Microsilica is A Highly Pozzolanic Material That Is Used To Enhance Mechanical And Durability Properties Of Concrete. It May Be Added Directly To Concrete As An Individual Ingredient Or In A Blend Of Portland Cement And Silica Fume. Initial Use Of Silica Fume In Concrete Was Mostly For Cement Replacement, Along With Water-reducing Admixtures (wras). Eventually, The Availability Of High- Range Water - reducing Admixtures (Hrwras, Often Referred To As Super plasticizers) Allowed New Possibilities For Use Of Silica Fume To Produce High Levels Of Performance.
