SOME STUDIES ON STRENGTH PROPERTIES OF CONCRETE WITH PENTA BLENDED CEMENT (MICRO- SIO2)

Cement has became an integral part of Civilization and the process of production of cement releases green house gases causing global warming and also uses precious natural resources. Pozzolanic materials play an important role to reduce the consumption of cement. The present experimental investigation study focuses on the M20 grade concrete mix was designed and cube compressive strength of 28 days is tested with partial replacement of cement at 0%, 4%, 8%, 12%, 16%, 20% using pulverized quartz powder, silica fume and slag, individually and found that optimum replacement of these materials is 16%. A study was also done with replacement of three numbers of pozzolanic materials in equal proportion in combination with varying percentages of micro-SiO2 powder at 0.5%, 1%, 1.5%, 2%, and 2.5% on 16% of cement. The study was conducted for compressive strength, split tensile strength and for flexural strength at 7 days and 28 days.