KNÖFEL, D. Influence of alkalis on the properties of cement and Portland cement clinker. Materiales de Construcción, [S. l.], v. 22, n. 146, p. 41–47, 1972. DOI: 10.3989/mc.1972.v22.i146.1427. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/1427. Acesso em: 28 apr. 2024.