In this study, the compressive strength properties and sulphate attack of mortar and concrete using silica waste as fine aggregate were evaluated. The mortar and concrete mixtures prepared with different levels of silica sand were used to partially replace sand. The cement content was kept constant for all mixtures. The cement mortar and concrete were prepared with 0% to 100% by weight of silica sand, the corresponding water-to-binder ratio (w/b) of 0.5 was considered for cement mortar and 0.45 was considered for concrete. Cement mortar mixes developed 28 days compressive strength which ranges from 49.77 MPa to 18.77 MPa and sulphate attack values ranges from 47.52 MPa to 28.69 MPa. The results indicate that the properties of the cement mortar made from silica sand as partial replacement of fine aggregate showed only a marginal increase in strength. The feasibility of utilizing the silica sand in the production of concrete and mortar has been demonstrated.
