Method for testing moisture distribution of asphalt mixture based on industrial computed tomography (CT)

A technology for asphalt mixture and distribution testing, which is applied in the direction of material analysis using radiation, etc., can solve the problem that the moisture distribution of asphalt mixture cannot be intuitively and accurately obtained, so as to avoid indistinguishability, improve analysis accuracy, and improve durability The effect of sex and usability
CN103558236AActive Publication Date: 2014-02-05HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2014-02-05

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Abstract

The invention discloses a method for testing the moisture distribution of an asphalt mixture based on industrial computed tomography (CT), relates to a testing method for the internal moisture distribution of the asphalt mixture, and aims to solve the problem that a moisture distribution law cannot be intuitively and accurately acquired through an existing method for testing the moisture distribution of the asphalt mixture. The method for testing the moisture distribution of the asphalt mixture comprises the following steps: fixing a clamp made of a foam material onto an industrial CT machine supporting table; covering an X-ray outlet with a metal sheet; starting an industrial CT machine; placing a dry test piece into the clamp; debugging scanning parameters of the industrial CT machine; scanning the test piece, performing image reconstruction on a scanning result through software; analyzing size parameters of the test piece; soaking the dry test piece in water; performing image reconstruction and parameter analysis on the scanning result again; and setting an addition area of a non-clearance substance as a moisture distribution area so as to complete testing of the moisture distribution of asphalt. By virtue of the testing method, the moisture distribution can be visualized, and the measurement accuracy is improved.
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Description

technical field

[0001] The invention relates to a test method for the internal moisture distribution of asphalt mixture, in particular to an industrial CT-based test and analysis method for the internal moisture distribution of asphalt mixture. Background technique

[0002] As a seamless continuous pavement, asphalt pavement has the advantages of good continuity, smooth and comfortable driving, low noise, no dust, convenient maintenance, and easy recycling, so it occupies a dominant position in the construction of high-grade highways. For example, asphalt pavement accounts for more than 90% of the highways in the United States and Japan, and about 80% of the roads in the world are asphalt pavements. With the widespread use of asphalt pavement, the problem of its early damage has become increasingly prominent. Based on extensive investigations into the problem of asphalt pavement damage, road workers have found that most of the early damage to asphalt pavements is water rela...

Claims

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