Abstract: Concrete is one of the important construction material used in the world of all engineering works including the infrastructure development proved that it is a cheap material and its constituents are widely available in nature. Due to widespread usage and exciting infrastructure development in all over the world, there is the shortage of natural aggregates such as fine aggregate and course aggregate. These materials are available with high cost to prevent this beautiful aggregate and course aggregate can be replaced with waste materials. In this project research, fine aggregates will be replaced by silica sand accordingly in the range of 0, 10, 15 and 20% by weight of M-25 grade concrete. Concrete mixtures were prepared, tested and compared regarding compressive, split tensile and flexural strength to the conventional concrete. These tests were carried out to evaluate the strength properties for 7, 14 and 28 days.