RUMIYANTI, Leni; LISTIANI, Listiani; DAMAYANTI, Tika. OPTIMIZATION OF THE USE OF FLY ASH AS AN ADDITIVE PORTLAND COMPOSITE CEMENT (PCC). Spektra: Jurnal Fisika dan Aplikasinya, [S. l.], v. 4, n. 2, p. 61–72, 2019. DOI: 10.21009/SPEKTRA.042.02. Disponível em: https://journal.unj.ac.id/unj/index.php/spektra/article/view/10035. Acesso em: 3 nov. 2024.