Sustainable Utilization of Corn Stalk Ash and Used Engine Oil as Hydrophobic Admixtures in Cement based composites. Fusion Journal of Engineering and Sciences, [S. l.], 2026. DOI: 10.64615/fjes.2026.97. Disponível em: https://fusionesj.com/index.php/fjes/article/view/97. Acesso em: 28 mar. 2026.