Pervious concrete, also referred to as porous concrete, is a special type of concrete, and its main function is to facilitate water evacuation, mainly from precipitation.
It has been successfully used for sports courts, terraces, parking lots, residential roads, etc.
Pervious concrete contains very little fine aggregate and has plastic consistency. It is lighter than conventional concrete, with compressive strengths of up to 25 MPa.
Moreover, it is perfectly compatible with all surface treatments, and is primarily being used to pave sports tracks.
Placement should be continuous, and spreading and strike-off should be rapid. Excessive compaction of pervious concrete results in lower porosity (and thus lower permeability), so special care must be taken.