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A kind of recycled asphalt mixture for the middle layer of asphalt pavement

A technology of asphalt pavement and recycled asphalt, which is applied in the direction of roads, roads, and on-site coagulation pavement, etc., can solve the problems of unfavorable green cycle sustainable development of the road transportation industry, stacking treatment costs, resource waste, etc., and reduce pollution. And the great waste of resources, the effect of reducing consumption and high utilization rate

Active Publication Date: 2016-03-23
XIAN HIGHWAY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the waste asphalt concrete is not effectively utilized, its stacking will also bring costs, and cause environmental pollution and a great waste of resources, which is not conducive to the sustainable development of the green cycle of the road transportation industry

Method used

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  • A kind of recycled asphalt mixture for the middle layer of asphalt pavement
  • A kind of recycled asphalt mixture for the middle layer of asphalt pavement
  • A kind of recycled asphalt mixture for the middle layer of asphalt pavement

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Use the recycled asphalt mixture of the present invention to prepare the middle layer according to the gradation AC-16, wherein, 100 parts of aggregate, Zhonghai 90 ＃ -A base asphalt 3.5 parts.

[0022] 100 parts of aggregates are made of the following mass ratio raw materials: 15 parts of new aggregates of 10mm to 20mm, 30 parts of new aggregates of 5mm to 15mm, 6 parts of new aggregates of 5mm to 10mm, and 19 parts of new aggregates of 3mm to 5mm New aggregate, 24 parts of 0mm ~ 3mm separated recycled aggregate, 6 parts of mineral powder.

[0023] The method of preparing the intermediate layer according to the gradation AC-16 with the recycled asphalt mixture of the present invention is the same as that of the comparative example.

Embodiment 2

[0025] Use the recycled asphalt mixture of the present invention to prepare the middle layer according to the gradation AC-16, wherein, 100 parts of aggregate, Zhonghai 90 ＃ -A base asphalt 4.0 parts.

[0026] 100 parts of aggregates are made of the following mass ratio raw materials: 13 parts of new aggregates of 10mm to 20mm, 32 parts of new aggregates of 5mm to 15mm, 10 parts of new aggregates of 5mm to 10mm, and 9 parts of new aggregates of 3mm to 5mm New aggregate, 30 parts of 0mm ~ 3mm separated recycled aggregate, 5 parts of mineral powder.

[0027] The method of preparing the intermediate layer according to the gradation AC-16 with the recycled asphalt mixture of the present invention is the same as that of the comparative example.

Embodiment 3

[0029] Use the recycled asphalt mixture of the present invention to prepare the middle layer according to the gradation AC-16, wherein, 100 parts of aggregate, Zhonghai 90 ＃ -A base asphalt 3.3 parts.

[0030] 100 parts of aggregates are made of the following mass ratio raw materials: 19 parts of new aggregates of 10mm to 20mm, 26 parts of new aggregates of 5mm to 15mm, 18 parts of new aggregates of 5mm to 10mm, and 15 parts of new aggregates of 3mm to 5mm New aggregate, 18 parts of 0mm ~ 3mm separated recycled aggregate, 4 parts of mineral powder.

[0031] The method of preparing the intermediate layer according to the gradation AC-16 with the recycled asphalt mixture of the present invention is the same as that of the comparative example.

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Abstract

The invention discloses a recycled asphalt mixture used for a middle layer of an asphalt pavement. The recycled asphalt mixture comprises 3.0-4.8 parts of asphalt and 100 parts of aggregates by mass, wherein the 100 parts of aggregates comprise the following raw materials in mass part: 10-20 parts of new aggregates with particle size of 10 mm -20 mm, 20-40 parts of new aggregates with particle size of 5 mm - 15 mm, 5-20 parts of new aggregates with particle size of 5 mm - 10 mm, 5-20 parts of new aggregates with particle size of 3 mm - 5 mm, 10-30 parts of separation recycled aggregates with particle size of 0 mm - 3 mm, and 4-6 parts of mineral powder. According to the invention, waste asphalt is reused as a road material, so that reuse of a petroleum material is realized, pollution to the environment caused by waste material accumulation and great waste of resources are reduced, and environmentally-friendly circulatory sustainable development of the road traffic industry is facilitated.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, and in particular relates to a regenerated asphalt mixture used for the middle layer of asphalt pavement. The regenerated asphalt mixture contains recycled waste and old asphalt pavement materials. Background technique [0002] With the arrival of the major and intermediate repair period of my country's highways, about 12% of the asphalt pavement needs to be repaired every year. Since the recycling technology of old asphalt mixture in my country is still in the stage of experimental development and promotion, the waste of old asphalt will reach about 2.2 million tons per year. If it can be used, it can save more than 300 million yuan in material costs every year, and this figure is based on growing at a rate of 15% per year. [0003] At present, the overhaul of asphalt pavement in my country is basically "reuse of old and new", that is, the old asphalt pavement is removed and n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/18
Inventor 徐希娟周新锋丁楚志岳卫民李娜韩微微张名成贾德生李晓娟
Owner XIAN HIGHWAY INST