Abstract
The dehydration of low temperature phases in Portland and pozzolanic cements and pastes has been studied using a combination of Differential Scanning Calorimetry (DSC) and X-ray Powder Diffraction (XRD). Endotherms associated with the dehydration of gypsum, monosulphate and ettringite were observed by DSC. Differences in thermal behavior in Portland Cement and mixtures of type I Portland with fly ash (15, 25 and 40%) were studied.
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