基于PFWD无损检测技术的高速公路底基层级配对比评价

COMPARATIVE EVALUATION OF SUBBASE GRADATION IN EXPRESSWAY BASED ON PFWD NON-DESTRUCTIVE TESTING TECHNOLOGY

为了评价高速公路底基层级配设计的优劣性,采用两种配合比的级配,通过试验验证及试验段摊铺,采用PFWD无损检测技术分别检测两段试验段工后横纵向的均匀性,对检测数据进行对比分析,得到两种级配的优劣特点,推荐采用较粗级配,并提出离析控制方法。

By using the mixing proportion of two gradations to pave trial section after the test verification, which can evaluate the quality of the gradation design of the expressway subbase layer, the vertical and horizontal uniformity of the two gradations of test section are tested by exploiting PFWD non-destructive testing technology. It is concluded that the coarser gradation is recommended and according to which the control method of unmixing is obtained, after comparing the pros and cons of two gradations, which are gained from the comparative analysis of detection data.