EXPERIMENTAL STUDY ON STRENGTH CHARACTERISTICS OF CONCRETE OBTAINED BY PARTIAL REPLACEMENT OF CEMENTWITH FLY ASH, SILICA FUME &GGBS

Abstract

Concrete is the most used construction material in the civil engineering and it is the world’s most consumable
product next to water. The Ordinary Portland Cement (OPC) is one of the main ingredients used for the production of
concrete. Unfortunately, production of cement involves emission of large amount of carbon dioxide gas into the
atmosphere, a major contributor for the greenhouse effect and global warming. Large scale production of cement is
causing environmental problems. Many efforts are being made to reduce the use of Portland cement in construction.
These efforts include the utilization of supplementary cementitious materials in place of Portland cement. In this present
work cement has been replaced with Fly ash (FA), Silica fume (SF) & GGBS by the weight of cement by keeping constant
percentages of cement at 50% and SF at 10% for M30 mix. The properties studied are 7 days & 28 days Compressive
strength, Split tensile strength and Flexural strength and compared with the conventional concrete by maintaining a
water-cement ratio of 0.45 for each mix. The results indicate that the incorporation of various cementitious materials (FA,
SF & GGBS) in concrete rendered less strength when compared to conventional concrete. The individual results of mix
M-3 (OPC 50%, SF 10%, FA 10% & GGBS 30%) & mix M-4 (OPC 50%, SF 10%, FA 15% & GGBS 25%) have achieved
M30standards.