Long Term Service Performance and Life-cycle Cost of Interlocking Block Pavement

Abstract

 To promote the application of interlocking blocks to road pavement, the authors examined performance of existing interlocking block pavements at 50 locations on roadways which have been in service for ten years or more in Japan. The pavements were found in good serviceable condition at approximately 94% sites, and repair was needed at only about ４% sites. With repair conditions determined based on these results, 40-year life-cycle costs of interlocking block paving were estimated for normal roadway Class N₃. The examination results revealed that the interlocking block paving had lower life-cycle costs as compared to asphalt paving.