Repair and strengthening of timber cantilever beams |
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| Authors: | Alaa A. Bashandy Alaa E. El-Habashi Ahmed K. Dewedar |
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| Affiliation: | 1. Civil Engineering Department, Faculty of Engineering, Menoufia University, Menoufia, Egypt;2. Architectural Engineering Department, Faculty of Engineering, Menoufia University, Menoufia, Egypt;3. Hydraulic Research Institute, Cairo, Egypt |
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| Abstract: | This research aims to study the feasibility of repair and strengthening of timber cantilever beams used in historic buildings. It is conducted to investigate the feasibility of using different valid materials and techniques to repair and strengthen timber cantilever beams in new and historic timber buildings. The study is performed in terms of structural performance as well as historic and architectural values. An experimental program of several different materials and techniques is executed. The results are driven in terms of initial cracking load, crack propagation for the tested samples at different loading stages, deflection values, and failure load for each repaired or strengthened material and technique. The main variables are timber types (new and historic), repair and strengthening materials (steel plates, Glass Fiber Reinforced Polymer wrap, and Carbon Fiber Reinforced Polymer laminates), repair or strengthening techniques (near surface mounted and externally bonded system), and cantilever length (1000 and 1250?mm). Test results indicated that using steel plates, glass fiber wrap, and carbon fiber laminates increases the value of failure loads and decreases the deflection at both; repaired and strengthened timber cantilever beams compared to control beams. |
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| Keywords: | Repair strengthening timber cantilever beam steel plate GFRP CFRP injection |
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