Study on Strength, Permeability and Micro-structure of Pervious Concrete Blended with Metakaolin

Pervious concrete is a developing construction material used for sustainable solutions which helps restore the groundwater level based on its draining ability. The existing research studies address strength and permeability of pervious-concrete materials only limited data available microstructural characteristics pervious concrete. In this study, characteristic analysis was carried out at micro-and macrolevels to identify behaviour using three aggregate gradations. To attain wide pore network in concrete, fine aggregates were not added mixes metakaolin 5% intervals up 20% cement. At macro-level, strength, porosity tested micro-level, XRD, FTIR, SEM EDAX analyses with metakaolin. maximum achieved 4.75-9.5 mm size mix 10% addition Micro-structural revealed that significantly reduces anhydrous calcium hydroxide. A significant performance more than 1 cm/s attained most due high permeability. Hence, considered as alternative can environmental problems. KEYWORDS: Porosity, Permeability, Metakaolin, Micro-structure.