| Autor: |
Rui Hao, Weiwei Lin, Nasser A. Al-Nuaimi, Rami A. Hawileh, Jamal A. Abdalla, Mohammed Z.E.B. Elshafie |
| Přispěvatelé: |
Department of Civil Engineering, Qatar University, American University of Sharjah, Aalto-yliopisto, Aalto University |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Popis: |
Funding Information: The funding for this research was provided by the National Priorities Research Program of the Qatar National Research Fund (A member of the Qatar Foundation) under the award no. NPRP 8-418-2-175. The statements made herein are solely the responsibility of the authors and do not necessarily reflect the opinions of the research sponsor. The authors would like to also thank Dr. Paolo Casadei from Kerakoll Spa for providing and installing the galvanized steel mesh sheets. Publisher Copyright: © 2022 The Authors Steel reinforced polymers (SRP) are useful in a wide range of applications, including strengthening of existing reinforced concrete (RC) structures, due to their numerous advantages like high strength, low maintenance, light weight and low cost. As such, galvanized steel mesh (GSM) has emerged as an option in the strengthening of RC structures. Although numerous studies were performed on GSM strengthened RC beams, the durability of such strengthening systems is yet to be fully understood. This paper presents an experimental and numerical study to investigate the strengthening effect of GSM on RC beams as well as the time-depended behavior of RC beams with and without strengthening. Reinforced concrete beams without strengthening were used as control beams. For the strengthened beams, both high cord density galvanized steel mesh (HSM) and medium cord density galvanized steel mesh (MSM) were used after which the beams were exposed to Qatar atmospheric environment for different periods of time following 28 days of water curing. Finite element analyses using ABAQUS software were conducted to predict the mechanical behavior of the RC beams with and without strengthening. The results showed an improvement ranging from 46% ∼ 57% in the ultimate load of GSM strengthened beams, with a higher initial cracking load ranging from 3% ∼ 35% when compared to the unstrengthened beams. On the other hand, the time-dependent effect of the concrete has limited influence on the initial cracking load of both systems (before and after strengthening) while the ultimate load increased gradually with time due to the strength development of concrete. The results obtained from this study are useful in improving the design, construction, and maintenance of RC beams strengthened with GSM laminates. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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