BEHAVIOUR OF PAVER BLOCKS WITH PARTIAL REPLACEMENT OF SAND USING QUARRY DUST

The reduction in the sources of natural sand has resulted in the increased need to identify substitute material to sand as fine aggregate in the production of Paver Blocks. Quarry dust, a by-product from the crushing process during quarrying activities is one of such materials. Granite fines or rock dust is a by-product obtained during crushing of granite rocks and is also called quarry dust. It has recently gained good attention to be used as an effective filler material instead of fine aggregate. This present work is an attempt to use quarry dust as a Partial replacement of sand in concrete. Using this, reduction of cost and safe disposal of material is achieved. The experimental investigations were carried out by replacing sand with quarry dust in various percentage as 0%, 10%, 20%, 30%, 40%, 50%. The effect of using quarry dust as natural sand replacement on mechanical properties such as compressive strength, tensile strength, flexural strength and water absorption were conducted. As a result, the strength of paver blocks increased till 40% replacement of quarry dust and it was concluded that replacement up to 40% of quarry dust was found to be effective for medium traffic