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Micromechanics of fine grained soil: Quantification of its mesoscale structure and mechanical properties

Research Project

Project/Area Number 21H01422
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22030:Geotechnical engineering-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Matsushima Takashi  筑波大学, システム情報系, 教授 (60251625)

Co-Investigator(Kenkyū-buntansha) 渡邊 保貴  一般財団法人電力中央研究所, サステナブルシステム研究本部, 主任研究員 (80715186)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2023: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2022: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Keywords粘土 / SEM観察 / 個別要素法 / 粒状体 / 堆積構造 / メゾスケール堆積構造 / マイクロメカニックス / SEM / DEM(個別要素法) / 粒子形状 / 粒子間付着力 / granular materials / soil mechanics / visualization experiment / discrete element method / statistical mechanics / マイクロx線CT / Discrete Element Method / Statistical mechanics / 付着力
Outline of Research at the Start

本研究では,粒子サイズが小さく,観測が困難である一方で,熱化学反応等の材料変化の影響を受けやすい細粒土を対象として,(1)湿潤状態の細粒土のメゾスケール構造を観察する最先端の実験 手法の開発,および(2)スーパーコンピュータによる大規模粒子ベース数値解析を行い,メゾスケール構造ユニットの力学応答を明らかにすることによって,付着性粒状体としての細粒土のマイクロメカニックスの新たな枠組みを構築する.

Outline of Final Research Achievements

We aimed to develop microscale experimental and numerical methods of clayey soils, which are used in the geological disposal of radioactive waste, to evaluate their long-term mechanical properties. The research findings are as follows: (1) The existing methods for observing the packing structure of clay particles in a wet state were evaluated. (2) A series of compression and swelling tests on wet clay were conducted and observed that multiple platy clay particles aggregated and folded under high pressure. (3) Particle-scale numerical simulations on the compression of platy clay particles were carried out to obtain the useful insights on the relation between compressive force and particle packing structure. (4) The statistical properties of clusters of clay particles aligned in the same direction due to compression were studied using numerical simulations.

Academic Significance and Societal Importance of the Research Achievements

粒子サイズが小さく,観測が困難である細粒土(特に粘土)の長期的力学特性の評価手法を確立することは,放射性廃棄物地層処分等に関連して工学的に重要であるだけでなく,地盤の形成過程の解明など理学的にも重要である.特に,熱化学反応等の材料変化等に関しては,短い期間の実験結果を外挿して評価しているのが現状である.本研究で実施したような土粒子スケールの観測や数値解析は,材料変化をより直接的に考慮できる可能性があり,今後の学術的・社会的意義は大きいと考えている.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (29 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (3 results) Journal Article (18 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 17 results,  Open Access: 8 results) Presentation (8 results) (of which Int'l Joint Research: 5 results)

  • [Int'l Joint Research] ケンブリッジ大学(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ケンブリッジ大学(英国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] グルノーブル・アルプス大学(フランス)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Coupled effects of particle shape and inter-particle friction on quasi-static shear behavior of dry granular materials studied by 2D LS-DEM2024

    • Author(s)
      Jiang, H., Kawamoto, R., Matsushima, T.
    • Journal Title

      Journal of Structural Engineering, A

      Volume: 70A Issue: 0 Pages: 141-154

    • DOI

      10.11532/structcivil.70A.141

    • ISSN
      1881-820X
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quantifying the Surface Roughness Evaluation of Railway Ballast Grain Under Rotating Drum Abrasion2023

    • Author(s)
      Opu Chandra Debanath, Takashi Matsushima, Shuichi Adachi, and Masahiro Miwa
    • Journal Title

      Proceedings of 13th Int. Conf. on Geotechnique, Construction Materials & Environment

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Calibration of railway ballast modeling using level set discrete element method2023

    • Author(s)
      Jiang, H., Debanath, O.C., Kawamoto, R., Matsushima, T., Adachi, S., Miwa, M.
    • Journal Title

      Proc. ICCES2023

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Particle Interaction Models in Clay Minerals for Discrete Element Method: Addressing Orientation, Offset, and Overlap Limitations2023

    • Author(s)
      Zhipeng Yu
    • Journal Title

      GeoKanto 2023

      Volume: 1

    • Related Report
      2023 Annual Research Report
  • [Journal Article] RHEOLOGY OF SEGREGATED BI-DISPERSE GRANULAR FLOW IN AN INCLINED PLANE2023

    • Author(s)
      JIANG Haoran、JIANG Xiaoyu、MATSUSHIMA Takashi
    • Journal Title

      Journal of JSCE

      Volume: 11 Issue: 2 Pages: n/a

    • DOI

      10.2208/journalofjsce.22-15035

    • ISSN
      2187-5103
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Saturated hydraulic conductivity of compacted bentonite?sand mixtures before and after gas migration in artificial seawater2023

    • Author(s)
      Watanabe Yasutaka、Yokoyama Shingo、Shimbashi Misato、Yamamoto Yoichi、Goto Takahiro
    • Journal Title

      Journal of Rock Mechanics and Geotechnical Engineering

      Volume: 15 Issue: 1 Pages: 216-226

    • DOI

      10.1016/j.jrmge.2022.01.015

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three-dimensional shape distribution of lunar regolith particles collected by the Apollo and Luna programs2022

    • Author(s)
      Tsuchiyama Akira、Sakurama Takashi、Nakano Tsukasa、Uesugi Kentaro、Ohtake Makiko、Matsushima Takashi、Terakado Kazuo、Galimov Erik M.
    • Journal Title

      Earth, Planets and Space

      Volume: 74 Issue: 1 Pages: 172-172

    • DOI

      10.1186/s40623-022-01737-9

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Shape effects on shear behavior of superdisk systems studied by level set discrete element method2022

