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Multi-scale poromechanics of structural concrete with the expansion of crystal or amorphous products

Research Project

Project/Area Number 18H01507
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 22010:Civil engineering material, execution and construction management-related
Research InstitutionThe University of Tokyo

Principal Investigator

Takahashi Yuya  東京大学, 大学院工学系研究科(工学部), 准教授 (10726805)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2020: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2018: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Keywordsコンクリート / アルカリシリカ反応 / 凍害 / 遅延エトリンガイト生成 / 膨張材 / 複合劣化 / 耐久性力学 / エトリンガイト / ポロメカニクス / 膨張
Outline of Final Research Achievements

A computational scheme has been developed to evaluate the risk of crack propagation and the change in structural performance of reinforced concrete structures, where expansion and stress occur due to the formation of crystalline/amorphous materials. For expansion due to alkali-silica reaction (ASR), a computational model was developed to account for time-dependent changes in the physical properties of ASR gel products, and the applicability of the poro-mechanics model was extended to crystalline expansion by modeling the expansive additive reaction and delayed ettringite formation reaction. Using the developed scheme, the remaining life of a real road bridge structure with the combination of various material deteriorations and fatigue was quantitatively evaluated, and it was also shown that it is possible to predict disintegration on the upper surface of slabs, which has been attracting increasing attention in recent years.

Academic Significance and Societal Importance of the Research Achievements

アルカリシリカ反応などのコンクリートの内部膨張反応を取り扱い可能であったシミュレーションモデルの適用性を,膨張材による膨張や遅延エトリンガイト生成といった他の結晶生成に伴う膨張へ拡げ,コンクリートの膨張ひび割れ現象一般を取り扱い可能な計算モデルを構築した.異なる膨張現象を一つの統一的なモデル(ポロメカニクス)を用いて再現することで,各膨張現象の本質的理解や,複合的に膨張が生じる場合の挙動予測が可能となっている.これらモデルは既存の構造性能評価システムに実装されているため,即座に工学応用が可能であり,本研究内でも実道路構造物の劣化予測と予防保全的維持管理の戦略提案を行うに至っている.

Report

(4 results)
  • 2021 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (26 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (12 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 12 results,  Open Access: 3 results) Presentation (13 results) (of which Int'l Joint Research: 9 results)

  • [Int'l Joint Research] 浙江大学(中国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Time-dependent Effect of Expansion due to Alkali-silica Reaction on Mechanical properties of Concrete2021

    • Author(s)
      Ji Xi、Joo Hyo Eun、Yang Zhehui、Takahashi Yuya
    • Journal Title

      Journal of Advanced Concrete Technology

      Volume: 19 Issue: 6 Pages: 714-729

    • DOI

      10.3151/jact.19.714

    • NAID

      130008057082

    • ISSN
      1346-8014, 1347-3913
    • Year and Date
      2021-06-25
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of alkali-silica reaction model considering the effect of aggregate size2021

    • Author(s)
      Joo Hyo Eun、Takahashi Yuya
    • Journal Title

      Cement and Concrete Composites

      Volume: 122 Pages: 104149-104149

    • DOI

      10.1016/j.cemconcomp.2021.104149

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 道路橋鉄筋コンクリート床版上面における土砂化発生特徴に関する数値解析的検討2021

    • Author(s)
      古川智也,高橋佑弥
    • Journal Title

      コンクリート工学年次論文集

      Volume: 43(2) Pages: 421-426

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 種々の劣化作用を受けたRC床版の土砂化発生傾向に関する解析的検討2021

    • Author(s)
      須藤健,古川智也,高橋佑弥
    • Journal Title

      コンクリート構造物の補修,補強,アップグレード論文報告集

      Volume: 21 Pages: 283-288

    • NAID

      40022764707

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] スラブ軌道CAモルタルにおける温度変化と疲労の複合挙動に関する検討2021

    • Author(s)
      佐藤咲,魚地眞道,久保崇紀,土屋智史,高橋佑弥
    • Journal Title

      コンクリート構造物の補修,補強,アップグレード論文報告集

      Volume: 21 Pages: 173-178

    • NAID

      40022764254

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Macroscale and Microscale Studies on Time-Dependent Mechanical Properties of Concrete with Alkali Silica Reactions2020

    • Author(s)
      Okano Y.、Takahashi Y.
    • Journal Title

      Lecture Notes in Civil Engineering

      Volume: 101 Pages: 1881-1890

    • DOI

      10.1007/978-981-15-8079-6_173

    • ISBN
      9789811580789, 9789811580796
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanical properties of concrete with smeared cracking by alkali-silica reaction and freeze-thaw cycles2020

    • Author(s)
      Gong Fuyuan、Takahashi Yuya、Segawa Izuru、Maekawa Koichi
    • Journal Title

