 Shell Bitumen porous asphalt allows rainwater to drain through the asphalt, rather than staying on the surface. With precisely designed aggregate-binder mixture, voids are retained within the mixture sufficient to allow water to drain through but without affecting the strength and performance of the asphalt. Porous asphalt has been shown to reduce spray levels and improve road safety. >> Shell Cariphalte DA (drainage asphalt) For more information contact your Shell Bitumen sales/technical contact | 
