International Research Journal of Education and Technology

The utilization of supplementary materials in concrete has emerged as an effective approach to improve performance, reduce environmental impact, and optimize construction costs. This study evaluates the performance of dolomite-blended concrete in comparison to conventional concrete by partially replacing cement and conventional aggregates with dolomite in varying proportions of 0%, 2%, 4%, 6%, 8%, and 10% by weight. Experimental investigations were conducted to determine fresh properties through slump tests and hardened properties through compressive, tensile, and flexural strength tests at 7, 14, and 28 days. The results indicate that the inclusion of dolomite up to an optimum level significantly enhances workability and mechanical strength, with peak performance observed at a 6% replacement level. Beyond this proportion, a marginal reduction in strength was recorded. The study concludes that dolomite can be effectively used as a partial replacement material in concrete to achieve improved performance, sustainability benefits, and potential cost savings without compromising structural integrity.

Key Words:-  supplementary materials, dolomite-blended concrete, experimental investigations, compressive strength, tensile strength, flexural strength