Investigating the Impact of Fly ash and Copper Slag on Concrete S. Pream Kumar, K.Vijay Sankar, U. Nandhini, M. Priyanka, D. Sriaishwarya, N. Lavanya and P. Ragul E3S Web of Conf., 559 (2024) 04037 Published online: 08 August 2024 DOI: 10.1051/e3sconf/202455904037