High performance concrete prepared from waste slag powder and preparation method thereof

A technology of high-performance concrete and slag powder, which is applied in the field of concrete, can solve the problems that solid industrial waste cannot be effectively utilized, and achieve the effects of improving mechanics and working performance, increasing interface interaction, and saving energy

Inactive Publication Date: 2018-10-12
ANHUI YUTE CONCRETE STRUCTURE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the solid industrial wastes such as slag, steel slag, fly ash, coal gangue, red mud, tailings and other solid industrial waste produced by iron and steel metallurgy, energy, non-ferrous metals, mining and other industries in the country total 1.8 billion tons every year, but the comprehensive utilization rate is only 55.7%. A large amount of solid industrial waste is still not effectively utilized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In this embodiment, a high-performance concrete prepared from waste slag powder is made of the following raw materials in parts by weight: 50 parts of waste slag powder, 25 parts of modified hydrotalcite, 30 parts of modified polypropylene, 15 parts of polycarbonate, glass 10 parts of fiber, 2 parts of anti-stress cracking agent, 100 parts of water;

[0022] Among them, the polycarbonate is an aromatic polycarbonate with a molecular weight of 20,000-30,000, which is bisphenol A polycarbonate; the anti-stress cracking agent is methyl acrylate; the modified polypropylene is made of talcum powder filled polypropylene , made by mixing 50 parts of polypropylene, 2 parts of compatibilizer POE, and 8 parts of talcum powder; the particle size of waste slag powder is 500 mesh;

[0023] Among them, the preparation method of modified hydrotalcite includes the following steps: S1, put 1 part of hydrotalcite and 150 mL of absolute ethanol in a three-necked flask, and place the three...

Embodiment 2

[0026] In this embodiment, a high-performance concrete prepared from waste slag powder is made of the following raw materials in parts by weight: 80 parts of waste slag powder, 40 parts of modified hydrotalcite, 50 parts of modified polypropylene, 30 parts of polycarbonate, glass 25 parts of fiber, 6 parts of anti-stress cracking agent, 200 parts of water;

[0027] Among them, the polycarbonate is an aromatic polycarbonate with a molecular weight of 20,000-30,000, which is bisphenol A polycarbonate; the anti-stress cracking agent is acrylonitrile-butadiene-acrylate and maleic anhydride graft, Moreover, the active acrylate content in acrylonitrile-butadiene-acrylate and maleic anhydride grafts is ≥15%; modified polypropylene is made of talcum powder filled polypropylene, consisting of 75 parts of polypropylene, compatibilizer It is made by mixing 5 parts of POE and 15 parts of talc powder; the particle size of waste slag powder is 1000 mesh;

[0028] Among them, the preparatio...

Embodiment 3

[0031] In this embodiment, a high-performance concrete prepared from waste slag powder is made of the following raw materials in parts by weight: 65 parts of waste slag powder, 37 parts of modified hydrotalcite, 40 parts of modified polypropylene, 23 parts of polycarbonate, glass 18 parts of fiber, 4 parts of anti-stress cracking agent, 150 parts of water;

[0032] Among them, the polycarbonate is an aromatic polycarbonate with a molecular weight of 20,000-30,000, which is bisphenol A polycarbonate; the anti-stress cracking agent is methyl acrylate, glycidyl methacrylate, random terpolymer , acrylonitrile-butadiene-acrylate and maleic anhydride grafts, wherein the active acrylate content in acrylonitrile-butadiene-acrylate and maleic anhydride grafts is ≥15%; modified poly Propylene is made of talcum powder filled polypropylene, which is mixed with 62 parts of polypropylene, 3.5 parts of compatibilizer POE, and 11 parts of talc powder; the particle size of waste slag powder is...

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Abstract

The invention provides high performance concrete prepared from waste slag powder, and relates to the technical field of concrete pipes. The high performance concrete prepared from the waste slag powder is prepared from the following raw materials: waste slag powder, modified hydrotalcite, modified polypropylene, polycarbonate, glass fibers, an anti-stress cracking agent, and water. With the addition of all raw materials of the high-performance concrete, the mechanical and working performance of the concrete is improved, the frost resistance, impermeability, sulfate corrosion resistance and other durability properties of the concrete are increased, the waste slag powder material has abundant sources, and can take tailings, coal gangue and other industrial waste slag and waste rock materialsand stone chips produced in the production process of machine-made sand as raw material; the production cost of the concrete is greatly reduced, a large amount of industrial waste slag can be used, the environment is improved, the pollution is reduced, the energy is saved, and good social and economic benefits are generated.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to high-performance concrete prepared from waste slag powder. Background technique [0002] In the construction industry, with the emergence of high-rise, long-span, and thin-walled building structures, the demand for concrete with good workability, high strength, and high durability is increasing, and high-performance concrete has become a research topic for scientific and technological workers. In recent years, research on high-performance concrete has focused on several aspects such as concrete structure design, low water-cement ratio, active mineral fine admixtures, and high-efficiency admixtures. Therefore, using industrial waste or natural minerals to prepare concrete fine admixtures is one of the effective means to realize the configuration of high-performance concrete. [0003] At present, solid industrial wastes such as slag, steel slag, fly ash, coal gangue, red mud, tai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/18C04B20/02
CPCC04B26/18C04B20/023C04B18/141C04B22/06C04B24/2611C04B14/42C04B22/002C04B24/2641
Inventor 肖吕阳
Owner ANHUI YUTE CONCRETE STRUCTURE TECH
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