Abstract
Existing data on the relationships between temperature, pozzolanic activity and cement hydration are reviewed with particular emphasis on condensed silica fume (CSF)-ordinary Portland cement blends. CSF concrete with a range of fume contents has been cured at two temperatures (20 °C and 50 °C) for periods up to 91 days. Strength development and relative strength are considered in relation to temperature, cement hydration and pozzolanic action. The observed results establish that relative strength varies directly with CSF content and that the strength enhancement at early curing periods, which is achieved by increase in curing temperature, is a result of increased reaction rate between Ca(OH) 2 and CSF.
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