Grading optimization method of waste asphalt concrete based on gray system theory

A grey system theory, asphalt concrete technology, applied in the field of materials, can solve the problems of lack of RAP particle quantification regularity conclusion, unable to directly guide the application of waste asphalt concrete, difficult to control the gradation law and so on
CN104496284BInactive Publication Date: 2016-08-17WUHAN INSTITUTE OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN INSTITUTE OF TECHNOLOGY
Publication Date
2016-08-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a waste asphalt concrete gradating optimization method based on grey system theory, belonging to the material technical field. The method includes performing grading pre-treatment of waste asphalt concrete, building virtual screen size gradation among each grade of waste asphalt concrete direct screening results and the screening results after removal of asphalt, preparing macroporous asphalt concrete under the condition of different virtual screen size gradation blending proportions, performing grey relational analysis and grey correlation degree ordering by adopting porosity deviation changes of macroporous asphalt concrete as the main behavior of the system, and proportional changes of different virtual coefficients in synthesis screening as an effective factor affecting the main behavior, and choosing the virtual screen size gradation with maximum correlation as mixture ratio design basis of actual production of recycled asphalt concrete. The method can accurately control the mixture ratio design of the recycled asphalt concrete, improve recycled asphalt concrete performance, and provide theoretical guidance for application of the waste asphalt concrete in skeleton asphalt mixture.
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Description

technical field

[0001] The invention belongs to the technical field of materials, and in particular relates to a method for optimizing the gradation of waste asphalt concrete based on gray system theory. Background technique

[0002] The scale of my country's road traffic is developing rapidly. As of 2012, the total mileage of road traffic has reached 4.238 million kilometers, and the expressway is 96,200 kilometers, both of which are in the forefront of the world. Among them, 1.81 million kilometers of roads have been in service for more than ten years, and 3.58 million kilometers of roads have been in service for more than five years. These roads have gradually been damaged to varying degrees. Hundreds of millions of tons of waste asphalt concrete (RAP) are produced; in addition, compared with the scale of road construction, my country's crude oil reserves only account for 1.2% of the world's total, and petroleum asphalt resources are scarce and of low quality, leading to a...

Claims

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