CONSIDERATION OF THE TOTAL COSTS FOR CONSTRUCTION AND MAINTENANCE OF PAVEMENTS ON SOFT GROUND BASED ON TEST ROAD PERFORMANCE

Abstract

This paper describes results of test road including ten kinds of different types of pavement on soft clay ground. The purpose is to find a reasonable method for pavement on a highly compressive clay ground, where engineers often encounter a big differential settlement between the pavement and pile-supported structure such as a box culvert. Based on the observed settlements, final settlements of each pavements are predicted. Construction costs and the maintenance costs are estimated to evaluate the total costs. Discussion based on these costs leads to a conclusion that the total cost could be the lowest for a high grade pavement compared with a conventional low grade pavement.