Asphalt concrete as well as preparation method and application thereof

A technology of asphalt concrete and asphalt, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of easy flow of terminals, many terminals, and inability to purify, so as to prevent further diffusion, wide purification range, cost-saving effect

Active Publication Date: 2014-09-10
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The treatment of polluting gases and PM2.5 particles is facing many difficulties, such as the generation of many terminals, the

Method used

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  • Asphalt concrete as well as preparation method and application thereof
  • Asphalt concrete as well as preparation method and application thereof
  • Asphalt concrete as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This example provides an asphalt concrete, which consists of the following raw materials in parts by weight: 83 kg of limestone, 6 kg of limestone powder, 2 kg of magnetite, 2 kg of pyrite, 2 kg of rectorite, and 5 kg of SBS modified asphalt.

[0033] The preparation method of above-mentioned asphalt concrete is as follows:

[0034] Grinding pyrite, rectorite, and magnetite into fine powders respectively, so that the fineness of pyrite, rectorite, and magnetite is controlled at 20 mesh to 2000 mesh, and set aside;

[0035] Weigh 83kg of limestone heated to the temperature range of 160℃~180℃, dry mix the limestone for 20~40s, preferably 30s, then add 5kg of SBS modified asphalt and wet mix for 80~100s, preferably 90s, and add 6kg of limestone powder at the same time Wet mixing with 2kg of magnetite, 2kg of pyrite, and 2kg of rectorite fine powder for 80-100s, preferably 90s, to prepare 100kg of asphalt concrete capable of purifying and adsorbing PM2.5 particles.

[0036...

Embodiment 2

[0039] This embodiment provides an asphalt concrete, which is composed of the following raw materials in parts by weight: 90 kg of limestone, 4 kg of limestone powder, 1 kg of magnetite, 1 kg of pyrite, 1 kg of rectorite, and 3 kg of SBS modified asphalt.

[0040] The preparation process of the asphalt concrete of this embodiment is the same as that of Embodiment 1.

[0041] The asphalt concrete of this embodiment is used to pave the upper layer of the road according to the OGFC-13 gradation type, and the paving thickness is kept within the range of 3cm to 4cm, preferably 3.5cm, and the ordinary asphalt concrete construction method is used for paving. Can.

Embodiment 3

[0043] The present embodiment provides a kind of asphalt concrete, which is composed of the following raw materials in parts by weight: limestone 86.5kg, limestone powder 5kg, magnetite 1.5kg, pyrite 1.5kg, rectorite 1.5kg, SBS modified Bitumen 4kg.

[0044] The preparation process of the asphalt concrete of this embodiment is the same as that of Embodiment 1.

[0045] The asphalt concrete of this embodiment is used to pave the upper layer of the road according to the OGFC-13 gradation type, and the paving thickness is kept within the range of 3cm to 4cm, preferably 3.5cm, and the ordinary asphalt concrete construction method is used for paving. Can.

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Abstract

The invention provides asphalt concrete as well as a preparation method and application thereof. The asphalt concrete consists of the following materials in parts by weight: 83-90 parts of aggregates, 4-6 parts of mineral powder, 1-2 parts of magnetite, 1-2 parts of pyrite, 1-2 parts of rectorite, 3-5 parts of asphalt, based on 100% in total. According to the asphalt concrete, produced electrons have a strong electro-adsorption function on PM 2.5 particles with positive charge in air based on thermo-electric effect of the pyrite and the magnetite under road surface temperature difference action; by combining physical absorption of rectorite, the asphalt concrete has strong purifying effect for PM 2.5 particles. The asphalt concrete is low in mineral cost, simple in preparation process, and convenient to construct, can effectively reduce content of PM 2.5 in the air and can improve air quality.

Description

technical field [0001] The invention belongs to the field of roads, and relates to asphalt concrete, in particular to an asphalt concrete and its preparation method and application, which can be used to absorb and purify automobile exhaust. Background technique [0002] PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 microns in the atmosphere, also known as particulate matter that can enter the lungs. and discharged residues. PM2.5 is rich in a large number of toxic and harmful substances, which can easily cause cardiovascular and other related diseases, and cause great harm to people's health and living environment. The purification treatment of PM2.5 has attracted widespread attention from the whole society. In recent years, with the sharp increase in the number of motor vehicles in my country, pollutants such as carbon monoxide, nitrogen dioxide, hydrocarbons, and photochemical smog emitted by motor vehicles have become the main source of PM2...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B18/12C04B14/04
CPCY02W30/91
Inventor 王朝辉封栋杰李振霞高志伟郭滕滕蒋婷婷郑晨
Owner CHANGAN UNIV
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