Asphalt Pavement Aging Monitoring Technology Based on Piezoelectric Effect
In this paper,the thermal aging of asphalt road is monitored by the principle of piezoelectric power generation.In this paper,a PZT-5H piezoelectric transducer with excellent performance was made,and then embedded in asphalt concrete,and the piezo-asphalt concrete specimen was placed in the air blast drying oven to study the change rule of its electrical properties in the process of thermal aging.The test results show that the power generation performance of piezoelectric transducer is increasing,and its surface force is uniform,resulting in the stability of its electrical signal output.With the increase of time,aggregate separation and cracks appear on the surface of asphalt concrete,and the structure continues to be dense.
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