Diagonal tensile tests on historical brick masonry wallets strengthened with fabric reinforced cementitious mortar

Ihsan Engin Bal, Alper Ilki, Irem A. Balci, Medine Ispir, Pelin E. Mezrea

    Research output: Contribution to journalArticleAcademicpeer-review

    Abstract

    Masonry structures comprise a significant portion of the historical building stock all over the world. Previous
    studies have clearly pointed out that unreinforced masonry buildings are vulnerable against extreme loading
    conditions, such as seismic actions. Therefore, strengthening is inevitable in most cases for historical masonry to
    withstand severe loads. In this paper, the efficiency of fabric reinforced cementitious matrix is investigated
    experimentally by using diagonal tension tests. Fourteen wallets with a nominal size of 750x750x235 mm were
    produced with using solid clay bricks and a low-strength mortar. The bricks were collected from the structural
    walls of an early-20th century building under restoration. The low-strength mortar represents the historical
    mortar commonly used in similar historical brick masonry buildings located in Istanbul, Turkey. By testing the
    specimens under monotonic diagonal compression loads, the effects of different types of plasters on the wallet
    surface, varying types of fibers used in textile reinforcement and anchors used for the connection between FRCM
    and substrate are investigated. Although the wallet samples have inherent shortcomings in representing overall
    component response accurately, still the qualitative findings are enlightening the effectiveness of the FRCM
    system by increasing shear strength, stiffness (shear modulus) and dissipated energy of the masonry wallets. The
    strengthened specimens were failed due to shear sliding along a bed joint and/or by a stair-shaped separation
    while the refence specimens were failed due to the splitting of the specimen into two parts in the stair-stepped
    shape and a slipping through a bed joint.
    Original languageEnglish
    Article number11
    Pages (from-to)935-946
    Number of pages12
    JournalStructures
    Volume33
    Publication statusPublished - 17 May 2021

    Keywords

    • earthquakes
    • wall strengthening
    • sensor technology
    • FRCM
    • masonry

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