CONSTRUCTION AND VERIFICATION OF PAVEMENT DETERIORATION CURVE CONCERNING REPRESENTATIVE PARTS BY REGION AND CONDITION

Abstract

 In the past research, research results on the road pavement deterioration predictions are accumulated and have been used for asset management. Many of them, use probabilistic deterioration predictions to support with the uncertainty deterioration process. However, any verified research might not been found for deterioration prediction results analyzed by the actual measurement results. So, in the main research, the deterioration curve was constructed from survey results of the road surface property about representative parts in the Kanto Maintenance Area and it verified by the actual measurement results. Concretely, tendency of the selected representative parts were analyzed, and locally deteriorated parts were excluded to construct the deterioration curve. The deterioration curve was constructed by the least squares approximation (straight line, curve) and Markov equation. For the constructed deterioration curve, the consistency between predicted value and road surface property were confirmed, and the remember points were organized for construction of the pavement deterioration curve.