【摘 要】
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This article intends to quantify the increment of hydration heat in fly-ash cement blended paste (FA-C) than that in neat cement paste.To this aim, the pozzolanic effect heat is inducted to explain th
【机 构】
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CNBM Zhongyan Technology Co., Ltd., China Building Materials Academy, No.1 Guanzhuang Dongli Chaoyan
【出 处】
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The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
This article intends to quantify the increment of hydration heat in fly-ash cement blended paste (FA-C) than that in neat cement paste.To this aim, the pozzolanic effect heat is inducted to explain the heat increment.The pozzolanic effect heat in FA-C is composed by the pozzolanic reaction heat of fly-ash and the increment hydration heat of cement component due to a higher hydration degree caused by the addition of fly-ash.Then the hydration heat evolution and the pozzolanic effect heat of blended pastes with four contents (0%, 10%, 30%,50%) and three curing temperatures (20℃, 35 ℃, 50℃) are investigated.From the tests, it is observed that the pozzolanic effect heat is promoted by elevated FA content or curing temperature.The pozzolanic reaction heat of fly ash should not be neglected in pozzolanic effect heat research.Hydration degrees of cement component in blended pastes with high fly-ash content or under high curing temperature is significantly increased.
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