Experimental Investigation on Pervious concrete with Metakaolin

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Pervious concrete is a type of light weight porous concrete with no fine or with small percentage of fine aggregate. It is generally used for flatwork applications, which allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site and allowing ground water recharge. This study aims to experimentally investigate the mechanical and hydraulic properties of pervious concrete with different replacement levels of metakaolin. Pervious concrete for pavement applications having a porosity of 20-25% with cement-aggregate ratio of 1:4 and w/c ratio of 0.36 is established based on permeability, porosity and strength parameters.  Metakaolin were incorporated in pervious concrete by replacing cement at 5%, 10% and 15% by weight of cement which helps in increasing the mechanical properties of pervious concrete. The strength parameters increased about 12.24%, 23.95%, 13.97% for compressive strength, split tensile strength and flexural strength respectively for 10% metakaolin replacement and hydraulic properties decreased as the percentage of metakaolin increased.

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Aaliya Navaz
Anju Paul


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