Semi-rigid Base Asphalt Pavement Crack Identification Based on FWD Detection Technology

In this study, the fracture damage state was determined comprehensively according to the linear shape of the bending curve and the maximum bending value. The bending curve was drawn through the distance between the detection point and the crack and its bending value. This method detects the bending of both sides of the crack within a certain range, and judges the influence range and damage state of the crack according to the bending curve drawn by the distance of the detection point from the crack and its bending value. It solves the problem of inaccurate observation and judgment of the appearance of crack damage state of the existing semi-rigid base asphalt pavement, and provides scientific, accurate and economic basis for the formulation of pavement maintenance and repair program.