ABBAS, Bala Alhaji. Empirical Modelling of Mechanical Properties of Concrete Using Bida Natural Gravel as Coarse Aggregate. Journal of Built Environment and Geological Research, Nigeria, v. 11, n. 4, 2026. DOI: 10.70382/ajbegr.v11i4.053. Disponível em: https://africanscholarpub.com/ajbegr/article/view/1086.. Acesso em: 11 nov. 2026.