Strength Performance of Concrete Incorporating Copper Slag and Hooked-End Steel Fibers
DOI:
https://doi.org/10.66132/ngce20260104Keywords:
Copper slag , Compressive strength , Fine aggregate replacement, SustainabilityAbstract
River sand depletion and the growing burden of industrial waste have increased interest in alternative concrete materials. This study evaluated copper slag as a partial replacement for natural fine aggregate in conventional concrete and steel fiber reinforced concrete (SFRC) of grades M30 and M40, designed as per IS 10262. Workability was assessed by slump, while compressive, flexural, and split tensile strengths were measured at specified curing ages. Copper slag improved workability because of its lower water absorption than sand, but strength improved only up to an optimum replacement level. The best performance was observed at 50% replacement for M30 conventional concrete and 40% for M40, while SFRC achieved the highest 28-day compressive strength at 40% replacement. Compared with conventional mixes, SFRC showed higher compressive, flexural, and split tensile strength, along with improved crack control and ductility. The study supports optimized copper slag use for more sustainable and better-performing concrete.
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Data Availability Statement
The data supporting the findings of this study are available from the corresponding author upon reasonable request.
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