• Shantiaum Khatavkar
• Dr. V.G. Sayagavi
• P.J. Salunke

The incorporation of admixtures in concrete is generally to achieve economy, durability, strength and impermeability etc. Now a day’s different research have suggested that silica fume is very effective in the design and development of high performance concrete. Because of the pozzolanic nature and filling property of silica fume, the interest in adding silica fume in concrete has increased considerably. Research is also done to improve the performance of concrete by introduction of natural fibers. Here the natural fiber i.e. sisal fiber is utilized in this experiment for evaluation of compressive, tensile and flexural strength of concrete by simultaneously adding silica fume and sisal fiber as partial replacement of cement in the of grade M20 and M50. Cement is replaced by silica fume in a proportion of 10% and 15% respectively, however sisal fibers is added in proportion of 0.3%, 1%, 1.5% and 2% respectively. According to IS 516 and IS 5816 the specimens of cubes, cylinders and beams were casted and tested at the age of 7 day and 28 days to evaluate the effect of performance. Optimum results with increase in strength were found at silica fume being added at 15% and sisal fiber at a proportion of 1.5% for both M20 and M50 grade. The results obtained are in accordance with the IS codes.

Cement replacement, Sisal Fiber, Silica Fume, High performance concrete, Sustainable.

"Performance of Concrete When Cement is partially replaced with Sisal Fiber and Silica Fume", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 9, page no.236-243, September-2018, Available :http://www.jetir.org/papers/JETIR1809343.pdf

"Performance of Concrete When Cement is partially replaced with Sisal Fiber and Silica Fume", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 9, page no. pp236-243, September-2018, Available at : http://www.jetir.org/papers/JETIR1809343.pdf