STRENGTH CHARACTERISTICS OF CONCRETE MADE WITH RECYCLED CONCRETE AGGREGATE (RCA), MICRO-SILICA AND POLYPROPYLENE FIBRE. Journal of Engineering Studies and Research, [S. l.], v. 28, n. 4, p. 18–24, 2023. DOI: 10.29081/jesr.v28i4.002. Disponível em: https://jesr.ub.ro/journal/article/view/346. Acesso em: 13 sep. 2025.