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Method of calculating the mixing amount of old material in recycled asphalt mixture

A technology of old asphalt mixture and recycled asphalt, which is applied in the field of calculation of the amount of old materials in recycled asphalt mixture, can solve the problems of imprecise calculation methods and errors, reduce human error, solve calculations, and improve accuracy sexual effect

Active Publication Date: 2018-01-05
HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING +1
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  • Abstract
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Problems solved by technology

[0009] Aiming at problems such as the imprecise calculation method of the existing old material admixture and the generation of errors, the present invention provides a calculation method of the old material admixture in recycled asphalt mixture

Method used

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  • Method of calculating the mixing amount of old material in recycled asphalt mixture
  • Method of calculating the mixing amount of old material in recycled asphalt mixture
  • Method of calculating the mixing amount of old material in recycled asphalt mixture

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Embodiment 1

[0053] The old asphalt mixture samples were taken from the section of S245 highway in Zhangbei County, Hebei Province and Huade County, Inner Mongolia. The landform environment of the road is micro-hill, which belongs to the second-class road, with a road width of 11.4m and a surface layer thickness of 9cm. The calculation method of the old material content in the recycled asphalt mixture is shown in the attached figure 1 As shown, the process is as follows:

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Abstract

The present invention relates to the field of engineering calculation method and specifically discloses a method of calculating the amount of old materials in a recycled asphalt mixture. The calculation method determines the size relationship between the setting value b of the best bitumen content and the content value a of the bitumen in the old materials, then calculates the maximum mixing amount p of the old materials in the recycled asphalt mixture, further calculates the amount m of the old asphalt and the amount n of the old aggregate to be mixed according to the maximum mixing amount pof the old materials, and finally calculates the mixing amount g of a new aggregate and the mixing amount f of a new asphalt. The calculation method can accurately, efficiently, and quickly calculatethe maximum mixing amounts of the new asphalt, the old asphalt, the new aggregate, the old aggregate, and an old asphalt mixture and ensure that the actual asphalt content of the obtained recycled asphalt mixture is theoretically equal to the optimal asphalt content to be consistent with the research and practical application.

Description

technical field [0001] The invention relates to a calculation method in the field of engineering, in particular to a calculation method for the amount of old materials in recycled asphalt mixture. Background technique [0002] At present, my country's standard "Technical Specifications for Highway Asphalt Pavement Construction" (JTG F40-2004) only requires the selection of materials, the determination of mineral material gradation, and the amount of asphalt, and has no relevant requirements for the amount of old materials. However, the "Technical Specifications for Recycling of Highway Asphalt Pavement" (JTG F41-2008) only provides the estimated calculation method of the total asphalt consumption and the estimated calculation method of new asphalt, but does not provide the calculation method of the maximum mixing amount of old materials. The dosage of raw materials is crucial to the performance of recycled asphalt mixture. At present, the calculation method of the amount of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 李印冬樊旭英王海龙李章珍李婷冀伟
Owner HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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