WebPervious concrete allows the water to flow through it. The permeability of concrete depends upon the percentage of voids in the concrete, and the size of voids. Typically, 15-25% voids are achieved in hardened permeable concrete. The flow rates of pervious concrete are approximately 480 in./hr (200 L/m2/min). WebSep 21, 2008 · There are also steps that can be taken when placing pervious concrete in colder climates with longer and greater number of freeze-thaw cycles. The following precautions are recommended to enhance the freeze-thaw resistance of pervious concrete: * Use an 8-inch- to 24-inch-thick layer of clean aggregate base below the pervious concrete.
Pervious concrete - Wikipedia
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WebMay 25, 2024 · Following this, the prospect of porous concrete (PC), as a combined plant-growth substrate and structural layer in a novel extensive hydroponic green roof (EHGR) design is proposed, through a compilation and analysis of recent studies reporting the feasibility of this construction material for different applications. http://azsustainability.com/2008/09/21/pervious-concrete-reducing-the-heat-island-effect-one-parking-lot-at-a-time/ WebApr 5, 2024 · The porosity in pervious concrete is created by the little or no fine aggregate and the use of coarse aggregate either single sized or in combination to allow relatively low particle packing. Typically, the volume of aggregates in pervious concrete is about 50–65% compared to conventional concrete, which is about 60–75%. cs3 file