| 探地雷达检测混凝土含水率试验研究 |
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| 引用本文： | 周耀,王元丰,韩冰,杨健. 探地雷达检测混凝土含水率试验研究[J]. 北方交通大学学报, 2011, 0(1): 17-19 |
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| 作者姓名： | 周耀 王元丰 韩冰 杨健 |
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| 作者单位： | [1]北京航夺航天大学交通科学与工程学院,北京100191 [2]北京交通大学土木建筑工程学院,北京100044 |
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| 基金项目： | 中央高校基本科研业务费专项资金资助（YWF-10-02-061）; 国家“十一五”科技支撑计划项目资助（2006BAJ27B02 2006BAJ06B04） |
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| 摘 要： | 混凝土含水率对混凝土材料和结构性能有很大影响,但其无损检测技术不能满足实际需要.雷达电磁波的传播速度主要由材料介电常数决定,而影响混凝土材料介电常数主要是其含水率.本文对探地雷达检测混凝土含水率技术进行研究,采用干燥法得到混凝土试块含水率,利用探地雷达测得雷达波在混凝土板中的波速,得到了探地雷达波速和混凝土含水率的关系,发现探地雷达波速和混凝土含水率具有良好的线性关系.
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| 关 键 词： | 探地雷达 混凝土含水率 雷达波速 无损检测 |
Determination of water content of concrete using ground penetrating radar |
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| ZHOU Yao,WANG Yuanfeng,HAN Bing,YANG Jian. Determination of water content of concrete using ground penetrating radar[J]. Journal of Northern Jiaotong University, 2011, 0(1): 17-19 |
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| Authors: | ZHOU Yao WANG Yuanfeng HAN Bing YANG Jian |
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| Affiliation: | 1.School of Transportation Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China;2.School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | Water content of concrete has significant impacts on performances of material and structures of concrete,while nondestructive evaluation cann＇t meet practical requirement.The propagation of electromagnetic waves is controlled by its electromagnetic properties,and mainly influenced by the presence of water in the case of concrete.Through using drying method,the water content of concrete is gotten,and velocity of radar waves through concrete is obtained by using ground penetrating radar.So the relation between velocity of radar waves and water content of concrete is established.Results show that there is a linear relation between velocity of radar waves and the water content of the concrete. |
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| Keywords: | ground penetrating radar water content of concrete speed of radar waves nondestructive evaluation |
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