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Early Strength Development and Hydration of Ordinary Portland Cement/Calcium Aluminate Cement Pastes

โœ Scribed by Ping Gu; James J Beaudoin; Edmond G Quinn; Robert E Myers

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
544 KB
Volume
6
Category
Article
ISSN
1065-7355

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โœฆ Synopsis

The early strength development of ordinary Portland cement (OPC)/calcium aluminate cement (CAC) pastes (92.5/7.5, 80/20, and 20/80) was studied. Conduction calorimetry, X-ray diffraction, and scanning electron microscopy methods were used to monitor the heat evolution and microstructural changes of these pastes. It is apparent that ettringite formation contributes to the early "set strength" in the 80/20 paste. The OPC hydration seems to be delayed by the presence of CAC.

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