Transactions of the INDIAN CERAMIC SOCIETY Vol. 44 1985
Thermoanalytical Studies on Gypsum Dehydration
VIJAY VAKHLU, P. S. BASSI* AND S. K. MEHTA
Pages : 29-32
DOI :10.1080/0371750X.1985.10822727
Abstract
There is no general agreement regarding the mechanism of gypsum
dehydration. Different authors have come to different conclusions
regarding the applicability of mathematical model relations as applicable
to solid state decompositions. The paper presents the results of
the thermoanalytical studies (non-isothermal) conducted with this
problem in mind. The data have been analysed by the method of
Satava (1971) and Coats and Redfurn (1964). The results as discussed
suggest that gypsum dehydration follows the Avrami-Erofeev nucleation
mechanism and obeys the model relation [-In (I- e<))ll2 = Kt.