      Cement and Concrete Composites

      Volume: 111 Pages: 103623-103623

    • DOI

      10.1016/j.cemconcomp.2020.103623

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] ASR膨張が生じたコンクリートの力学特性における材令の影響に関する検討2020

    • Author(s)
      高橋佑弥,岡野佑亮,Yang Zhehui
    • Journal Title

      コンクリート工学年次論文集

      Volume: 42 Pages: 737-742

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ASR生成物の力学特性測定と構造解析モデルの取り扱いに関する研究動向2019

    • Author(s)
      高橋佑弥
    • Journal Title

      コンクリート工学

      Volume: 57(6) Pages: 454-460

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ASR劣化を受ける実物大鋼主桁上RC床版の 実環境暴露下における膨張変形挙動に関する解析的研究2019

    • Author(s)
      高橋佑弥,前島拓,岩城一郎,前川宏一
    • Journal Title

      構造工学論文集

      Volume: 65A Pages: 665-673

    • NAID

      130007791179

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ASRが生じるRC梁の膨張挙動と力学特性に及ぼす先行曲げひび割れの影響2018

    • Author(s)
      小川森平,高橋佑弥,前川宏一
    • Journal Title

      コンクリート工学年次論文集

      Volume: 40(1) Pages: 867-872

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Multi-scale computational modeling for concrete damage by mixed pore pressures - case of coupled alkali-silica reaction and cyclic freeze/thaw2018

    • Author(s)
      Fuyuan Gong, Yuya Takahashi, Koichi Maekawa
    • Journal Title

      Engineering Computations

      Volume: 35(6) Issue: 6 Pages: 2367-2385

    • DOI

      10.1108/ec-11-2017-0431

    • NAID

      120006781971

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Contribution of Alkali-Silica Reaction Gel on Time-dependent Mechanical Properties of Concrete2020

    • Author(s)
      Yuya Takahashi
    • Organizer
      6th International Conference on Construction Materials. ConMat’20
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Modeling the effect of fly ash on alkali-silica reaction in concrete considering the reduction of alkali concentration in pore water2020

    • Author(s)
      Ryo Taguchi
    • Organizer
      10th International Conference on Bridge Maintenance, Safety and Management
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Poromechanical models for time-dependent mechanical performance of concrete with ASR2020

    • Author(s)
      YuyaTAkahashi
    • Organizer
      10th International Conference on Bridge Maintenance, Safety and Management
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Long term expansions and deformations of real scale RC deck on steel girders caused by ASR2020

    • Author(s)
      Yuya Takahashi
    • Organizer
      10th International Conference on Bridge Maintenance, Safety and Management
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Analytical study about the expansion progress of concrete exposed to combiend alkali silica reactions and freezing thawing cycles2020

    • Author(s)
      Yuya Takahashi
    • Organizer
      4th international RIELM conference on Microstructure Related Durability of Cementitious Composites
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アルカリシリカ反応による膨張が生じたコンクリートの力学性能の経時変化に関する実験的検討2019

    • Author(s)
      高橋佑弥
    • Organizer
      第73回セメント技術大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] アルカリシリカ反応によって膨張したコンクリートの力学特性の経時変化とその要因に関する微視的考察2019

    • Author(s)
      高橋佑弥
    • Organizer
      土木学会第74回年次学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Macroscale and Microscale Studies on Timde-Dependent Mechanical Properties of Concrete with Alkali Silica Reactions2019

    • Author(s)
      Yusuke Okano
    • Organizer
      16th East Asia-Pacific Conference on Structural Engineering and Construction (EASEC16)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Relationships between Expansions and Mechanical Properties of Concrete under Coupled Freeze-thaw Cycles and Alkali-Silica Reactions2019

    • Author(s)
      Izuru Segawa
    • Organizer
      The 3rd ACF Symposium 2019 on Assessment and Intervention of Existing Structures
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Fatigue life Assessment of Initially and Time-dependently Deteriorated RC decks by Data assimilation2018

    • Author(s)
      Yuya Takahashi
    • Organizer
      2018 fib Congress
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Expansions and damage processes of concrete due to coupled alkali silica reactions and freeze-thaw cycles2018

    • Author(s)
      Izuru Segawa
    • Organizer
      8th International Conference of Asian Concrete Federation
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] コンクリートの凍結融解・ASR複合劣化における膨張・損傷過程の分析2018

    • Author(s)
      瀬川出
    • Organizer
      土木学会第73回年次学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 種々の促進環境条件がASR膨張の寸法依存性に与える影響に関する実験的検討2018

    • Author(s)
      高橋佑弥
    • Organizer
      第72回セメント技術大会
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2023-01-30  

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