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2002 Fiscal Year Final Research Report Summary

Visualization of permeability in light weight soil with air foam and its quantitative evaluation using X-ray CT

Research Project

Project/Area Number 13650546
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Geotechnical engineering
Research InstitutionKumamoto University

Principal Investigator

OTANI Jun  Kumamoto University, Civil and Architectural Engineering, Professor, 工学部, 教授 (30203821)

Project Period (FY) 2001 – 2002
KeywordsMixed soils / Permeability / Visualization / X-ray CT scanner / Non-destructive testing / Image processing analysis
Research Abstract

The objective of this study is not only to visualize permeability in the mixed soil but also to evaluate this behavior quantitatively using X-ray CT scanner. The soil used in this study was so called "light weight soil with air foam". Here, in order to obtain the well quantified results, a new testing apparatus for permeability test was developed, in which this apparatus is especially for the purpose of the use in the X-ray CT system. The proper image processing analysis was used in order to make quantitative discussion possible.
Following is the list of the results from this study:
1) In order to make sure capability of X-ray CT scanner in this study, the simple permeable behavior was visualized using X-ray CT scanner as a previous study.
2) A new type of permeability testing apparatus especially for X-ray CT system was developed and a series of permeability test was conducted with different confining conditions (100 and 300kPa) in the mixed soil which is called light weight soil with air foam.
3) In order to make successful quantitative discussion, a method of proper image processing analysis was developed and using this technique, the permeable behavior was discussed not only visually but also quantitatively.
4) In addition to those results, the application of this technique to geo-environmental engineering is also expected and here, the diffusion on the contaminant water in the saturated soil was tried to visualize using this testing apparatus with X-ray CT scanner.
5) Finally, the effectiveness of industrial X-ray CT scanner in geotechnical engineering was confirmed based on these results in this study.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] J.Otani: "Evaluation of hydraulic property of light weight soil with air foams"Proceedings of International Workshop on Lightweight Geo-Materials. 159-164 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 大谷 順: "X線CT法を用いた気泡混合処理土の浸透・乾燥現象の解明"土木学会論文集第III部門. 701. 293-302 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J.Otani: "Evaluation of hydraulic property of mixed soil with air foam using X-ray CT method"Proceedings of 2^<nd> Asian Regional Conference on UNSAT. (印刷中). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Kikuchi: "Characterization of permeability on light weight soil with air foam using X-ray CT scanner"Proceedings of International Workshop on X-ray CT for Geomaterials. (掲載決定). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 徳永健介: "X線CT法を用いた混合土中の透水に関する定量的評価"第38回地盤工学研究発表会講演集. (掲載決定). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 徳永健介: "平成14年度熊本大学工学部環境システム工学科卒業論文"X線CT法を用いた混合土中の透水に関する定量的評価. 14 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J. Otani, Y. Kikuchi, T. Mukunoki, N. Yamagata: "Evaluation of hydraulic property of light weight soil with air foams"Proc. Of Int. Workshop on Lightweight Geomaterials. 159-164 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J. Otani, T. Mukunoki, K. Nagatome, Y. Kikuchi, T. Sato: "Characterization of seepage and drying on light weight soil with air foam using X-ray CT method"Journal of Civil Engineering, JSCE. No. 701, III-58. 293-302 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J. Otani, Y. Kikuchi: "Evaluation of hydraulic property of mixed soil with air foam using X-ray CT method"Proc. Of 2^<nd> Asian Regional Conf. On UNSAT. to appear. (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Kikuchi, J. Otani: "Characterization of permeability on light weight soil with air foam using X-ray CT scanner"Proc. Int. Workshop on X-ray CT for Geomaterials. to appear. (2003)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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