Effect of Supplementary Cementitious Materials Silica Fumes used as replacement of cement on Split tensile strength and Flexural strength of concrete

The concrete is a major concentration material, having most critical constituent as cement. Cement is the major binding material but the main drawback associated with the use of cement is the landfills and raw material extraction. Moreover, the use of cement is also responsible for the CO2 emission. The Supplementary cementitious material (SCM) have the ability to replace specific amount of cement without affecting the quality of concrete. The waste materials, which canbe used as SCMs like ash, silica oxide fume, ground granulated blast furnace slag, steelslag etc. Micro silica or silica fumes, a very fine non-crystalline material is very good as filler material to provide good strength. In this studya trial has been created to extend the strength of concrete by exchange cement with 0%,5%,10%,15% and 20% of Micro silica fumes in a design mix of M35and M40. The Properties like final Flexural strength, Splitting Tensile strength has been determined for various combine mixtures of materials and these values are compared with the Corresponding values of conventional concrete.