| 水灰比和碳酸锂对硫铝酸盐水泥水化历程的影响 |
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| 引用本文： | 韩建国,阎培渝.水灰比和碳酸锂对硫铝酸盐水泥水化历程的影响[J].混凝土,2010(12). |
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| 作者姓名： | 韩建国 阎培渝 |
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| 作者单位： | 清华大学土木工程系结构工程与振动教育部重点实验室; |
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| 基金项目： | "十一五"国家科技支撑计划 |
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| 摘 要： | 研究了水灰比和碳酸锂对硫铝酸盐水泥水化历程的影响。水化放热历程测试结果表明:随着水灰比的增大,硫铝酸盐水泥的水化放热速率增大,水化放热量提高;碳酸锂的掺入使得水化诱导期消失,水泥在加入水后直接进入水化加速期,与水灰比的影响相比,碳酸锂的掺入对水化加速期放热速率的影响更为显著;同时,碳酸锂的掺入使得硫铝酸盐水泥的早期水化速率和水化放热量增加,后期水化放热量减小。X射线衍射测试结果表明:碳酸锂的作用仅是提高了硫铝酸盐水泥的水化进程和水化速率,对生成水化产物的种类无影响。
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| 关 键 词： | 水灰比 碳酸锂 硫铝酸盐水泥 水化历程 水化产物 |
Influence of water to cement ratio and lithium carbonate on sulphoaluminate cement hydration process |
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| HAN Jian-guo,YAN Pei-yu.Influence of water to cement ratio and lithium carbonate on sulphoaluminate cement hydration process[J].Concrete,2010(12). |
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| Authors: | HAN Jian-guo YAN Pei-yu |
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| Affiliation: | HAN Jian-guo,YAN Pei-yu(Department of Civil Engineering,Key Laboratory of Structural Engineering and Vibration of China Education Ministry,Tsinghua University,Beijing 100084,China) |
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| Abstract: | The influence of water to binder ratio(W/C) and lithium carbonate on hydration process of sulphoaluminate cement were studied.Hydration heat evolution process tests manifest that the exothermic rate and accumulative heat increase along with the increase of W/C.Lithium carbonate can significantly reduce the induction period,makes the acceleration period immediately begin after adding water.Compared with W/C,lithium carbonate can enhance the exothermic rate during the acceleration period more significantly.Me... |
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| Keywords: | water to cement ratio lithium carbonate sulphoaluminate cement hydration process hydration product |
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