Effect of Partial Replacement of Sand with Quarry Dust on the Compressive Strength of Sandcrete Blocks

Abstract

This paper provides the results of an experimental investigation into the effect of partial replacement of sand with quarry dust in production of sandcrete blocks using mix ratio of 1:6. Physical properties of sand and quarry dust were determined in the laboratory in accordance with BS 1377-9 (1990). Blocks were produced using 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50% partial replacement of sand with quarry dust. Compressive strength tests were carried out on the blocks after curing for 7, 14, 21 and 28 days respectively. It was found that optimal compressive strength was achieved at 45% replacement of sand with quarry dust corresponding to a compressive strength of 2.6N/mm2.