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Super-porous concrete drains 4,000 litres of water in a minute

UK building materials company Tarmac has developed a new kind of concrete that instantly soaks up thousands of litres of water.

It is aimed at preventing flooding as well as saving water by cycling it back into the ground.

Gizmodo reports that the super-porous concrete, called Tarmac Topmix Permeable, is designed to remove storm and floodwater from parking lots, driveways, pavements, and other surfaces

The only problem is that it is only suitable for warmer climates. If the water freeze’s the system is ruined.

The company says the material works by having a high void content – the empty spaces in the aggregate – of between 20-35% that allows surface water to drain through into the sub-strata and dissipate naturally.

Bill Condie

Bill Condie

Bill Condie is a science journalist based in Adelaide, Australia.

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