Use of Polypropylene Waste Plastic Pellets as Partial Replacement for Fine Aggregate in Concrete. University of Khartoum Engineering Journal, [S. l.], v. 9, n. 1, 2022. DOI: 10.53332/kuej.v9i1.951. Disponível em: https://onlinejournals.uofk.edu/kuej/article/view/951. Acesso em: 8 يوليو. 2026.