Experimental Investigations on the Strength Parameters of Ternary Blended Concrete Mixes Integrating Marble Dust and Nano Silica

This study examines the mechanical properties of concrete mixes made using ternary mixed Ordinary Portland Cement (OPC) that incorporate different amounts of marble dust (MD) and nano silica (NS) as supplemental cementitious materials. This study's primary objective is to assess the effects of these additional components on concrete's mechanical characteristics and water absorption in order to enhance the material's overall performance and sustainability. Concrete mix designs were created by partially replacing cement with NS at 1, 2, 3, and 4% by weight and MD at 5, 10, 15, and 20%. Following 7, 14, and 28 days of curing, the ternary mixes’ compressive, split tensile, and flexural strengths were assessed. Results revealed a significant enhancement in compressive strength with the incorporation of MD and NS compared to the control mix. The optimum combination, containing 15% MD and 3% NS, achieved the highest mechanical performance. This study highlights the feasibility of integrating MD and nanomaterials into concrete to develop sustainable, high-performance construction materials.