| 丹江口大坝混凝土芯样的微观测试与分析 |
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| 引用本文： | 李珍,肖靓,汪在芹.丹江口大坝混凝土芯样的微观测试与分析[J].长江科学院院报,2011,28(5):59-62. |
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| 作者姓名： | 李珍 肖靓 汪在芹 |
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| 作者单位： | 1.长江科学院 材料与结构研究所， 武汉 430010；2.水利部水工程安全与病害防治工程技术研究中心， 武汉 430010 |
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| 基金项目： | 水利部公益性行业专项项目(200801057) |
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| 摘 要： | 丹江口大坝初期工程混凝土中含有一定量活性骨料--燧石,使得大坝混凝土存在碱骨料反应发生的风险.为此,对大坝混凝土进行了取芯研究,重点对原始芯样与养护后芯样采用扫描电镜(SEM)、能谱仪(EDS)进行了微观测试与分析,以准确判断大坝混凝土碱骨料反应发生情况.分析结果表明:由于建设初期采取的措施得当,运行加余年的大坝混凝土...
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| 关 键 词： | 大坝安全 碱活性 碱骨料反应(AAR) 微观测试 |
Microscopic Tests and Analysis on Concrete Core Samples from Danjiangkou Dam |
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| LI Zhen,XIAO Liang,WANG Zai-qin.Microscopic Tests and Analysis on Concrete Core Samples from Danjiangkou Dam[J].Journal of Yangtze River Scientific Research Institute,2011,28(5):59-62. |
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| Authors: | LI Zhen XIAO Liang WANG Zai-qin |
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| Affiliation: | 1.Changjiang River Scientific Research Institute, Wuhan 430010, China；2.Center on Water EngineeringSafety and Disaster Prevention of the Ministry of Water Resources, Wuhan 430010，China |
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| Abstract: | During the initial construction stage of Danjiangkou Dam,a certain number of reactive aggregates(flints) were found in the concrete and hence posed potential risks caused by possible Alkali-Aggregate Reaction(AAR).In this paper,microscopic tests on the original core samples and cured core samples are carried out to judge the status of AAR accurately.The test methods include Scanning Electron Microscope Analysis(SEMA) and Energy Dispersive Spectrometry Analysis(EDSA).The analysis results show that AAR deteri... |
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| Keywords: | dam safety alkali reactivity Alkali-Aggregate Reaction(AAR) microscopic test |
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