Evaluation of Porous Concrete Pavements in Japan

Porous concrete pavements were applied on a trial basis at three points on prefectural roads in Fukui, Japan. The objective was to verify their durability and serviceability as well as their behavior in snow and cold regions. Investigations were made continuously to check their serviceability and durability with lasting performance. The major parameters investigated included pavement smoothness, skid resistance, rutting and difference in elevation at the joint. Such parameters as permeability and low noise level were unique to porous concrete pavements. This paper describes the results of a follow-up survey during the three-year period since the commencement of service. The surface properties, in-situ permeability and noise level of the porous concrete pavements remained nearly unchanged from the conditions upon completion although deterioration was observed in some sections. Thus, porous concrete pavements were determined to be fully applicable to snow and cold regions.