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| 水灰比对水泥水化放热模型的影响 |
| Effect of W/C Ratio on Heat Release Model of Hydration of Cement |
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| DOI：10.3969/j.issn.1671-5322.2011.01.018 |
| 中文关键词: 水灰比效应 水化热 水化程度 |
| 英文关键词: effect of W/C ratio heat of hydration degree of hydration |
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| 中文摘要: |
| 水化放热量与水化程度有直接关系,水化热的变化可反映水化程度的变化,水灰比对水化放热量的影响反映了水灰比对水化程度的影响.水灰比越高,水泥的可化合水越多,可容纳水化产物的微观空间越大,进而使得水泥浆的水化程度越充分.刚开始,水灰比对水泥水化生热率的影响并不明显;但经过一定时间后,生热率随水灰比的增加而提高.当水灰比由0.3增加到0.6时,28 d期水化热增加120 KJ/kg. |
| 英文摘要: |
| Since the heat of hydration is directly related to the degree of hydration,the heat generation is affected by the w/c ratio.Cement with a high w/c ratio has more water and microstructural space available for hydration of cement,which in turn results in a higher degree of hydration.The rate of heat evolution at very beginning is not significantly affected by the w/c ratio.However,the heat evolution rate starts to decrease as the w/c ratio decreases after a certain time.The total heat liberated increases more than 120 kJ/kg when the w/c changes from 0.3 to 0.6. |
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