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i.idro DRAIN is an innovative concrete with high water drainage capacities and a compressive strength of more than 10 MPa. There are two types of i.idro DRAIN depending on the type of cement used. i.idro DRAIN (White version) is made up of white cement while i.idro DRAIN (Grey version) contains grey cement;both the product are available in plastic bags of 25 kg. Tests carried out according to the Standard EN 206 establishes the compressive strength of Idro Drain at a minimum of 10 MPa. The use of i.idro Drain does not require particular performance as regards environmental exposure class and workability. There is therefore no defined exposure class nor slump class.i.idro Drain combines the strength of concrete with a drainage capacity of 100 times more than that of silt and clay, thanks to a special selection of aggregate size and the choice of air entrainment agent which both increase the percentage of air content.As demonstrated through comparative tests performed by Politecnico di Milano, the excellent drainage capacity of i.idro Drain equals or even exceeds that of naturally available loose materials like sand, clay and silt, and that of traditional waterdraining asphalt pavements.The European Standard, EN 1269740 2012, describes a method to determine the in situ relative hydraulic conductivity, at specific locations, of a road surfacing that is designed to be permeable. The test measures the ability of a surfacing to drain water achieved in situ.