Transactions of the INDIAN CERAMIC SOCIETY Vol. 41 1982
Hydration of Portland-Pozzolanic Cements
C. SAMANTA
Pages : 7-9
DOI : 10.1080/0371750X.1982.10822559
Abstract
Portland-pozzolanic cements were prepared by gradual replacement
of Portland cement by pozzolana. Calcined common clay and china
clay were used as two different pozzolanas. Sulphated Portlandpozzolanic
cements were prepared by incorporating gypsum. Hydration
values were measured on curing these cements separately in
water and in 5% MgSO, solution. On water-curing the initial rate of
hydration was observed to be high, it slowed down gradually due to
the resistance by the hydrated layer to the diffusion of water. Samples
containing china clay hydrated more because of the availability of
alumina for the formation of hydrated compounds.
