D. Siguin et al., THE RELATIONSHIP BETWEEN ISOMORPHIC SUBSTITUTIONS AND SWELLING IN MONTMORILLONITES, Journal of Materials Science, 28(22), 1993, pp. 6163-6166
A mathematical relation between the overall degree of isomorphic subst
itution of bentonites and their swelling capacity was investigated. Th
e relation was found to be closely related to surface defects caused b
y moulding sands.