期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 94, 期 2, 页码 485-492出版社
SPRINGER
DOI: 10.1007/s10973-007-8787-z
关键词
cement hydration; fly ash cement paste; pozzolanic reaction
Four paste mixtures with varying replacement level of the cement content by fly ash have been studied. Due to fly ash, the acceleration period decreased and a third hydration peak was noticed with isothermal calorimetry. The total heat after 7 days increased with increasing fly ash content. From 1 to 7 days, thermogravimetry showed a higher chemically bound water and Ca(OH)(2)-content for the pastes with fly ash. Between 7 and 14 days the calcium hydroxide started to be depleted due to the pozzolanic reaction. A unique relation was found between calcium hydroxide and total heat development.
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