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Foam warm mixing recycled asphalt mixture, preparation method and performance evaluation method

A technology of recycled asphalt and mixture, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of environmental pollution, discarding, not fully utilizing the warm mix asphalt technology for energy saving and emission reduction, etc. Reach the effect of reducing energy consumption and emission, reducing preparation cost and saving resources

Inactive Publication Date: 2016-01-27
JSTI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the application process of warm mix technology, most warm mix asphalt mixtures in China still use the design method of hot mix asphalt mixture, and the advantages of energy saving and emission reduction of warm mix asphalt technology are not fully utilized.
At the same time, the old pavement materials are discarded during the renovation and maintenance of the existing old pavement, causing environmental pollution

Method used

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  • Foam warm mixing recycled asphalt mixture, preparation method and performance evaluation method
  • Foam warm mixing recycled asphalt mixture, preparation method and performance evaluation method
  • Foam warm mixing recycled asphalt mixture, preparation method and performance evaluation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Before preparing the foam warm mix recycled asphalt mixture, first prepare the following materials:

[0024] 1. Recycled old materials: 80 parts of RAP1 material (rough milling material for the lower layer of asphalt pavement, the ratio of asphalt to about 3.9%), 120 parts of RAP2 material (fine milling material for the lower layer of asphalt pavement, the ratio of asphalt to about 4.6%);

[0025] 2. New pellets: 210 parts of 1# material, 270 parts of 2# material, 70 parts of 3# material, 240 parts of 4# material, 10 parts of mineral powder;

[0026] 3. Foam-modified asphalt: 42 parts of SBS modified asphalt, 1.2 parts of foaming water, foamed asphalt production equipment to ensure maximum air pressure of 1000kPa, maximum water pressure of 1000kPa, asphalt pressure of 1000kPa, suitable for asphalt temperature of 140-200℃, should be used in a certain amount of water Under the condition of large quantity, the foamed asphalt can be produced continuously, and the quality of...

Embodiment 2

[0035] Before preparing the foam warm mix recycled asphalt mixture, first prepare the following materials:

[0036] 1. Recycled old materials: 80 parts of RAP1 material (rough milling material for the lower layer of asphalt pavement, the ratio of asphalt to about 3.9%), 120 parts of RAP2 material (fine milling material for the lower layer of asphalt pavement, the ratio of asphalt to about 4.6%);

[0037] 2. New pellets: 190 parts of 1# material, 255 parts of 2# material, 70 parts of 3# material, 270 parts of 4# material, 10 parts of mineral powder;

[0038] 3. Foam modified asphalt: 46 parts of SBS modified asphalt, 1.4 parts of foaming water, foamed asphalt production equipment to ensure maximum air pressure of 1000kPa, maximum water pressure of 1000kPa, asphalt pressure of 1000kPa, suitable for asphalt temperature of 140 ~ 200 ℃, should be used in a certain amount of water Under the condition of large quantity, the foamed asphalt can be produced continuously, and the quality...

Embodiment 3

[0047] Before preparing the foam warm mix recycled asphalt mixture, first prepare the following materials:

[0048] 1. Recycled old materials: 80 parts of RAP1 material (rough milling material for the lower layer of asphalt pavement, the ratio of asphalt to about 3.9%), 120 parts of RAP2 material (fine milling material for the lower layer of asphalt pavement, the ratio of asphalt to about 4.6%);

[0049] 2. New pellets: 175 parts of 1# material, 240 parts of 2# material, 70 parts of 3# material, 300 parts of 4# material, 10 parts of mineral powder;

[0050] 3. Foam modified asphalt: 50 parts of SBS modified asphalt, 1.5 parts of foaming water, foamed asphalt production equipment to ensure maximum air pressure 1000kPa, maximum water pressure 1000kPa, asphalt pressure 1000kPa, suitable for asphalt temperature 140 ~ 200 ℃, should be used in a certain amount of water Under the condition of large quantity, the foamed asphalt can be produced continuously, and the quality of the foamed...

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Abstract

The invention discloses a foam warm mixing recycled asphalt mixture, a preparation method and a performance evaluation method. The mixture is a mixture formed by recycled waste and a foam modified asphalt mixture. A lower milled material of an asphalt pavement is used as a raw material, no additional recycling agent is needed, the construction temperature can be reduced by 20 to 30 DEG C by utilizing foam asphalt and warm mixing technology, the energy consumption during the construction process is reduced, the resource is saved, the environment is protected, the finally prepared mixture can be reused for the lower layer of the asphalt pavement, various technical indexes can meet the requirement, and the preparation cost is reduced.

Description

technical field [0001] The invention relates to a road-use asphalt mixture, in particular to a foam warm-mix recycled asphalt mixture, a preparation method and a performance evaluation method thereof. Background technique [0002] The Ministry of Transport promulgated the Outline of Mid- and Long-term Planning for Energy Conservation in Highway and Waterway Transportation, which calls for vigorously developing a green transportation system and strengthening research and promotion of science and technology in the field of high-efficiency, environmental protection and climate-friendly transportation. In this context, warm mix asphalt technology came into being. However, in the application process of warm mix technology, most warm mix asphalt mixtures in China still use the design method of hot mix asphalt mixture, and the advantages of energy saving and emission reduction of warm mix asphalt technology have not been fully utilized. At the same time, the old pavement materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B18/16
CPCY02A30/30Y02W30/91
Inventor 郑炳锋刘伟吴春颖韦武举温肖博严金海胡兴国汪立诚潘彬高壮元
Owner JSTI GRP CO LTD
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