Parametric investigation of coconut shells as partial replacement of coarse aggregates in sustainable concreteRishabh Arora, Kaushal Kumar, Saurav Dixit, Rupesh Kumar Tipu, Padmini Kaul, Swati Chauhan, Y. Kamala Raju, Ginni Nijhawan and P. HaindaviE3S Web Conf., 430 (2023) 01180DOI: https://doi.org/10.1051/e3sconf/202343001180