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Environment-friendly anti-rutting asphalt mixture and preparation method thereof

An asphalt mixture, an environmentally friendly technology, applied in the field of asphalt concrete, can solve the problems that affect the safety of the vehicle, the smoothness and service life of the road surface, easy cracking, and poor load-bearing capacity, so as to ensure the anti-rutting performance and improve the anti-rutting performance , Enhance the effect of load-bearing capacity

Active Publication Date: 2021-08-03
上海宝新特种沥青混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, although the waste asphalt pavement can meet the minimum standards for engineering use after excavation, recycling and crushing, and mixing with regenerant, its general load-bearing capacity is poor. It is prone to cracking, rutting and other phenomena, which seriously affects the safety of vehicles and the smoothness and service life of the road surface

Method used

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  • Environment-friendly anti-rutting asphalt mixture and preparation method thereof
  • Environment-friendly anti-rutting asphalt mixture and preparation method thereof
  • Environment-friendly anti-rutting asphalt mixture and preparation method thereof

Examples

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Effect test

preparation example 1

[0057] A modified recycled asphalt material, the preparation steps of which are as follows:

[0058] a. Pretreatment: After milling, crushing and sieving the waste asphalt pavement through a 10mm sieve, first heat it up to 150°C for 20 minutes, then vacuumize it under negative pressure, and freeze-dry it at 0±2°C for 5 minutes to obtain a modified precursor ;

[0059] b. Modification treatment: After mixing the modified precursor, modified liquid and regenerated agent at a weight ratio of 1:0.4:0.03, heat at 180°C for 30 minutes, and vacuumize under negative pressure to obtain modified recycled asphalt material;

[0060] The modified liquid is composed of hot melt colloid and filler in a weight ratio of 1:0.05;

[0061] The regeneration agent, the model is SMC, purchased from Shanxi Junyi Smart Transportation Technology Co., Ltd.;

[0062] The hot melt colloid is composed of saturated polyester resin, polyamide wax and polyamide imide in a weight ratio of 1:0.5:0.3;

[0063...

preparation example 2

[0065] A modified recycled asphalt material, the difference from Preparation Example 1 is that the modified precursor, modified liquid and regenerated agent in b are mixed in a weight ratio of 1:0.6:0.05.

preparation example 3

[0067] A modified recycled asphalt material, the difference from Preparation Example 1 is that the modified precursor, modified liquid and regenerated agent in b are mixed in a weight ratio of 1:0.7:0.075.

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Abstract

The invention relates to an environment-friendly anti-rutting asphalt mixture and a preparation method thereof. The environment-friendly anti-rutting asphalt mixture is prepared from the following components in parts by weight: 1200 to 1500 parts of aggregate; 100 to 200 parts of mineral powder; 120 to 150 parts of asphalt; 5 to 8 parts of a film-forming agent; 1.5 to 2.0 parts of an anti-stripping agent; 200 to 500 parts of a modified recycled asphalt material; the modified recycled asphalt material is prepared by the following steps: a, pretreatment: crushing and screening a waste asphalt pavement, heating, vacuumizing at negative pressure, and freeze-drying to prepare a modified precursor; b, modification treatment: heating and mixing the modified precursor, the modified liquid and a regenerant, and vacuumizing under negative pressure to prepare a modified regenerated asphalt material; the modification liquid is composed of a hot melt colloid and a filler; the hot melt colloid is prepared from saturated polyester resin, polyamide wax and polyamide-imide. The asphalt mixture has the advantages of environmental protection and rut resistance.

Description

technical field [0001] The application relates to the technical field of asphalt concrete, more specifically, it relates to an environment-friendly anti-rutting asphalt mixture and a preparation method thereof. Background technique [0002] With the continuous advancement of urbanization road construction, asphalt concrete is widely used due to its excellent characteristics. Asphalt concrete, commonly known as asphalt concrete, is a mixture of artificially selected aggregates and road asphalt materials mixed under certain proportions. However, with the advancement of urbanization and ruralization, road renovation will produce a large amount of waste asphalt materials, so environmentally friendly asphalt mixtures that can recycle waste asphalt materials have emerged as the times require. [0003] The environment-friendly asphalt mixture in the related art is composed of aggregate, filler, asphalt and recycled asphalt material. Regenerated asphalt material is the asphalt mix...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B20/04C04B24/04C04B24/28C04B7/02
CPCC04B28/26C04B20/04C04B24/281C04B24/045C04B7/02C04B18/12C04B24/36C04B18/16C04B20/026C04B20/023
Inventor 胡俊伟
Owner 上海宝新特种沥青混凝土有限公司