...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Magazine of Concrete Research >The use of MRI to observe fractures in concrete
【24h】

The use of MRI to observe fractures in concrete

机译：使用MRI观察混凝土中的裂缝

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study extends previous work and demonstrates that magnetic resonance imaging (MRI) of water allows the internal crack pattern of hardened concrete to be observed along with the internal aggregate structure. The ability to reconstruct three-dimensional images is demonstrated and the importance of image registration is discussed. By using aramid fibre-reinforced plastics (AFRP), it is possible to make reinforced concrete specimens that can be measured by MRI. Plain concrete cylinders and others externally confined by AFRP spirals have been tested in compression and scanned after various amounts of load have been applied to show the progress oj fracture development. Samples have also been made with straight AFRP rods cast into the concrete which, when pulled out, give bond failures and internal cracking. It is possible not only to observe the fractures, but also to relate them to the internal concrete structure determined by previous scans of the freshly prepared concrete samples.
机译：这项研究扩展了以前的工作，并证明了水的磁共振成像（MRI）可以观察到硬化混凝土的内部裂缝模式以及内部骨料结构。演示了重建三维图像的能力，并讨论了图像配准的重要性。通过使用芳纶纤维增强塑料（AFRP），可以制造可以通过MRI测量的增强混凝土标本。普通混凝土圆柱体和其他受AFRP螺旋约束的圆柱体已在压缩状态下进行了测试，并在施加各种载荷后进行了扫描，以显示裂缝发展的进程。样品也可以通过将AFRP直杆浇铸到混凝土中制成，将其拉出时会导致粘结失败和内部开裂。不仅可以观察裂缝，而且还可以将它们与通过对新制备的混凝土样品的先前扫描确定的内部混凝土结构相关联。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号