Compound modified asphalt concrete

A technology of compound modified asphalt and concrete, applied in the field of road material engineering, can solve the problems of aggravating aging, shortening the service life of the road surface, increasing the contact area, etc., and achieves the effects of improving low temperature performance, improving performance and good road performance.

Inactive Publication Date: 2015-02-18
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, this kind of open-graded porous asphalt concrete pavement, as the surface layer, is exposed to the natural environment and traffic conditions, and is affected by factors such as sunshine, water, temperature changes, and traffic loads throughout the year, and because its porosity is as high as More than 20%, the contact area between the interior of the pavement structure and the natural environment is greatly increased, water forms a network flow in the gaps, and the ultraviolet rays are more intense, which aggravates the aging phenomenon and seriously shortens the service life of the pavement

Method used

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  • Compound modified asphalt concrete

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Effect test

Embodiment 1

[0024] The composite modified asphalt concrete in this embodiment is made of the following raw materials in parts by weight: 100 parts of mineral aggregate, 3 parts of asphalt, 0.05 part of chlorinated polyethylene, 0.2 part of aliphatic polyurethane resin, 0.075 part of serpentine, halloysite 0.15 part, 0.001 part of coupling agent; The mineral material adopted in this embodiment is AC-13 type mineral material, and the coupling agent adopted is JL-G02FX type amino-terminated polyol ester coupling agent, and the asphalt adopted It is SBS modified asphalt.

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

[0026] Step 1. Preparation of composite modifier: Weigh and dry serpentine and halloysite, add the dried serpentine and halloysite into a high-speed mixer, and then add coupling agent. Mixed for 12min under the condition to obtain composite modifier;

[0027] Step 2. Prepare modified asphalt:...

Embodiment 2

[0030] The composite modified asphalt concrete in this embodiment is made of the following raw materials in parts by weight: 100 parts of mineral aggregate, 5 parts of asphalt, 0.12 part of chlorinated polyethylene, 1.0 part of aliphatic polyurethane resin, 0.3 part of serpentine, halloysite 0.6 part, 0.018 part of coupling agent; The ore material that present embodiment adopts is AC-13 type ore material, and the coupling agent that adopts is JL-G02FX type amino-terminated polyol ester coupling agent, and the bitumen that adopts It is SBS modified asphalt.

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

[0032] Step 1. Preparation of composite modifier: Weigh and dry serpentine and halloysite, add the dried serpentine and halloysite into a high-speed mixer, and then add coupling agent. Mixed for 15min under the condition to obtain composite modifier;

[0033] Step 2. Prepare modified asphalt...

Embodiment 3

[0036] The composite modified asphalt concrete in this embodiment is made of the following raw materials in parts by weight: 100 parts of mineral aggregate, 7 parts of asphalt, 0.15 part of chlorinated polyethylene, 1.5 parts of aliphatic polyurethane resin, 1 part of serpentine, halloysite 1.5 parts, 0.04 part of coupling agent; The mineral material adopted in this embodiment is AC-13 type mineral material, and the coupling agent adopted is JL-G02FX type amino-terminated polyol ester coupling agent, and the asphalt adopted It is SBS modified asphalt.

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

[0038] Step 1. Preparation of composite modifier: Weigh and dry serpentine and halloysite, add the dried serpentine and halloysite into a high-speed mixer, and then add coupling agent. Mix for 10 minutes under the condition to obtain composite modifier;

[0039] Step 2. Prepare modified asphalt: ...

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Abstract

The invention provides compound modified asphalt concrete which is characterized by being prepared from the following raw materials in parts by weight: 100 parts of mineral aggregate, 3-7 parts of asphalt, 0.05-0.15 part of chlorinated polyethylene, 0.2-1.5 parts of aliphatic polyurethane resin, 0.075-1 part of serpentine, 0.15-1.5 parts of halloysite and 0.001-0.04 part of a coupling agent. The compound modified asphalt concrete provided by the invention is remarkably improved in noise reduction coefficient, has excellent pavement performance, is simple in preparation technology, has non-poisonous and harmless raw materials and has great social benefits for improving the pavement performance of asphalt and protecting the environment.

Description

technical field [0001] The invention belongs to the technical field of road material engineering, and in particular relates to a composite modified asphalt concrete. Background technique [0002] In recent years, with the rapid development of my country's high-grade highway construction scale, the speed of vehicles is increasing, the traffic volume is also increasing, and the impact of traffic noise is becoming increasingly prominent. Noise has caused public nuisance to the residents along the line, and even developed into a wide range of social problems. Reducing the noise of automobile driving has become one of the main ways to control environmental pollution. Therefore, open-graded porous asphalt concrete came into being. According to research reports, open-graded porous asphalt concrete pavement reduces noise by 4-6dB compared to densely-graded asphalt concrete pavement. [0003] However, this kind of open-graded porous asphalt concrete pavement, as the surface layer, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B24/10C04B24/26C04B24/12
Inventor 王朝辉郭滕滕陈森高志伟陈姣蒋婷婷
Owner CHANGAN UNIV
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