| 轻烧氧化镁膨胀剂膨胀性能的温度敏感性及其机理分析 |
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| 引用本文： | 刘加平,王育江,田倩,张守治.轻烧氧化镁膨胀剂膨胀性能的温度敏感性及其机理分析[J].东南大学学报(自然科学版),2011,41(2):359-364. |
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| 作者姓名： | 刘加平 王育江 田倩 张守治 |
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| 作者单位： | 江苏省建筑科学研究院有限公司高性能土木工程材料国家重点实验室,南京,211103 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目 |
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| 摘 要： | 为了考察温度对轻烧氧化镁膨胀剂膨胀性能的影响,选取了2种典型煅烧活性的轻烧氧化镁,研究了氧化镁水化速率及掺加氧化镁浆体变形性能的温度敏感性,并从氧化镁水化动力学角度对其机理进行分析.试验结果表明:低活性轻烧氧化镁的水化及膨胀速率显著依赖反应温度,表现出较强的温度敏感性;轻烧氧化镁的水化过程同样可以划分为和硅酸盐水泥相近...
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| 关 键 词： | 氧化镁膨胀剂 水化动力学 水化活性 温度敏感性 |
Temperature sensitivity of light calcined magnesia expansion agent and its mechanism analysis |
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| Liu Jiaping Wang Yujiang Tian Qian Zhang Shouzhi.Temperature sensitivity of light calcined magnesia expansion agent and its mechanism analysis[J].Journal of Southeast University(Natural Science Edition),2011,41(2):359-364. |
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| Authors: | Liu Jiaping Wang Yujiang Tian Qian Zhang Shouzhi |
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| Institution: | Liu Jiaping Wang Yujiang Tian Qian Zhang Shouzhi (State Key Laboratory of High Performance Civil Engineering Materials,Jiangsu Academy of Building Science,Co.,Ltd.,Nanjing 211103,China) |
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| Abstract: | To evaluate the effect of temperature on expansion of light calcined magnesia expansion agent(MEA),two typical MEA were chosen,and temperature sensitivity of hydration rate of MEA and expansive process of cement paste containing MEA were analyzed.Furthermore,the mechanism of temperature was also discussed based on hydration kinetics of MEA.The results indicate that the hydration and expansion of MEA calcined at higher temperature show stronger temperature sensitivity compared to that calcined at lower tempe... |
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| Keywords: | MgO-type expansion agent hydration kinetics hydration activity temperature sensitivity |
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