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| 中子照相技术及其在混凝土材料研究中的应用 | |
| 引用本文： | 张鹏,Wittmann F.H.,赵铁军,Lehmann E.H.,金祖权.中子照相技术及其在混凝土材料研究中的应用[J].混凝土,2009(4). |
| 作者姓名： | 张鹏 Wittmann F.H. 赵铁军 Lehmann E.H. 金祖权 |
| 作者单位： | 1. 青岛理工大学混凝土耐久性研究中心,山东,青岛,266033 2. 青岛理工大学混凝土耐久性研究中心,山东,青岛,266033;Aedificat Institute Freiburg,Freiburg,Germany 3. Paul Scherrer Institute, Villigen PSI,Switzerland |
| 基金项目： | 国家自然科学基金重点项目，国家自然科学基金 |
| 摘 要： | 介绍了中子照相技术的原理和基本装置,并将其应用于混凝土材料的检测和研究中.结果表明:中子照相能够直观地检测钢筋混凝土内部的裂缝发展情况,并能实现对混凝土中水分侵入过程的可视化研究.在成像数据的基础上,对传统的水分侵入模型进行了修正,认为在水分侵入的初始阶段,水渗透系数为常数;吸水超过4 h后,渗透系数则按指数函数衰减. |
| 关 键 词： | 中子照相 无损检测 裂缝 水分侵入 渗透系数 |
Neutron radiography technique and its application on research of concrete materials |
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| ZHANG Peng,Wittmann F.H.,ZHAO Tie-jan,Lehmann E.H.,JIN Zu-quan.Neutron radiography technique and its application on research of concrete materials[J].Concrete,2009(4). | |
| Authors: | ZHANG Peng Wittmann FH ZHAO Tie-jan Lehmann EH JIN Zu-quan |
| Affiliation: | 1.Center for Studies of Concrete Durability;Qingdao Technological University;Qingdao 266033;China;2.Aedificat Institute Freiburg;Freiburg;Germany;3.Paul Scherrer Institute;Villigen PSI;Switzerland |
| Abstract: | The principles and basic equipments of neutron radiography have been introduced;this technique has been utilized to detect and study concrete materials.The results indicate that,neutron radiography could be used to directly detect the crack inside the reinforced concrete;it could also make the process of water penetration into concrete visually.Based on the neutron radiographies,traditional model of water penetration has been modified.At the beginning of water penetration the coefficient of penetration was ... |
| Keywords: | neutron radiography non-destructive detection crack water penetration coefficient of penetration |
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