Plastic Coarse Aggregates with Low- and High-Density Polyethylene with Improved Shore Durometer Hardness as Partial Replacement to Natural Coarse AggregatesDonna Trisha T. Romano and Ernesto J. GuadesE3S Web of Conf., 488 (2024) 03005DOI: https://doi.org/10.1051/e3sconf/202448803005