Zuhair Al-Jaberi and John J. Myers
Zuhair Al-Jaberi, Lecturer, Department of Civil Engineering, Al-Nahrain University, Al-Jadriya, Baghdad 10072 Iraq, zkayc7@mst.edu
John J. Myers, Professor, Department of Civil, Architectural, and Environmental Engineering, Missouri University of Science and Technology, 1401 N. Pine St., 325 Butler-Carlton Hall, Rolla, MO, 65409 jmyers@mst.edu
ABSTRACT
The confinement of masonry columns using advanced composites is frequently used in order to upgrade the column capacity. In this study, the efficiency of using different types of advanced
composite for external confinement as a strengthening method is investigated. A wide range of experimental database of masonry column specimens has been collected from the results that are available in scientific literature. The major parameters considered in this study were the effects of composite material type and the effect of fiber reinforcement ratio. A comparison is also conducted between the experimental results and predicted capacity using available analytical models. As a result, all types of advanced composites presented a significant increase in both ultimate capacity and post-crack stiffness. In addition, the behavior of the masonry columns was significantly dependent on the type of fabric used. Different modes of failure were reported, including crushing of masonry block, as well as FRP debonding from the masonry substrate and debonding or slippage of the external fabric strengthening system within the cementitious matrix.
KEYWORDS: masonry columns, advanced composite, fiber reinforced polymer, fiber reinforced cementitious matrix, resin
