Abstract: The art of knowledge of basalt fiber, it is relatively new material. Basalt fiber is a high performance non-metallic fiber made from basalt rock melted at high temperature. Basalt fiber reinforced concrete is more characteristics such as good fire resistance, light weight, brown in color and strength. In this study trial test for concrete with basalt fiber and without basalt fiber are conducted to show the difference between in compressive strength and split tensile strength by using concrete cubes of size 150mmx150mmx150mm and concrete cylinders of size 150mm diameter and 300mm height. .In this study the basalt fiber having length 12mm are used. Adding basalt fiber in concrete with different percentages of coarse aggregate (0%, 1%, 2%, and 3%) and partially replacement of cement with silica fume with different percentages (0%, 2%, 4%, and 6%).

Keywords: Concrete, Portland cement, Basalt fiber, Silica fume, Mechanical properties.

| DOI: 10.17148/IARJSET.2023.10809