Study of Effects of Micro Silica Variation on M80 Concrete

Author : Rajesh Goyal, Anil Kumar, Ashok K. Gupta, Manik Goyal

Abstract

High performance concrete (HPC) is a novel construction material with improved properties like higher strength and longer durability compared to conventional concrete. High Strength Concrete (HSC) is a type of HPC. Appropriate use of mineral and chemical admixtures with better quality control leads to HSC. Extensive research work has also established that the addition of mineral admixtures to plain cement concrete improves its strength, durability, toughness, and post-cracking load resistance. In this paper, an attempt has been made to study the effect of micro-silica
with 0%, 5%, and 10% replacement on the compressive and flexural strengths of high strength concrete with varying water-cement ratios. It has been found that the compressive strength of concrete increases with increase in micro-silica content upto certain proportion. Moreover, micro-silica does not affect flexural strength as much as compressive strength.

Keywords: Concrete, Micro Silica