• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Advances in X-ray analysis (ICDD2001) >SULFATE ATTACK OF PORTLAND CEMENT STUDIED BY X-RAY MICROTOMOGRAPHY (MICRO-CT)
【24h】

SULFATE ATTACK OF PORTLAND CEMENT STUDIED BY X-RAY MICROTOMOGRAPHY (MICRO-CT)

机译：X射线显微照相术（MICRO-CT）研究的硅酸盐水泥的硫酸盐侵蚀

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

Attack of Portland cement by ambient sulfates presents a considerable risk to structures in somernenvironments. In this study, x-ray microtomography, a high resolution variant of medical “CT”,rnnoninvasively mapped the progression of damage in Portland cement resulting from exposure tornan aqueous solution of Na_2SO_4 (sodium ion concentration of 10,000 ppm). Cement pasternsamples from water-to-cement ratios w/c = 0.45, 0.50 and 0.60 and exposures between 0 and 120rndays were examined. Microtomography revealed cracking that would have been attributed tornsample preparation during sectioning of the friable material and allowed damage to be followedrnin individual specimens. The greater w/c, the more rapidly damage progressed, and spallingrnoriginated at the corners of the 10 mm diameter, 40 mm long cylindrical samples.
机译：周围硫酸盐对波特兰水泥的侵蚀对某些环境中的建筑物构成了相当大的风险。在这项研究中，X射线显微断层照相术是医学“ CT”的高分辨率变体，它无创地绘制了由于暴露于Na_2SO_4的钠水溶液（钠离子浓度为10,000 ppm）而导致的波特兰水泥的破坏进程。水泥水泥样品的水灰比w / c = 0.45、0.50和0.60，暴露时间为0至120天。显微断层照相术显示了开裂，这可能是由于在对易碎材料进行切片时准备了样品而造成的，并且允许对单个样品进行破坏。 w / c越大，损坏进行得越快，并且在直径10毫米，长40毫米的圆柱形样品的角处剥落剥落。

著录项

  • 来源
  • 会议地点 Steamboat Springs CO(US);Steamboat Springs CO(US);Steamboat Springs CO(US)
  • 作者

    S.R. Stock; K. Ignatiev; A.P. Wilkinson; N. Naik; K.E. Kurtis;

  • 作者单位

    Schools of Materials Sci. Eng., Georgia Inst. of Technology, Atlanta, GA, USA On leave at Inst. for Bioengineering Nanoscience in Advanced Medicine, Northwestern;

    rnSchools of Materials Sci. Eng., Georgia Inst. of Technology, Atlanta, GA, USA;

    rnSchools of Chemistry Biochemistry Georgia Inst. of Technology, Atlanta, GA, USA;

    rnSchools of Civil Environmental Eng., Georgia Inst. of Technology, Atlanta, GA, USA;

    rnSchools of Civil Environmental Eng., Georgia Inst. of Technology, Atlanta, GA, USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 X射线、紫外线、红外线;
  • 关键词

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