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Construction of Digitalized Microstructure of Cementitious Materials for Multiscale Large-Scale Mass Transport Analysis

Research Project

Project/Area Number 21H04572
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 22:Civil engineering and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Ishida Tetsuya  東京大学, 大学院工学系研究科(工学部), 教授 (60312972)

Co-Investigator(Kenkyū-buntansha) 高橋 佑弥  東京大学, 大学院工学系研究科(工学部), 准教授 (10726805)
市村 強  東京大学, 地震研究所, 教授 (20333833)
高木 周  東京大学, 大学院工学系研究科(工学部), 教授 (30272371)
Project Period (FY) 2021-04-05 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥42,380,000 (Direct Cost: ¥32,600,000、Indirect Cost: ¥9,780,000)
Fiscal Year 2023: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2022: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2021: ¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Keywordsマルチスケールモデル / セメント硬化体 / コンクリート / 拡散係数 / 微細構造 / 物質輸送解析 / セメント・コンクリート / ナノ構造 / セメント水和物
Outline of Research at the Start

セメント硬化体の空隙を再現したデジタル微細構造を創り出し、分子レベルの挙動に立脚した数値解析モデルと大規模数値解析を組み合わせることによって、これまでのマルチスケールモデル研究においてミッシングリンクとなっている、ナノ~マイクロメートルオーダーの空間スケールで展開される現象を直結して評価することを目指す。セメント・コンクリート内部の物質移動の機構解明や既存モデルの精度向上を達成するとともに、物質浸透を一切許さない革新的な建設材料の開発に資する情報を得る。

Outline of Final Research Achievements

A digital microstructure field encompassing nanoscale to micrometer scale was generated using a method combining convolutional neural networks and generative adversarial networks from 2D SEM images. Large-scale mass transport analysis was conducted using the lattice Boltzmann method. Comparing the diffusion coefficients of hardened cement pastes made with ordinary Portland cement and fly ash, it was revealed that the diffusion delay in the fly ash case is due to delays caused by the electric double layer and the connectivity of nanopores smaller than 10 nm.

Academic Significance and Societal Importance of the Research Achievements

これまで、セメント・コンクリート材料を対象として、ナノ空間における分子レベルの挙動と、マイクロメートルオーダーの空間スケールで展開される物質輸送現象を直結して評価するマルチスケール解析技術が十分ではなかった。本研究によって、特に微細構造中のイオン拡散に与える支配的要因が明らかになった。これにより、コンクリート構造物の耐久性を損なう劣化因子の制御と、内部侵入を遮断する新しい材料開発や設計法の高度化につながる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Comments on the Screening Results   Annual Research Report
  • Research Products

    (22 results)

All 2024 2023 2022 2021

All Journal Article (16 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 16 results,  Open Access: 15 results) Presentation (6 results) (of which Int'l Joint Research: 6 results,  Invited: 3 results)

  • [Journal Article] Effective diffusivity of hardened cement paste from 3D microstructures: A critical comparison of real and virtual microstructures2023

    • Author(s)
      Limtong Pakpoom、Patel Ravi A.、Takahashi Yuya、Ishida Tetsuya
    • Journal Title

      Cement and Concrete Composites

      Volume: 144 Pages: 105299-105299

    • DOI

      10.1016/j.cemconcomp.2023.105299

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Numerical evaluation on the effect of rebar corrosion on long-term structural behavior of underground RC culverts2023

    • Author(s)
      Han Sun-Jin、Ishida Tetsuya、Tsuchiya Satoshi
    • Journal Title

      Structures

      Volume: 48 Pages: 1920-1931

    • DOI

      10.1016/j.istruc.2023.01.081

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Consideration of coupling of crack development and corrosion in assessing the reliability of reinforced concrete beams subjected to bending2023

    • Author(s)
      Wang Tiao、Li Chunhe、Zheng Jian-jun、Hackl Jurgen、Luan Yao、Ishida Tetsuya、Medepalli Satya
    • Journal Title

