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Behavior of Composite Unreinforced Masonry–Fiber-Reinforced Polymer Wall Assemblages Under In-Plane Loading |
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| Authors: | Ahmad A. Hamid Wael W. El-Dakhakhni Zeyad H. R. Hakam Mohamed Elgaaly |
| Affiliation: | 1Professor, McMaster Univ. Center for Effective Design of Structures, Hamilton, Ontario, Canada, L8S 4L7; formerly, Dept. of Civil and Architectural Engineering, Drexel Univ., Philadelphia, PA 19104. E-mail: hamida@mcmaster.ca 2Post-doctoral Fellow, McMaster Univ. Center for Effective Design of Structures, Hamilton, Ontario, Canada L8S 4L7; formerly, Structural Engineering Dept., Ain Shams Univ., Cairo, Egypt. E-mail: eldak@mcmaster.ca 3Senior Project Controls Engineer, Bechtel Power Corporation, Frederick, MD 21703. E-mail: zhakam@bechtel.com 4Professor, Dept. of Civil and Architectural Engineering, Drexel Univ., Philadelphia, PA 19104. E-mail: elgaalym@drexel.edu |
| Abstract: | An experimental investigation was conducted to study the in-plane behavior of face shell mortar bedded unreinforced masonry (URM) wall assemblages retrofitted with fiber-reinforced polymer (FRP) laminates. Forty-two URM assemblages were tested under different stress conditions present in masonry shear and infill walls. Tests included prisms loaded in compression with different bed joint orientation (on/off-axis compression), diagonal tension specimens, and specimens loaded under joint shear. The behavior of each specimen type is discussed with emphasis on modes of failure, strength and deformation characteristics. Results showed that the application of FRP laminates on URM has a great influence on strength, postpeak behavior, as well as altering failure modes and maintaining the specimen integrity. The retrofitted specimens reached compressive strength of 1.62–5.64 times that of their unretrofitted counterparts, depending on the bed joint orientation, and joint shear strength increased by eightfold. |
| Keywords: | Composite masonry Concrete masonry Fiber reinforced plastics Retrofitting Seismic hazard Shear walls |