• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1998 Fiscal Year Final Research Report Summary

Unification of thermo-physics of materials and mechanics of concrete structures

Research Project

Project/Area Number 09450173
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 土木材料・力学一般
Research InstitutionThe University of Tokyo

Principal Investigator

MAEKAWA Koichi  The Univ.of Tokyo, Fac.of Eng.Prof., 大学院・工学系研究科, 教授 (80157122)

Co-Investigator(Kenkyū-buntansha) OKAMURA Hajime  The Univ.of Tokyo, Fac.of Eng.Prof., 工学系研究科, 教授 (30010664)
Project Period (FY) 1997 – 1998
KeywordsParallel computation / hydration / micro-pore structure / autogenous shrinkage / drying shrinkage / creep / mass transport / 物質移動,
Research Abstract

In this research, the unification of mechanics and thermo-dynamics of materials and structures is tackled for simultaneous evaluation of the total structural and material performances over the life span of concrete structures. The results of this research can be summarized as follows.
(1) An integrated computational system of 3D FE, structural analysis program, and 3D FE thermo-hygro physical analysis was proposed. This coupling method under multi-task operation enables engineers easily to iink independently developed computer codes even if being written different languages and algorithms, since each system is managed by operating system and the calculated results can be shared through the common data area.
(2) in the above system, the volume change of cementitious materials due to moisture, hydration, and heat transfer should be evaluated. In this study, we proposed an autogenous and drying shrinkage model based on micro mechanical physics. The shrinkage behavior is modeled from the capillary tension force and the development of micro-pore structure. This framework can be a predictive method of the volume change of concrete due to the autogenous, drying shrinkage and their combination for arbitrary conditions.
(3) A solidification model based on microphysical information for the prediction of both creep and shrinkage of hardening young concrete is proposed. Aggregates are idealized as suspended continuum media of perfect elasticity, whereas cement paste is treated as the solidified clusters having each mechanical property. The combination of both phases is used to represent the overall composite under unstable transient situations at early age. In this framework, basic creep, drying creep, and unrestrained shrinkage behavior can be evaluated in a unified manner without distinguishing each phenomena.

  • Research Products

    (30 results)

All Other

All Publications (30 results)

  • [Publications] 石田哲也,: "微視的機構に基づくコンクリートの自己収縮, 乾燥収縮及びその複合に関する解析的検討" 土木学会論文集. No.578/v-37. 111-121 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ishida, T.: "Micro-physical approach to coupled autogenous and drying shrinkage of concrete" Concrete under severe conditions 2 edited by Gjorv,O.E,Sakai,K.and Banthia,N,. 104-113 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Chaube, R.P: "An integrated computational framework for predicting the long-term durability of cementitious materials" Concrete under severe conditions 2 edited by Gjorv, O.E, Sakai, K.and Banthia, N,. 1904-1913 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Maekawa, K.: "Unification of thermo-physics of materials and mechanics of structures-Toward a life span simulator of structural concrete-" International workshop on concrete technology for a sustainable development in the 21^<21> century, Norway,. (Under publication). (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mabrouk,R.T.: "Solidification model of hardening concrete composite for predicting autogenous and drying shrinkage" Autogenous Shrinkage of Concrete Edited by Ei-ichi Tazawa. 309-318 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ishida,T.: "Micro-physical approach to coupled autogenous and drying shrinkage of 〓" Autogenous Shrinkage of Concrete Edited by Ei-ichi Tazawa. 319-330 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ishida,T.: "Modeling of pore water content in concrete under gencric drying-wetting conditions" Concrete Library of JSCE,. No.31. 275-287 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 石田哲也: "物質・エネルギーの生成・移動と材料力学的挙動の統合解析システム" コンクリート工学年次論文報告集. Vol,20 No.1. 233-238 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 高橋俊樹: "没入型多面ディスプレイを用いた3次元RCひび割れ解析結果のビジュアライゼーション" コンクリート工学年次論文報告集. Vol,20 No 1. 149-154 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mabrouk,R.T.: "Solidification model of hardening concrete composite for predicting creep and shrinkage of concrete" コンクリート工学年次論文報告集. Vol,20 No.1. 691-696 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 石田哲也: "鉄筋コンクリート構造性能の時間軸上での照査に向けて" 第53回土木学会年次学術講演会概要集 共通セッション. 250-251 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hosoda, A.: "Safety evaluation system of damaged structures and performance based design" IABSE colloquium CONCRETE MODEL CODE FOR ASIA. (投稿中). (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 石田哲也: "物質・エネルギーの生成・移動と変形・応力場に関する連成解析システム" 土木学会論文集. (投稿中).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 石田哲也: "種々の環境作用を受ける無機複合材料の品質と構造性能の経時変化予測システム" JCI材料設計支援システムに関するシンポジウム論文集. (投稿中).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 前川宏一: "微細空隙を有する固体の変形・損傷と物質・エネルギーの生成・移動に関する連成" 解析システム,第3回IMLシンポジウム講演集. (出版中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tetsuya ISHIDA: "Micro-Mechanics Prediction of Coupled Autogenous and Drying Shrinkage of Concrete" J.of Materials, Concrete Structure and Pavements. No.578/V37. 111-121 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ishida, T: "Micro-physical approach to coupled autogenous and drying shrinkage of concrete" Concrete under severe conditions. 2. 104-113 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Chaube, R.P: "An integrated computational framework for predicting the long-term durability of cementitious materials" Concrete under severe conditions. 2. 1904-1913 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Maekawa, K: "Unification of thermo-physics of materials and mechanics of structures -Toward a life span simulator of structural concrete-" International workshop on concrete technology for a sustainable development in the 21^<st> century, Norway. (Under publication). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mabrouk, R.T.: "Solidification model of hardening concrete composite for predicting autogenous and drying shrinkage" Autogenous Shrinkage of Concrete E&FN SPON. 309-318 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ishida, T: "Micro-physical approach to coupled autogenous and drying shrinkage of concrete" Autogenous Shrinkage of Concrete E&FN SPON. 319-330 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ishida, T: "Modeling of pore water content in concrete under generic drying-wetting conditions" Concrete Library of JSCE. No.31. 275-287 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.ISHIDA: "An Integrated Computational Systems of Mass Energy Generation and Transport and Material Mechanics Behavior" Proc.of JCI. Vol.20 No1. 233-238 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.TAKAHASHI: "Visualization of Thye Dimensional RC Cracks at An Early Ago of Long-Term Deformation of RC Members" Proc.of JCI. Vol.20, No.1. 149-154 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mabrouk, R.T: "Solidification model of hardening concrete composite for predicting creep and shrinkage of concrete" Proc.of JCI. Vol.20, No.1. 691-696 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.ISHIDA: "Toward a evaluation system of RC structural Performances in its life-span" Proc.of JSCE. Vol.53. 250-251 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hosoda.A: "Safety evaluation system of damaged structures and performance based design" IABSE coiloquium CONCRETE MODEL CODE FOR ASIA. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.ISHIDA: "An integrated computational system of mass/energy generation, transport and mechanics of materials and structures" Proc.of JSCE. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.ISHIDA: "An integrated computational system for performance evaluation of cementitious materials and structures under various environmental actions" Proc.of JCI. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.MAEKAWA: "An integrated computational system of mass/energy generation, transport and mechanics of materials and structures" Proc.of IML Symoisium. Vol.3. (1998)

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

URL: 

Published: 1999-12-08  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi