ABSTRACT
Quarry dust as the major by-product of crushing process during quarrying activities in quarry industry is being used in large scale in highways as a surface finishing material, manufacturing hollow sandcrete blocks and in light weight concrete fabricated elements, for many years. In an effort to use the QD in constructions, research has been carried out for its possible utilization in making concrete as partial replacement of cement. The experimental investigation was performed to evaluate the strength and durability properties of concrete mixes, in which cement was partially replaced with quarry dust (QD) with five percentages (0%, 10%, 20%, 30% and 40%) by weight. Compression test was carried out to evaluate the strength properties of concrete at the age of 7, 14, 21 and 28 days. Results showed that there was a decrease in compressive strength with the addition of quarry dust (QD) up to 40% replacement. Resistance of concrete against abrasion (wear), were also improved for all concrete mixes. A result showed that there was better enhanced in strength and durability properties at 20% replacement of cement with Quarry Dust.
