| Model Analysis of Initial Hydration and Structure Forming of Portland Cement |
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| 作者姓名： | DONG Rongzhen MA Baoguo WEI Jun XU Yonghe ZHU Hongbo TAN Hongbo |
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| 作者单位： | [1]School of Civil Engineering ＆ Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China [2]Key Laboratory for Silicate Materials Science and Engineering Ministry of Education（Wuhan University of Technology）, Wuhan 430070, China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | The auto efficiently hydration heat arrangement and the non-contacting electrical resistivity device were used to test the therrnology effect and the resistivity variation of Portland cement hydration. The structure forming model of Portland cement initial hydration was established through the systematical experiments with different cements, the amount of mixing water and the chemical admixture. The experimental results show that, the structure forming model of cement could be divided into three stages, i e, solution-solution equilibrium period, structure forming period and structure stabilizing period. Along with the increase of mixing water, the time of inflexion appeared is in advance for thermal process of cement hydration and worsened for the structure forming process. Comparison with the control specimen, adding Na2SO4 makes the minimum critical point lower, the flattening period shorter and the growing slope after stage one steeper. So the hydration and structure forming process of Portland cement could be described more exactly by applying the thermal model and the structure-forming model.
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| 关 键 词： | 电阻率 结构信息模型 水泥水化作用 结构模式 |
| 收稿时间： | 2006-05-12 |
| 修稿时间： | 2007-04-14 |
Model analysis of initial hydration and structure forming of Portland cement |
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| DONG Rongzhen MA Baoguo WEI Jun XU Yonghe ZHU Hongbo TAN Hongbo.Model Analysis of Initial Hydration and Structure Forming of Portland Cement[J].Journal of Wuhan University of Technology. Materials Science Edition,2007,22(4):757-759. |
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| Authors: | Dong Rongzhen Ma Baoguo Wei Jun Xu Yonghe Zhu Hongbo Tan Hongbo |
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| Affiliation: | (1) School of Civil Engineering & Mechanics, Huazhong University of Science and Technology, Wuhan, 430074, China;(2) Key Laboratory for Silicate Materials Science and Engineering Ministry of Education (Wuhan University of Technology), Wuhan, 430070, China |
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| Abstract: | The auto efficiently hydration heat arrangement and the non-contacting electrical resistivity device were used to test the therrnology effect and the resistivity variation of Portland cement hydration. The structure forming model of Portland cement initial hydration was established through the systematical experiments with different cements, the amount of mixing water and the chemical admixture. The experimental results show that, the structure forming model of cement could be divided into three stages, i e, solution-solution equilibrium period, structure forming period and structure stabilizing period. Along with the increase of mixing water, the time of inflexion appeared is in advance for thermal process of cement hydration and worsened for the structure forming process. Comparison with the control specimen, adding Na2SO4 makes the minimum critical point lower, the flattening period shorter and the growing slope after stage one steeper. So the hydration and structure forming process of Portland cement could be described more exactly by applying the thermal model and the structure-forming model. |
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| Keywords: | non-contacting electrical resistivity device structure formation model cement hydration structure forming |
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