Clogging evaluation of porous asphalt pavement using ground-penetrating radar

被引：8
作者：
Sui, Xin [1 ]
Wang, Siqi [2 ]
Leng, Zhen [1 ]
Yang, Bin [1 ]
Lu, Guoyang [3 ]
机构：
[1] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Hong Kong, Peoples R China
[2] Southeast Univ, Sch Transportat, Dept Rd Engn, 2 Southeast Univ Rd, Nanjing 211189, Peoples R China
[3] City Univ Hong Kong, Dept Architecture & Civil Engn, Hong Kong, Kowloon Tong, Peoples R China
来源：
MEASUREMENT | 2023年 / 216卷
关键词：
Porous asphalt pavement; Clogging; Ground -penetrating radar; Dielectric constant; Short -time Fourier transform; GPR;
D O I：
10.1016/j.measurement.2023.112939
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Clogging reduces the porosity of porous asphalt (PA) pavement, which would jeopardize its permeability, noise absorption, and skid resistance. Existing evaluating methods use in-situ cores that damage the pavement with limited coverage. This study explored the feasibility of evaluating PA pavement clogging using ground -penetrating radar (GPR). Laboratory tests were performed on porous asphalt (PA) slabs under various clog-ging degrees. The effect of antenna type and moisture on clogging evaluation were investigated. The perfor-mances of two clogging indicators were examined, including the bulk dielectric constant obtained using the time -of-flight method and time-frequency spectrograms using the short-time Fourier transform (STFT). Effectiveness of GPR-based clogging evaluation was validated by permeability tests. Results show that both indicators could effectively evaluate clogging in PA pavement. The effectivenesses of proposed indicators were verified through permeability tests. GPR surveys are suggested 72 h after rainfall in sunny days using 2 GHz air-coupled antennas.
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页数：11
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