Application Research on Asphalt Layer Compaction Quality Based on Ground Penetrating Radar
Aiming to study the assessment method of asphalt surface layer compaction quality,the compaction parameters were obtained by continuously collecting the dielectric constant of the asphalt top layer of SMA-13 based on ground penetrating radar technology,and the compaction interval and coefficient of variation were used as the evaluation indexes of the compaction degree and homogeneity.By analyzing the influence of environmental humidity on radar detection accuracy,the influence of out-liers was reduced through data stability correction,and the core sample calibration method was intro-duced to improve the accuracy of compaction degree prediction.The analysis of engineering examples shows that the ground penetrating radar technology can effectively evaluate the compaction quality of asphalt surface layer,and the unmanned equipment milling performs better in compaction uniformity,with a lower coefficient of variation.The compaction degree has certain deficiencies in the beginning and end positions of construction,and the compaction uniformity between different lanes shows obvi-ous differences,consistent with the actual conditions on site.
万方数据
维普
