| 基于实测资料的外掺MgO微膨胀混凝土变形性态研究 |
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| 引用本文： | 朱赵辉,田振华,吕梽槟,孙建会.基于实测资料的外掺MgO微膨胀混凝土变形性态研究[J].中国科学(E辑),2014(10):1027-1034. |
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| 作者姓名： | 朱赵辉 田振华 吕梽槟 孙建会 |
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| 作者单位： | 中国水利水电科学研究院;北京中水科水电科技开发有限公司; |
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| 基金项目： | 北京中水科水电科技开发有限公司科研专项(批准号:JC-13-ZY-16)资助项目 |
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| 摘 要： | 外掺MgO混凝土产生的延迟性微膨胀能够补偿混凝土在温降过程中产生的收缩变形,从而防止或减少混凝土产生裂缝.本文通过对向家坝水电站导流底孔外掺氧化镁混凝土的室内试验和现场监测成果进行对比分析,探讨了外掺MgO与未掺MgO,同类混凝土中掺量不同对混凝土变形特性的影响.
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| 关 键 词： | MgO 混凝土 微膨胀 自生体积变形 |
Study on deformation characteristics of micro expansion concrete mixed with MgO based on the measured data |
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| Institution: | ZHU ZhaoHui, TIAN ZhenHua, LV ZhiBin, SUN JianHui(1 China Institute of Water Resources and Hydropower Research, Beijing 100038, China; 2 Beijing IWHR Technology Co, Ltd, Beijing 100038, China) |
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| Abstract: | MgO concrete has delayed micro expansion, which can compensate shrinkage deformation in the temperature reduction process, so as to prevent or reduce the concrete crack. Based on the comparative analysis about indoor test and field monitoring results of Xiangjiaba Hydropower Station Diversion Tunnel concrete mixed with MgO, compared with MgO and without MgO doped, the similar concrete mixed with different MgO admixture influence on concrete deformation characteristics was discussed. |
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| Keywords: | MgO concrete micro expansion autogenous volume deformation |
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