COMPRESSIVE STRENGTH OF CONCRETE CONTAINING HIGH VOLUME OF QUARRY WASTE

Abstract

Most of sand used for construction in Sabah have very high clay, silt, and dust content. This sand is not suitable for construction since it does not satisfy the standard requirement. On the other hand, quarries in Sabah produce large quantity of waste and cause serious environmental problem. In this study, the potential use of quarry waste as replacement for sand and cement in concrete was studied. The first phase of this study investigates the effect of different replacement percentage (0%, 10%, 20% and 40%) of quarry waste as cement replacement. The results showed that mortar with 10% of quarry waste as cement replacement displayed higher compressive strength. The second phase covered the effect of different percentage (25%, 50%, 75% and 100%) of quarry waste as fine aggregate replacement. It was found that this replacement has improved the strength of all mortars. The compressive strength of mortar with 75% quarry waste replacement (QWF75) was the highest among these mortars. The third phase investigated compressive strength of concrete containing high volume quarry waste (HVQW). For this, 10% of cement and 75% of fine aggregate were replaced with quarry waste. Slump test, density and compressive strength test were conducted on HVQM concrete to determine the workability, denseness, and strength of concrete. The mixture was designed for 60-180 mm slump value. The HVQW concrete has higher compressive strength compared to the control sample and met the margin strength value of the designed concrete mix. It was found that quarry waste contributed to the denseness of concrete, leading to the increase in density and compressive strength.