Stress-Strain Behaviour of Blended Cement Concrete with Fly Ash & Silica Fume

Concrete is the key material used in various types of constructions, from the flooring of a hut to a multi-storied high rise structures. Concrete is one of the versatile heterogeneous materials. With the advent of concrete civil engineering has touched highest peak of technology. It is the material of choice where strength, durability, impermeability, fire resistance and abrasion resistance are required. The main aim of the present study is to determine the compressive strength, tensile strength and stress-strain behavior of concrete mix of M30 grade, with partial replacement of cement with SILICA FUME and FLYASH. In this paper our study is mainly confined to evaluation of changes in both compressive strength and weight reduction in six different mixes of M30 grade namely conventional aggregate concrete (CAC), concrete is made by replacing of 15% of cement by Fly Ash and 5% of cement by Silica Fume (FSAC1), concrete is made by replacing of 5% of cement by Fly Ash and 15% of Silica Fume (FSAC2 ), concrete is made by 10% of cement by Fly Ash and 10% Silica fume (FSAC3). Our study includes the concept of triple blending of cement with Silica Fume and Fly Ash, this triple blend cement exploits the beneficial characteristics of both pozzolanic materials in producing a better concrete.