Experimental Exploration of the Impact of Metal Scrap Inclusion in Concrete, Based on Marble Dust, As A Replacement for Cement

In the contemporary age, concrete is synonymous with strength and longevity. The use of cement and its production is a significant contributor to environmental pollution. To address these challenges, industrial waste materials are frequently employed as partial replacements for cement in concrete construction, reducing the carbon footprint and enhancing structural integrity. This study focused on M35 grade concrete mixes, where marble dust was incorporated at levels of 0%, 5%, 10%, 15%, and 20%, in combination with varying steel wire ratios. These mixes were tested for their mechanical properties at 7, 14 and 28 days. The research findings highlight that the combination of ,75% metal scrap and a 10% replacement of marble dust with cement produced the highest mechanical strength compared to conventional concrete and other ratios. Notably, increasing these proportions beyond the specified levels resulted in a substantial decrease in strength. The results indicate that the inclusion of a specific amount of marble dust with steel fiber improved the compactness and interlocking of aggregate particles, resulting in greater durability compared to ordinary cement concrete. The study assessed key mechanical properties such as compressive strength, flexural strength, and split tensile strength, along with considerations of workability and durability.