The research of non-nuclear density gauge on the detection of airport asphalt pavement surface

摘要

To ensure the asphalt pavement construction process controls the degree of compaction to meet the design requirements, reducing late detection of road surface drill core damage. Using non-nuclear density gauge the density testing, and with the translation of core drilling to test the degree of compaction density and comparative analysis of the data, and then study the dynamic control for field calibration after compaction degree variation with rolled several times, non-nuclear density gauge summary control accuracy at the time of detection of the degree of compaction of asphalt surface and generating an error. The test results show that non-nuclear density gauge must be for different structural layer, grading types and different materials, combined with core drilling method to test the value of a reasonable calibration, the calibration also proposed modest increase in the number of 10 to 15 points, in order to reduce errors and test site selection error to precision control in less than 2%. Studied the conversion between non-nuclear density gauge and water weight method to test the degree of compaction between the non-nuclear density gauge is effectively applied across the country level surface layer of asphalt compaction scene detection to provide evidence.