PENETRATION DEPTH STUDY FROM PREVIOUS EMPIRICAL FORMULA OF MODIFIED FOAMED CONCRETE SLAB UNDER LOW IMPACT LOAD FROM A NON-DEFORMABLE IMPACTOR. Jurnal Teknologi (Sciences & Engineering), [S. l.], v. 78, n. 5, 2016. DOI: 10.11113/jt.v78.8270. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/8270.. Acesso em: 10 apr. 2025.