Effects of Waste Tyre Rubber as Fine Aggregate on some Properties of Terrazzo

Abstract

This study investigates the effects of partial replacement of fine aggregates with waste tyre crumbs waste tyre crumbs on the properties of Terrazzo. Terrazzo mixes 1:1:2 (Cement: fine aggregates: Coarse aggregate) were made with the fine aggregates partially replaced with 0, 5, 10 and 15% waste tyre crumbs. Terrazzo cubes were cast and cured in water for 28 days. Compressive strengths of the cubes were determined at 7, 14 and 28 days. Water absorption test was also carried out on the cast cubes after 28 days curing. Sound absorption test was conducted by impedance tube method. This study revealed that as percentage replacement of fine aggregates with waste tyre crumbs increases the slump of the wet mixes decreases. It also showed that partial replacement of fine aggregates with waste tyre crumbs resulted to reduction in compressive strength of the terrazzo specimens. The results of water absorption tests showed that partial replacement of fine aggregates with waste tyre crumbs caused reduction in water absorption of the terrazzo specimens. Partial replacement of fine aggregates with waste tyre crumbs also enhanced the sound absorption of the terrazzo specimens. This study recommends partial replacement of fine aggregates with 5% waste tyre crumbs to enhance the water absorption or 10% replacement of fine aggregates with waste tyre crumbs to improve sound absorption properties in terrazzo finish