      Reliability Engineering, System Safety

      Volume: 233 Pages: 109095-109095

    • DOI

      10.1016/j.ress.2023.109095

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multiscale chemo-mechanical modeling of concrete expansion with free lime-based expansive additives under restraint conditions2023

    • Author(s)
      Gupta Mayank、Igarashi Go、Takahashi Yuya、Ishida Tetsuya
    • Journal Title

      Cement and Concrete Composites

      Volume: 141 Pages: 105126-105126

    • DOI

      10.1016/j.cemconcomp.2023.105126

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Multiscale finite element analysis of earthquake-induced damage on underground RC culverts: The role of reinforcing bar corrosion2023

    • Author(s)
      Han Sun-Jin、Ishida Tetsuya、Tsuchiya Satoshi
    • Journal Title

      Structures

      Volume: 55 Pages: 763-777

    • DOI

      10.1016/j.istruc.2023.06.050

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Investigating the effects of cracks and low-calcium supplementary cementitious materials on steel fiber corrosion in cement paste2023

    • Author(s)
      Chaimongkhol Chananun、Medepalli Satya、Zheng Yuqian、Matsuda Taku、Ishida Tetsuya、Wang Tiao
    • Journal Title

      Construction and Building Materials

      Volume: 399 Pages: 132554-132554

    • DOI

      10.1016/j.conbuildmat.2023.132554

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multiscale expansion modeling of concrete with free lime-based expansive additives under isotropic conditions using poromechanics2023

    • Author(s)
      Gupta Mayank、Igarashi Go、Takahashi Yuya、Ishida Tetsuya
    • Journal Title

      Journal of Building Engineering

      Volume: 77 Pages: 107554-107554

    • DOI

      10.1016/j.jobe.2023.107554

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] FUTURE EVALUATION OF REPAIR EFFECT ON SALT DAMAGE PROGRESS AND LOAD CARRYING CAPCITY FOR RC JETTY SUPERSTRUCTURE USING MULTI-SCALE ANALYSIS2023

    • Author(s)
      高橋 智彦, 金廣 琴乃, 土屋 智史, 石田 哲也
    • Journal Title

      Japanese Journal of JSCE

      Volume: 79 Issue: 9 Pages: n/a

    • DOI

      10.2208/jscejj.22-00365

    • ISSN
      2436-6021
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Estimation of Corrosion Risk Using Concrete Electrical Resistivity Model2022

    • Author(s)
      Suzuki Mika、Ishida Tetsuya
    • Journal Title

      Journal of Advanced Concrete Technology

      Volume: 20 Issue: 6 Pages: 389-403

    • DOI

      10.3151/jact.20.389

    • ISSN
      1346-8014, 1347-3913
    • Year and Date
      2022-06-28
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical Simulation of Dimensional Stability of Precast Segments Exposed to Solar Radiation During Yard Storage2022

    • Author(s)
      Igarashi Go、Ichimiya Mamoru、Ohya Fumito、Ishida Tetsuya
    • Journal Title

      Journal of Advanced Concrete Technology

      Volume: 20 Issue: 3 Pages: 200-211

    • DOI

      10.3151/jact.20.200

    • ISSN
      1346-8014, 1347-3913
    • Year and Date
      2022-03-16
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Multiscale modeling of steel corrosion in concrete based on micropore connectivity2022

    • Author(s)
      Ohno Motohiro、Limtong Pakpoom、Ishida Tetsuya
    • Journal Title

      Journal of Building Engineering

      Volume: 47 Pages: 103855-103855

    • DOI

      10.1016/j.jobe.2021.103855

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] PREDICTION OF LONGITUDINAL CRACKS AND EVALUATION OF LOAD CARRYING CAPACITY FOR PC GIRDERS USING MULTI-SCALE ANALYSIS2022

    • Author(s)
      土屋智史、渡邊忠朋、 斉藤成彦、 牧剛史、 石田哲也
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures)

