In the present investigation a rational mix design is established and self compactability testing methods have been carried out from the view point of making it a standard concrete by using   mineral admixtures like micro silica and fly ash for imparting High Strength Self Compacting Concrete. The  flow properties of resulting concrete is characterized in the fresh state by methods used for Self compacting concrete, such as Slump-flow, V-funnel and L- box tests respectively. Further the mechanical properties compressive strength, split tensile strength and flexural strength of concrete are examined for High Strength Self Compacting Concrete mix of grade M100.