Experimental Study of High Strength Concrete Using Admixture Metakaolin (MKA)

High-strength concrete (HSC) is now widely used in the construction industry all over the world. Mix design is a process of choosing the mixture of ingredients necessary to meet expected properties of fresh and hardened concrete. The fine aggregate should filled all the voids in the coarse aggregate, and the cement paste should fulfill all the voids in the fine aggregate, according to the principle. Concrete is stronger because the aggregate has less voids. Trial and error can be used to determine the percentage of fine to coarse aggregate that provides the maximum weight of combined aggregate. Choosing the right proportions of traditional concrete ingredients (cement, sand, and aggregate) as well as the required inclusions of Chemical admixture (one or more) and Mineral admixture (one or more) can be difficult when designing high strength concrete (grades M 65 and above) (one or more). Mineral admixtures in concrete improve not only the strength but also the longevity of the concrete. The aim of this study is to develop a design mix for high strength concrete with a distinctive compressive strength of 65 N/mm2 in accordance with IS 456:2000 and IS 10262:2019. High strength concrete can be made with a low water to cementious ratio. The compressive strength are investigating finding the optimum use of mineral admixture Metakaolin (MKA) of levels 10,12.5,15,17.5 and 20 % at 7 days and 28 days of curing..