Analysis-oriented model for concrete and masonry confined with fiber reinforced mortar

Alessio Cascardi, Maria Antonietta Aiello, Thanasis Triantafillou

    Research output: Contribution to journalArticle

    Abstract

    Analysis-oriented model (AOM) is a theoretical approach intended to analyze and design systems by applying the notions throughout the organization of a series of equations in one or more iterative cycle. The stress–strain curve of an fiber reinforced polymer (FRP) confined column is evaluated using an incremental procedure, which takes into account the interaction between the confining material and the column itself. Many AOMs have been developed for FRP-confined columns, while the prediction of the behavior of the jacketing with fiber reinforced mortar (FRM) is, currently, still a lack of the literature due to the relative recent development of studies about this new confining composite material. The aim of this paper is to present and discuss a new AOM able to deliver the axial stress–strain law of an axially loaded column made of concrete or masonry and with circular or square cross-section, when FRM-confinement is provided. A step-by-step iteration of the axial strain was adopted considering that the column reacts elastically and the FRM confinement remains un-cracked in each single step. The elastic secant modulus of the column was, thereafter, considered in order to catch its non-linear behavior and a further secant modulus was also computed for modelling the damage evolution of the FRM confinement when increasing the axial load. Finally, a parametric study allowed to check the correct interpretation of the phenomenon. Moreover, the theoretical versus the experimental comparison validated the accuracy of the proposed model.

    Original languageEnglish (US)
    Article number202
    JournalMaterials and Structures/Materiaux et Constructions
    Volume50
    Issue number4
    DOIs
    StatePublished - Aug 1 2017

    Fingerprint

    Mortar
    Concretes
    Fibers
    Polymers
    Axial loads
    Elastic moduli
    Composite materials

    Keywords

    • Analysis-oriented model
    • Concrete
    • Confinement
    • Fiber reinforced mortar (FRM)
    • Masonry

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction
    • Materials Science(all)
    • Mechanics of Materials

    Cite this

    Analysis-oriented model for concrete and masonry confined with fiber reinforced mortar. / Cascardi, Alessio; Aiello, Maria Antonietta; Triantafillou, Thanasis.

    In: Materials and Structures/Materiaux et Constructions, Vol. 50, No. 4, 202, 01.08.2017.

    Research output: Contribution to journalArticle

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