Study on infrared differential thermal non-destructive testing technology of the permeability of hot mix asphalt pavements

3rd International Conference on Advances in Energy, Environment and Chemical Engineering

能源学;生态环境科学;化学工业

Wang, Duanyi^1 ; Shi, Jicun^1,2

Department of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, China^1

Henan Gaoyuan Maintenance Technology of Highway CO. Ltd., Xinxiang, Henan, China^2

关键词: Differential thermals;    Finite element method model (FEM);    Hot mix asphalt pavements;    Non destructive testing;    Non-destructive test;    Simulated solar radiations;    Surface temperature difference;    Surface temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/69/1/012109/pdf
DOI  :  10.1088/1755-1315/69/1/012109

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In order to non-destructive test (NDT) the permeability coefficient of hot mix asphalt (HMA) pavements fast, A methodology for assessing the permeability coefficient was proposed by infrared differential thermal testing of pavement after rain. The relationship between permeability coefficient and air voids of HMA specimen deter-mined. Finite element method (FEM) models were built to calculate the surface temperature difference with different exposure time after precipitation. Simulated solar radiation source and fully saturated plate specimens were set in laboratory, tests verify that the different exposure time the specimen surface temperature difference. Infrared differential thermal detection permeable pavement hardware and corresponding software developed. Based on many test results, the evaluation index and criteria of permeability coefficient of HMA pavements tested by infrared differential thermal were developed. The results showed that: There is correlation between air voids and permeability coefficient of HMA specimen. Permeability coefficient of HMA pavements can be determined by different surface temperature at different exposure time. 9:00 am - 14:00 pm is the best time to detect permeability coefficient by infrared differential thermal NDT. Permeable asphalt pavement permeability can be achieved by infrared detector quickly and continuously, a lane testing; Per the permeable assessment criteria, in-place pavements permeability coefficients can be accurately evaluated.