Impacts of principal stress rotation on the nonlinearity of strain-hardening cementitious composites with fibers

Koichi Maekawa, Kohei Nagai, Benny Suryanto

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    An experimental program was conducted to investigate the effects of simultaneous opening-sliding of multiple cracks on the behaviour of strain-hardening cementitious composite plates. Newly proposed testing method was developed to reproduce possible rotating principal axis during the material strain-hardening. The experimental results showed he change in principal stress direction has a substantial impact on the macroscopic plate behaviours including multi-directional cracking pattern, and reductions in strength, ductility, and initial stiffness. A space-averaged constitutive model for this type of material was developed and further incorporated into FE analysis program. The model simulated reasonably various responses observed in the experiment and demonstrated the reductions observed were attributed to the lack of shear transfer across the multiple cracks. Further analyses of shear-critical R/SHCC panels and beams were carried out and confirmed the applicability of the model to simulate the behaviours at structural levels. Finally, this paper briefly presents our recent attempt to improve the structural performance with robust SHCC material under stress field rotation.

    Original languageEnglish
    Title of host publicationProceedings of the 2nd International RILEM Conference on Strain Hardening Cementitious Composites (SHCC2-Rio)
    EditorsR D Toledo Filho, F A Silva, E A B Koenders, E M R Fairbairn
    Place of PublicationBagneux
    PublisherRILEM
    Pages329 - 337
    Number of pages9
    ISBN (Electronic)978-2-35158-121-6
    ISBN (Print)978-2-35158-120-9
    Publication statusPublished - 2011
    Event2nd International RILEM Conference on Strain Hardening Cementitious Composites - Rio de Janeiro, Brazil
    Duration: 12 Dec 201114 Dec 2011

    Publication series

    NameRILEM Proceedings
    Volume81
    ISSN (Print)1461-1147

    Conference

    Conference2nd International RILEM Conference on Strain Hardening Cementitious Composites
    Abbreviated titleSHCC2-Rio
    Country/TerritoryBrazil
    CityRio de Janeiro
    Period12/12/1114/12/11

    Keywords

    • CRACKING
    • MODEL

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