IMPROVEMENT OF DAILY INSPECTION METHOD OF PAVEMENT ON EXPRESSWAY AND UTILIZATION TO REPAIR PLAN

Abstract

 Central Nippon Expressway Company regularly conducts visual surveys of pavement in daily inspection of road structures. As the survey is conducted by multiple inspectors, the inspectors may have different report contents even if they look at the same road surface deformation. In addition, visual survey results are not always used for planning of large-scale repair such as overlay after scalification. In order to make effective utilization of daily inspections, the authors investigated the current state of visual surveys, extracted issues, and considered improvement measures. As a result, it was confirmed that inspectors differed in terms of reporting method when damage occurred complexly and the language for explaining the outline of damage. This report reports improvement measures for those problems and how to use visual survey for large-scale repair plan.