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- W2378148417 abstract "The hydration characteristics and pore structure of the cement-ground limestone pastes were studied by X-ray diffractrometry,thermogravimetric-differential scanning calorimeters,mercury intrusion poremeasurement and calorimetry analysis.The results indicate that ground limestone promotes the earlier hydration of cement,and inhibits the later hydration of cement.Ground limestone causes the formation of C3A·CaCO3·11H2O and C3A-0.5CaCO3-0.5Ca(OH)2- 11.5H2O.C3A·0.5CaCO3·0.5Ca(OH)2·11.5H2O is unstable and totally transfers to C3A·CaCO3·11H2O after the formation.With the increase of ground limestone amount,C3A·CaCO3·11H2O advances its generation and exists stably.Ground limestone defers the formation of ettringite and improves the stability of ettringite.The hydration process of cement is changed by the ground limestone.The first exothermic peak of the cement containing ground limestone appears in advance,which shows higher and earlier than that of the pure cement.The addition of ground limestone shortens the induction period of cement hydration,and causes the cement hydration to advance the entering into the acceleration period.With the increase of the hydration time,the addition of ground limestone results in the pore structure of cement pastes changing from little pore to larger pore due to the addition of ground limestone,which is known as the pore coarsening effect." @default.
- W2378148417 created "2016-06-24" @default.
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- W2378148417 date "2010-01-01" @default.
- W2378148417 modified "2023-09-24" @default.
- W2378148417 title "Effect of ground limestone on hydration characteristics and pore structure of cement pastes" @default.
- W2378148417 hasPublicationYear "2010" @default.
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