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A recycled asphalt mixture for the upper layer of asphalt pavement

A technology of recycled asphalt and asphalt pavement, which is applied in the direction of roads, roads, on-site paved coagulation pavements, etc., can solve the problems of unfavorable green cycle and sustainable development of the road transportation industry, stacking treatment costs, environmental pollution, etc., to reduce pollution and the great waste of resources, the effect of reducing the amount of asphalt and reducing the amount of asphalt

Inactive Publication Date: 2016-01-06
XIAN HIGHWAY INST +1
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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 recycled asphalt mixture for the upper layer of asphalt pavement
  • A recycled asphalt mixture for the upper layer of asphalt pavement
  • A recycled asphalt mixture for the upper layer of asphalt pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Use the recycled asphalt mixture of the present invention to prepare the upper layer according to the gradation AC-13, wherein, 100 parts of aggregate, Zhonghai 90 ＃ -A base asphalt 4 parts.

[0022] 100 parts of aggregates are made of the following raw materials in mass ratio: 15 parts of new aggregates of 10mm to 20mm, 36 parts of new aggregates of 5mm to 10mm, 22 parts of new aggregates of 3mm to 5mm, 21 parts of new aggregates of 0mm to 3mm Separation of recycled aggregates, 6 parts of mineral powder.

[0023] The method of preparing the upper course with the regenerated asphalt mixture according to the gradation AC-13 of the present invention is the same as that of Comparative Example 1.

[0024] The performance test was carried out on the upper layer prepared separately from the common asphalt mixture of Comparative Example 1 and the recycled asphalt mixture of Example 1, and the results are shown in the following table.

[0025]

[0026]

[0027] It can b...

Embodiment 2

[0033] The upper layer is prepared according to the gradation AC-13 with the regenerated asphalt mixture of the present invention, wherein 100 parts of aggregate and 3.6 parts of SBS modified asphalt.

[0034] 100 parts of aggregates are made of the following raw materials in mass ratio: 22 parts of new aggregates of 10mm-20mm, 35 parts of new aggregates of 5mm-10mm, 14 parts of new aggregates of 3mm-5mm, 24 parts of new aggregates of 0mm-3mm Separation of recycled aggregates, 5 parts of mineral powder.

[0035] The method of preparing the upper course with the regenerated asphalt mixture according to the gradation AC-13 of the present invention is the same as that of Comparative Example 1.

[0036] The performance test was carried out on the upper layer prepared separately from the ordinary asphalt mixture of Comparative Example 2 and the recycled asphalt mixture of Example 2, and the results are shown in the following table.

[0037]

[0038] It can be seen from the tabl...

Embodiment 3

[0044] The upper layer was prepared according to the gradation AC-13 with the regenerated asphalt mixture of the present invention, wherein 100 parts of aggregate and 3.8 parts of SBS modified asphalt.

[0045] 100 parts of aggregates are made of the following raw materials in mass ratio: 22 parts of new aggregates of 10mm-20mm, 38 parts of new aggregates of 5mm-10mm, 13 parts of new aggregates of 3mm-5mm, 23 parts of new aggregates of 0mm-3mm Separation of recycled aggregates, 4 parts of mineral powder.

[0046] The method of preparing the upper course with the regenerated asphalt mixture according to the gradation AC-13 of the present invention is the same as that of Comparative Example 1.

[0047] The performance test was carried out on the upper layer prepared separately from the ordinary asphalt mixture of Comparative Example 3 and the recycled asphalt mixture of Example 3, and the results are shown in the following table.

[0048]

[0049]

[0050] It can be seen ...

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Abstract

The invention discloses a recycled asphalt mixture for an upper surface layer of an asphalt pavement. The asphalt mixture comprises the following raw materials in parts by mass: 3.5-4.2 parts of asphalt and 100 parts of aggregate, wherein 100 parts of aggregate comprises the following raw materials in parts by mass: 10-30 parts of new aggregate with the grain diameter of 10-20mm, 20-40 parts of new aggregate with the grain diameter of 5-10mm, 5-35 parts of new aggregate with the grain diameter of 3-5mm, 15-30 parts of separated recycled aggregate with the grain diameter of 0-3mm, and 4-6 parts of mineral powder. According to the asphalt mixture, the waste asphalt mixture is applied in a highway material again, so that petroleum and a mineral aggregate are recycled again, environmental pollution and great resource waste due to waste accumulation are reduced, and green, cyclic and sustainable development of the highway traffic industry is facilitated.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, in particular to a regenerated asphalt mixture used for the upper layer of asphalt pavement, and the regenerated asphalt mixture contains recycled waste and old asphalt pavement materials. Background technique [0002] With the rapid development of the national economy, the mileage of expressways in my country has increased rapidly. By the end of 2010, the total mileage of highway construction in my country exceeded 4 million kilometers, and the expressway was 74,000 kilometers. However, the roads built after the 1990s have entered the period of major and medium repairs. According to the average design life of asphalt pavement in my country, it is about 10 years. From now on, about 12% of 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...

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
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