CAVITY INSPECTION METHOD FOR PAVED ROAD

摘要

PURPOSE:To enable the inspecting of cavity under a paved road such as asphalt road in a short time. CONSTITUTION:Data under a road are collected running an under-ground radar with a pavement structure inspecting car carrying it on the road. The perimeter of a place where a cavity may be generated is surveyed with a manually operated type under ground radar device based on the results to specify the presence of cavity and a planar expance thereof. When a cavity is found, a smaller- diameter drilling is performed to take an inner circumferential wall surface with a camera. Thus, the cavity and condition under the roard surface are checked with naked eyes to determine the condition of cavity three dimensionally.