• ASTHA VERMA

In this research paper, the effect of replacing cement with silica fume on the compressive strength of M30 grade concrete was investigated. Silica fume, a highly pozzolanic material obtained as a byproduct of silicon and ferrosilicon alloy production, was used as a partial replacement of cement at different levels ranging from 5% to 20 by weight. Concrete cubes were cast and tested for compressive strength at curing ages of 7 and 14 days. The results showed that the addition of silica fume improved the compressive strength of M30 grade concrete, with the highest increase observed at the 15% replacement level. The improvement was most significant at early curing ages, attributed to the pozzolanic reaction of silica fume that enhances hydration and results in denser and stronger concrete. The research also evaluated the effect of silica fume on other properties such as workability, water absorption, and porosity, and found slight reductions in workability but improved durability and resistance to permeability in silica fume-blended concrete. The results suggest that silica fume can be effectively used as a partial replacement of cement in M30 grade concrete to enhance its compressive strength and durability, with the optimum replacement level depending on local factors and conditions

Compressive strength, Concrete, Silica fume, Partial replacement, M30 grade

"Compressive Strength of Concrete by Replacing Cement with Silica Fume for M30 Grade", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 4, page no.o22-o27, April-2024, Available :http://www.jetir.org/papers/JETIR2404F04.pdf

"Compressive Strength of Concrete by Replacing Cement with Silica Fume for M30 Grade", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 4, page no. ppo22-o27, April-2024, Available at : http://www.jetir.org/papers/JETIR2404F04.pdf