Modified asphalt concrete capable of adsorbing carbon dioxide

A technology for adsorbing carbon dioxide and modifying asphalt, used in the field of asphalt concrete and modified asphalt concrete. sexual effect

Active Publication Date: 2016-04-06
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, asphalt pavement is subjected to complex effects of vehicle load and environmental factors during use, and is still prone to rutting, cracking and other damage phenomena, and its durability is generally poor. Therefore, the research and development of high-performance modified asphalt concrete is still an urgent task in the road field. problem to be solved

Method used

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  • Modified asphalt concrete capable of adsorbing carbon dioxide
  • Modified asphalt concrete capable of adsorbing carbon dioxide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment provides a modified asphalt concrete capable of absorbing carbon dioxide, which is made of the following raw materials in parts by weight: 100 parts of ore material, 4.0 parts of asphalt, 0.4 part of ferropyroxene, 0.2 part of chlorite powder, and 0.01 part of nepheline powder 0.15 parts of dioctyl terephthalate, 0.04 parts of tert-butyl-o-acetyl citrate, 0.075 parts of fatty acid polyoxyethylene methyl ether, and 0.01 parts of N,N'-ethylene bisstearamide. The mineral material gradation type is AC-13 type. Described asphalt is road petroleum asphalt.

[0025] The preparation method of the present embodiment modified asphalt concrete comprises the following steps:

[0026] Step 1. Mix nepheline powder and calcium ferropyroxene powder evenly, add them into the ethanol solution with a mass percentage concentration of 20%, add fatty acid polyoxyethylene methyl ether after manual stirring for 15 minutes, and use a high-speed shearing machine to cut at 300r / m...

Embodiment 2

[0030] This embodiment provides a modified asphalt concrete capable of absorbing carbon dioxide, which is made of the following raw materials in parts by weight: 100 parts of ore material, 9.0 parts of asphalt, 2.4 parts of ferropyroxene, 2.0 parts of chlorite powder, and 0.05 parts of nepheline powder 1.0 part of dioctyl terephthalate, 0.2 part of tert-butyl-o-acetyl citrate, 0.5 part of fatty acid polyoxyethylene methyl ether, and 0.06 part of N,N'-ethylene bisstearamide. The mineral material gradation type is AC-13 type. The pitch is coal tar pitch.

[0031] The preparation method of the present embodiment modified asphalt concrete comprises the following steps:

[0032] Step 1. Mix nepheline powder and calcium ferropyroxene powder evenly, add them into the ethanol solution with a concentration of 30% by mass, stir manually for 15 minutes, add fatty acid polyoxyethylene methyl ether, and use a high-speed shearing machine to cut at 400r / min Stir at high speed for 20min, th...

Embodiment 3

[0036] This embodiment provides a modified asphalt concrete capable of absorbing carbon dioxide, which is made of the following raw materials in parts by weight: 100 parts of ore material, 6.0 parts of asphalt, 1.5 parts of ferropyroxene, 1.0 part of chlorite powder, and 0.03 parts of nepheline powder 0.5 part of dioctyl terephthalate, 0.15 part of tert-butyl-o-acetyl citrate, 0.2 part of fatty acid polyoxyethylene methyl ether, and 0.03 part of N,N'-ethylene bisstearamide. The mineral material gradation type is AC-13 type. The asphalt is SBS modified asphalt.

[0037] The preparation method of the present embodiment modified asphalt concrete comprises the following steps:

[0038] Step 1. Mix nepheline powder and calcium ferropyroxene powder evenly, add them into the ethanol solution with a concentration of 30% by mass, stir manually for 15 minutes, add fatty acid polyoxyethylene methyl ether, and use a high-speed shearing machine to cut at 400r / min Stir at high speed for 2...

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Abstract

The invention provides modified asphalt concrete capable of adsorbing carbon dioxide. The modified asphalt concrete is prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 4.0-9.0 parts of asphalt, 0.4-2.4 parts of hedenbergite powder, 0.2-2.0 parts of chlorite powder, 0.01-0.05 part of nephelite powder, 0.15-1.0 part of dioctyl terephthalate, 0.04-0.2 part of tert-butyl-acetyl citrate, 0.075-0.5 part of a surfactant and 0.01-0.06 part of a dispersant. As tert-butyl-acetyl citrate has excellent cold resistance and water stability, and a layer of dense metal oxide is formed on the surface of nephelite powder, the modified asphalt concrete has favorable corrosion resistance. Meanwhile, the modified asphalt concrete has good dispersity, can play the roles of dispersion and activation together with the surfactant (FMEE), and can effectively improve the bonding strength of modified powder and asphalt. As the compound modified powder is added into the asphalt concrete, the low-temperature crack resistance, the water damage resistance and the corrosion resistance of the asphalt concrete are effectively improved.

Description

technical field [0001] The invention belongs to the field of road engineering materials and relates to asphalt concrete, in particular to a modified asphalt concrete capable of absorbing carbon dioxide. Background technique [0002] With the development of road construction in our country, asphalt pavement has become more and more widely used in our country because of its short construction period, no joints, comfortable driving, low noise, simple and convenient maintenance and repair, and has gradually become the mainstream form of road construction in our country. However, at present, asphalt pavement is subjected to complex effects of vehicle load and environmental factors during use, and is still prone to rutting, cracking and other damage phenomena, and its durability is generally poor. Therefore, the research and development of high-performance modified asphalt concrete is still an urgent task in the road field. Problems to be solved. [0003] In addition, as a major ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
Inventor 王朝辉郭瑾高志伟陈森王新岐陈渊召李振霞
Owner CHANGAN UNIV
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