A COMPARATIVE STUDY ON THE EFFECT OF SISAL FIBRE AND WASTE PLASTIC STRIPS IN STRUCTURAL STRENGTH IMPROVEMENT OF TROPICAL BLACK CLAY. Journal of Engineering Studies and Research, [S. l.], v. 28, n. 2, p. 81–91, 2022. DOI: 10.29081/jesr.v28i2.009. Disponível em: https://jesr.ub.ro/journal/article/view/331. Acesso em: 13 sep. 2025.