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Solid waste asphalt mixture for concrete pavement and preparation method thereof

A technology for waste asphalt mixture and concrete pavement, applied in solid waste management, sustainable waste treatment, climate sustainability, etc., can solve problems such as potential safety hazards, achieve rich edges and corners, meet road performance, and improve adhesion sexual effect

Inactive Publication Date: 2020-12-29
张延年
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in seasons with high temperature, when the traffic flow is large, the asphalt pavement will also produce ruts, and when accumulated to a certain depth, there will be safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A solid waste asphalt mixture for concrete pavement, comprising the following raw materials in parts by weight: 4 parts of natural sand, 9 parts of machine-made sand, 27 parts of iron tailings, 52.5 parts of asbestos tailings, 22.5 parts of basalt aggregates, 6 parts of asphalt, 0.4 parts of asphalt modifier, 5 parts of modified desulfurization ash, and 3 parts of iron tailings.

[0023] The asphalt modifier is siliceous acid leaching residue after extracting magnesium oxide, calcium oxide and iron oxide from asbestos tailings.

[0024] The asbestos tailings as a coarse aggregate are composed of particles with the following gradation particle size and the following weight ratio: 2.36-4.7mm: 4.7-9.5mm: 9.5-19mm=10:30:30.

[0025] The natural sand, machine-made sand and iron tailings are used as fine aggregates, and the particle diameters are all less than 2.36mm.

[0026] Said a kind of preparation method of solid waste asphalt mixture for concrete pavement comprises th...

Embodiment 2

[0038] The difference between this example and Example 1 lies in the different content of raw materials for preparing a solid waste asphalt mixture for concrete pavement, and the different content of asbestos tailings in different particle sizes.

[0039] A solid waste asphalt mixture for concrete pavement in this embodiment includes the following raw materials in parts by weight: 9 parts of natural sand, 4 parts of machine-made sand, 12 parts of iron tailings, 38.5 parts of asbestos tailings, 16.5 parts of basalt aggregate, 4 parts of asphalt 0.2 parts of asphalt modifier, 3 parts of modified desulfurization ash, and 2 parts of iron tailings.

[0040] The asbestos tailings described in this embodiment are composed of particles with the following gradation particle sizes in the following weight ratio: 2.36-4.7mm: 4.7-9.5mm: 9.5-19mm = 20:20:20.

[0041] All the other are with embodiment 1.

Embodiment 3

[0043] The difference between this example and Example 1 lies in the different content of raw materials for preparing a solid waste asphalt mixture for concrete pavement, and the different content of asbestos tailings in different particle sizes.

[0044]A solid waste asphalt mixture for concrete pavement in this embodiment includes the following raw materials in parts by weight: 6 parts of natural sand, 6 parts of machine-made sand, 23 parts of iron tailings, 45 parts of asbestos tailings, 19 parts of basalt aggregate, asphalt 5 parts, 0.3 parts of asphalt modifier, 4 parts of modified desulfurization ash, 2 parts of iron tailings.

[0045] The asbestos tailings are composed of particles with the following gradation particle sizes and the following weight ratio: 2.36-4.7mm: 4.7mm-9.5mm: 9.5-19mm = 15:25:25.

[0046] All the other are with embodiment 1.

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Abstract

The invention relates to a solid waste asphalt mixture for a concrete pavement and a preparation method of the solid waste asphalt mixture. The solid waste asphalt mixture comprises the following rawmaterials in parts by weight: 4-9 parts of natural sand, 4-9 parts of machine-made sand, 12-27 parts of iron tailings, 38.5-52.5 parts of asbestos tailings, 16.5-22.5 parts of basalt aggregate, 4-6 parts of asphalt, 0.2-0.4 part of asphalt modifier, 3-5 parts of modified desulfurized ash and 2-3 parts of iron tailing sand. According to the invention, the industrial solid waste iron tailings, asbestos tailings and steel slag are used as raw materials, the prepared asphalt mixture has good rut deformation resistance and good temperature stability, and the addition of the modified desulfurized fly ash can improve the adhesion between the asphalt and the aggregate, so the asphalt mixture has good enterprise benefits. Not only is the pavement performance of the asphalt mixture ensured to meet various index requirements, but also the solid waste is fully utilized, and the influence of tailing stacking on the environment is reduced.

Description

technical field [0001] The invention belongs to the technical field of building material preparation, in particular to a solid waste asphalt mixture for concrete pavement and a preparation method thereof. Background technique [0002] In recent years, my country has made great progress in mining, metal smelting, coal power generation, and chemical production, but at the same time it has also discharged a large amount of industrial waste. If industrial waste residues are not utilized, a large amount of accumulation will not only occupy land resources, but also cause air pollution, soil pollution, and water resource pollution. How to use these industrial waste residues and tailings has become a problem to be solved. [0003] Although asphalt pavement is generally used for urban roads at this stage, asphalt pavement has sufficient mechanical properties to withstand various forces imposed on the road by vehicle loads, and also has certain elastic and plastic deformation capabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B20/04C04B18/06C04B18/12
CPCC04B20/04C04B26/26C04B2111/0075C04B14/06C04B18/12C04B14/14C04B22/0006C04B18/064Y02W30/91
Inventor 张延年于洋李志军陈志燕杜松岩董宁秦桂娟李琦琦陈昊刘柏男张文洁崔长青王亭张于于康楠王铁源闫明程
Owner 张延年
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