Abstract- Porous concrete may perform worse when subjected to high rates of settling and shrinkage. The objective of this study was to use Metakaolin and rock sand to reduce voids in concrete and enhance performance. As an additional cementitious ingredient, metakaolin has been shown to be a good addition to cement concrete. The most often utilised concrete additives are those that have metakaolin as a component. Due to its widespread accessibility in our country, using metakaolin in cement concrete may have financial benefits. Metakaolin was to be substituted at a rate of 5 percent, 10 percent, 15 percent, 20 percent, and 25 percent by weight of cement. Concrete’s strength and durability are evaluated using cubes and cylinders that have been cast. In 15 percent MK-based concrete, an increase in compressive strength of 47.55 percent, 27.88 percent, and 47.52 percent was recorded over 7, 28, and 90 days, respectively.