STUDY ON THE INTER-SLIP CAUSED BY PAVEMENT DRIVING TEST SITE EXAMINATION OF THE CAUSE

Abstract

 At the Pavement Driving Laboratory of the PWRI, damage caused by slippage was considered to be interlayer slip. Therefore, the cause of inter-slip was investigated. For the investigation, a tensile adhesion test, a shear test, and a visual inspection of the cut surface were performed in order to investigate the adhesion state of the surface base layer. As a result, the cause of the inter-slip was peeling due to water entering between the surface layer and the base layer, and the fact that the tack coat was not sprinkled between the surface and base layers resulted in poor adhesion and early damage. It seems to be the cause.