S.F.S. Alkalis in portland cement. potassium salta as by-products. Materiales de Construcción, [S. l.], v. 6, n. 071, p. 1–5, 1956. DOI: 10.3989/mc.1956.v06.i071.2385. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2385. Acesso em: 5 may. 2024.