B18/16
CPCY02W30/91
Inventor 李庚英杜虹朱飞龙冯佛雄邝慧玲潘中尧余瑜刘冬明洪成雨
Owner SHANTOU UNIV
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