Pervious concrete. No doubt you've heard of it and ... aggregates smaller than 3/8 inch and the use of crushed angular material in many markets. These finer aggregates create a less coarse looking ...

An curved arrow pointing right. Tarmac has created Topmix Permeable, a porous concrete that allows rain water to flow though it. Up to 880 gallons of water can trickle through Topmix, which could ...