    • Author(s)
      Jiang, H., Kawamoto, R., Matsushima, T.
    • Journal Title

      Proc. 6th International Conference on Advances in Civil Engineering (ICACE-2022)

      Volume: 1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effects of alteration on shear characteristics of compacted Ca-bentonite immersed in alkaline solutions2022

    • Author(s)
      Watanabe Yasutaka、Yokoyama Shingo
    • Journal Title

      Soils and Foundations

      Volume: 62 Issue: 5 Pages: 101199-101199

    • DOI

      10.1016/j.sandf.2022.101199

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Liquid bridge contribution to shear behavior of unsaturated soil: modeling and application to a micromechanics model2021

    • Author(s)
      Fukushima Yo、Higo Yosuke、Matsushima Takashi、Otake Yu
    • Journal Title

      Acta Geotechnica

      Volume: 16 Issue: 9 Pages: 2693-2711

    • DOI

      10.1007/s11440-021-01263-0

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of disordered pore distribution on the fracture of brittle porous media studied by bonded DEM2021

    • Author(s)
      Huang Quanshui、Ma Gang、Matsushima Takashi、Zhou Wei、Lin Mingchun
    • Journal Title

      Soils and Foundations

      Volume: 61 Issue: 4 Pages: 1003-1017

    • DOI

      10.1016/j.sandf.2021.05.005

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] RHEOLOGICAL AND MICROSTRUCTURAL CHARACTERISTICS IN GRANULAR SHEAR FLOW OF 2D ELLIPTICAL PARTICLES2021

    • Author(s)
      JIANG Xiaoyu、MATSUSHIMA Takashi
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

      Volume: 77 Issue: 2 Pages: I_297-I_305

    • DOI

      10.2208/jscejam.77.2_I_297

    • NAID

      130008150524

    • ISSN
      2185-4661
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] MELTING AND SOLIDIFICATION EXPERIMENT OF LUNAR SOIL SIMULANT, FJS-1 BY ISOTROPIC AND SURFACE HEATING2021

    • Author(s)
      OTA Masahiro、WATANABE Takuya、MATSUSHIMA Takashi
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

      Volume: 77 Issue: 2 Pages: I_319-I_328

    • DOI

      10.2208/jscejam.77.2_I_319

    • NAID

      130008150534

    • ISSN
      2185-4661
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] QUANTITATIVE EVALUATION OF ESTIMATED RESIDUAL SETTLEMENT OF POORLY-GRADED CRUSHED STONE LAYERS BY USING DEM2021

    • Author(s)
      KONO Akiko、MATSUSHIMA Takashi
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))

      Volume: 77 Issue: 2 Pages: I_339-I_348

    • DOI

      10.2208/jscejam.77.2_I_339

    • NAID

      130008150541

    • ISSN
      2185-4661
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of grain shape on the dynamics of granular materials in 2D rotating drum2021

    • Author(s)
      Preud’homme Nicolas、Opsomer Eric、Vandewalle Nicolas、Lumay Geoffroy
    • Journal Title

      EPJ Web of Conferences

      Volume: 249 Pages: 06002-06002

    • DOI

      10.1051/epjconf/202124906002

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Statistical properties of cell stresses in 2D granular solids2021

    • Author(s)
      Matsushima Takashi、Blumenfeld Raphael
    • Journal Title

      EPJ Web of Conferences

      Volume: 249 Pages: 02006-02006

    • DOI

      10.1051/epjconf/202124902006

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Swelling pressure of compacted bentonite acting on constraining material with deformability2021

    • Author(s)
      Watanabe Yasutaka、Tanaka Yukihisa
    • Journal Title

      Geotechnique

      Volume: 1 Issue: 2 Pages: 1-10

    • DOI

      10.1680/jgeot.20.p.348

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Shear characteristics of compacted bentonites immersed in KOH and KOH-NaOH solutions2021

    • Author(s)
      Watanabe, Y., Yokoyama, S.
    • Journal Title

      Japanese Geotechnical Society Special Publication

      Volume: 9(2) Pages: 8-13

    • NAID

      130008103303

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] モンモリロナイトの静的締固め特性と間隙構造の関係2024

    • Author(s)
      渡邊保貴
    • Organizer
      令和6年度土木学会全国大会年次学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Exploring the use of focus stacking to evaluate the surface roughness of railway ballast grains2023

    • Author(s)
      Opu Chandra Debanath
    • Organizer
      令和5年度地盤工学研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Cell-Based Microscopic Insights into Granular Systems: Combined Effects of Shape and Friction2023

    • Author(s)
      Haoran Jiang
    • Organizer
      令和5年度地盤工学研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Grain-scale behavior of erosion/sedimentation process studied by DEM/CFD coupling simulation2023

    • Author(s)
      Takashi Matsushima
    • Organizer
      DEM9
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observation of Grain-Scale Erosion/Sedimentation Process using DEM/CFD Coupling Simulation2023

    • Author(s)
      Takashi Matsushima
    • Organizer
      IRN GeoMech workshop in hydomechanical instabilities
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 4-cell analogical model to describe plastic shear behavior of granular solid2023

    • Author(s)
      T. Matsushima, Y. Higo, Y. Otake
    • Organizer
      International Conference on Nonlinear Solid Mechanics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 4-cell analogical model to describe plastic shear behavior of granular geomaterials2023

    • Author(s)
      Matsushima, T., Higo, Y., Otake, Y.
    • Organizer
      Aleart Geomaterial workshop
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Post Liquefaction Behavior: as a Complex Grain-Water Interaction2023

    • Author(s)
      Takashi Matsushima
    • Organizer
      ISBEC2023 (Interdisciplinary symposium on the development of bioresource engineering based on the analysis of colloid aggregation and electrokinetic phenomena)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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