Detection and Application Evaluation of Invisible Diseases of Expressway Asphalt Pavement
Taking the asphalt pavement of Zhangji Expressway in Jiangxi Province as the research object,the three-dimensional radar was used to detect the invisible diseases of the pavement,and the state,disease type and development degree of the internal structure layer of the pavement were judged according to the image characteristics after image recognition and processing,and the internal disea-ses of the pavement were statistically evaluated.The results show that the main invisible diseases of the pavement of Zhangji Express-way are reflection cracks and poor interlayers,and a small number of road section units have local mixture segregation and block cracks,and no local segregation of the base layer is detected.Through the on-site coring verification of typical disease locations,the matching rate of 3D radar detection of invisible diseases on the pavement and the actual structural condition can reach more than95%.In pavement maintenance engineering,the use of 3D radar can effectively detect pavement invisible pavement diseases,and provide sci-entific and reasonable suggestions for the treatment of pavement diseases.
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