Innovative flexural strengthening of reinforced concrete columns using carbon-fiber anchors

Ioannis Vrettos, Efstathia Kefala, Thanasis Triantafillou

    Research output: Contribution to journalArticle

    Abstract

    This paper presents the results of an experimental program that aimed to study the behavior of reinforced concrete (RC) columns under simulated seismic loading strengthened in flexure with anchored carbon-fiber sheets. The role of different parameters is examined by comparing the lateral load-versus- displacement response characteristics (peak force, drift ratios, energy dissipation, and stiffness). These parameters included the number of anchors and the volume of fibers in each anchor. The results were combined with a simple analytical model to yield values for the effective strain in the anchors at failure. It is concluded that carbon-fiber anchors provide a viable solution toward enhancing the flexural resistance of RC columns subjected to seismic loads, especially if they are made of a substantial amount of fibers.

    Original languageEnglish (US)
    Pages (from-to)63-70
    Number of pages8
    JournalACI Structural Journal
    Volume110
    Issue number1
    StatePublished - Jan 1 2013

    Fingerprint

    Anchors
    Carbon fibers
    Reinforced concrete
    Fibers
    Analytical models
    Energy dissipation
    Stiffness

    Keywords

    • Carbon-fiber anchors
    • Columns
    • Flexure
    • Seismic retrofitting
    • Strengthening

    ASJC Scopus subject areas

    • Civil and Structural Engineering
    • Building and Construction

    Cite this

    Innovative flexural strengthening of reinforced concrete columns using carbon-fiber anchors. / Vrettos, Ioannis; Kefala, Efstathia; Triantafillou, Thanasis.

    In: ACI Structural Journal, Vol. 110, No. 1, 01.01.2013, p. 63-70.

    Research output: Contribution to journalArticle

    Vrettos, I, Kefala, E & Triantafillou, T 2013, 'Innovative flexural strengthening of reinforced concrete columns using carbon-fiber anchors', ACI Structural Journal, vol. 110, no. 1, pp. 63-70.
    Vrettos, Ioannis ; Kefala, Efstathia ; Triantafillou, Thanasis. / Innovative flexural strengthening of reinforced concrete columns using carbon-fiber anchors. In: ACI Structural Journal. 2013 ; Vol. 110, No. 1. pp. 63-70.
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