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Visualization of rapid penetration of water into cracked cement mortar using neutron radiography

机译:使用中子射线照相法可视化水快速渗透到破裂的水泥砂浆中

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摘要

The penetration of water and other aqueous solutions into cracked cementitious materials is important in a variety of engineering contexts. The quick process of water penetration into cracked cement mortar during the first few seconds has been visualized for the first time with high temporal resolution of 10 fps by neutron radiography (NR). The results indicate that cracks are filled with water instantaneously by capillary action whenever they come in contact with water. The water front travelled more than 20 mm during the first second. Time-dependent moisture distributions in the cracked cement mortar during water penetration testing have also been quantitatively analysed.(C) 2017 Elsevier B.V. All rights reserved.
机译:在各种工程环境中,水和其他水溶液渗透到破裂的胶凝材料中很重要。中子射线照相(NR)首次以10 fps的高时间分辨率显示了水在最初几秒钟内快速渗透到破裂的水泥砂浆中的过程。结果表明,每当裂缝与水接触时,裂缝就会立即通过毛细作用充满水。在第一秒内,水位移动了20毫米以上。还已经定量分析了渗透测试期间裂化水泥砂浆中随时间变化的水分分布。(C)2017 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Materials Letters》 |2017年第may15期|1-4|共4页
  • 作者单位

    Qingdao Univ Technol, Ctr Durabil & Sustainabil Studies, Qingdao 266033, Peoples R China|Karlsruhe Inst Technol, Inst Concrete Struct & Bldg Mat, D-76131 Karlsruhe, Germany;

    Qingdao Univ Technol, Ctr Durabil & Sustainabil Studies, Qingdao 266033, Peoples R China;

    China Inst Atom Energy, Neutron Scattering Lab, Beijing 102413, Peoples R China;

    China Inst Atom Energy, Neutron Scattering Lab, Beijing 102413, Peoples R China;

    Karlsruhe Inst Technol, Inst Concrete Struct & Bldg Mat, D-76131 Karlsruhe, Germany;

    Qingdao Univ Technol, Ctr Durabil & Sustainabil Studies, Qingdao 266033, Peoples R China;

    China Inst Atom Energy, Neutron Scattering Lab, Beijing 102413, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Neutron radiography; Crack; Porous materials; Cement mortar; Water penetration; Visualization;

    机译:中子射线照相裂缝多孔材料水泥砂浆透水可视化;

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