      Volume: 78 Issue: 1 Pages: 13-29

    • DOI

      10.2208/jscejmcs.78.1_13

    • NAID

      130008143384

    • ISSN
      2185-6567
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Scalable Finite-Element Viscoelastic Crustal Deformation Analysis Accelerated with Data-Driven Method2022

    • Author(s)
      Fujita Kohei、Murakami Sota、Ichimura Tsuyoshi、Hori Takane、Hori Muneo、Lalith Maddegedara、Ueda Naonori
    • Journal Title

      2022 IEEE/ACM Workshop on Latest Advances in Scalable Algorithms for Large-Scale Heterogeneous Systems (ScalAH)

      Volume: - Pages: 18-25

    • DOI

      10.1109/scalah56622.2022.00008

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] GPU Porting of Scalable Implicit Solver with Green’s Function-Based Neural Networks by OpenACC2022

    • Author(s)
      Fujita Kohei、Kikuchi Yuma、Ichimura Tsuyoshi、Hori Muneo、Maddegedara Lalith、Ueda Naonori
    • Journal Title

      Lecture Notes in Computer Science

      Volume: - Pages: 73-91

    • DOI

      10.1007/978-3-030-97759-7_4

    • ISBN
      9783030977580, 9783030977597
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical Simulations of Chloride Transport in Concrete Considering Connectivity of Chloride Migration Channels in Unsaturated Pores2021

    • Author(s)
      Nukushina Tatsuya、Takahashi Yuya、Ishida Tetsuya
    • Journal Title

      Journal of Advanced Concrete Technology

      Volume: 19 Issue: 7 Pages: 847-863

    • DOI

      10.3151/jact.19.847

    • NAID

      130008068813

    • ISSN
      1346-8014, 1347-3913
    • Year and Date
      2021-07-29
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental investigation of pozzolanic reaction and curing temperature-dependence of low-calcium fly ash in cement system and Ca-Si-Al element distribution of fly ash-blended cement paste2021

    • Author(s)
      Wang Tiao、Ishida Tetsuya、Gu Rui、Luan Yao
    • Journal Title

      Construction and Building Materials

      Volume: 267 Pages: 121012-121012

    • DOI

      10.1016/j.conbuildmat.2020.121012

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Enhanced performance modeling for low calcium supplementary cementitious materials: Current and future prospects2024

    • Author(s)
      T. Ishida, T. Wang and S. MEDEPALLI
    • Organizer
      INDIAN CONCRETE INSTITUE: International symposium on innovative world of concrete (IWC-24), India, 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ADVANCING CONCRETE STRUCTURES DESIGN AND MAINTENANCE THROUGH MULTI-SCALE AND MULTI-PHYSICS MODELING-BASED DIGITAL TWIN TECHNOLOGY2023

    • Author(s)
      T. Ishida, R. Kurihara, Y. Takahashi, SJ Han, S. Tsuchiya
    • Organizer
      FraMCoS-11, India
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Innovative Digital Twin Applications in Concrete Structures: Towards Smarter Design and Maintenance2023

    • Author(s)
      T. Ishida
    • Organizer
      CARRS 2023, IIT Hyderabad, India
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Bottom-up modeling of ion diffusivity from two-scale pore networks2022

    • Author(s)
      Pakpoom Limtong, Ravi A. Patel, Yuya Takahashi and Tetsuya Ishida
    • Organizer
      RILEM WEEK 2022 Phd Courses Poster Competition, 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of Expansive Agent Model in a Multi-scale Thermodynamic Framework Based on Hydration and Microstructure Formation2021

    • Author(s)
      Kolneath Pen, Tetsuya Ishida, Igarashi Go, Yuya Takahashi, Shinya Ito
    • Organizer
      International RILEM Conference on Early-age and Long-term Cracking in RC Structures
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of Expansive Additives on the Early Age Elastic Modulus Development of Cement Paste by Ambient Response Method (ARM)2021

    • Author(s)
      Mayank Gupta, Igarashi Go, Jose Granja, Miguel Azenha, Tetsuya Ishida
    • Organizer
      International RILEM Conference on Early-age and Long-term Cracking in RC Structures
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research

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

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