Design considerations for prefabricated composite jackets for structural repair: Parametric investigation and case study
Article
Article Title | Design considerations for prefabricated composite jackets for structural repair: Parametric investigation and case study |
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ERA Journal ID | 3731 |
Article Category | Article |
Authors | Mohammed, Ali A. (Author), Manalo, Allan (Author), Ferdous, Wahid (Author), Abousnina, Rajab (Author), Alajarmeh, Omar (Author), Vijay, P.V. (Author) and Benmokrane, Brahim (Author) |
Journal Title | Composite Structures |
Journal Citation | 261, pp. 1-14 |
Article Number | 113288 |
Number of Pages | 14 |
Year | 2021 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0263-8223 |
1879-1085 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compstruct.2020.113288 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S0263822320332141 |
Abstract | Prefabricated fiber-reinforced polymer (FRP) repair systems are becoming popular for structural repair because FRPs superior resistance to corrosion and weathering. Several parameters impact the effectiveness of this type of repair, including the structural continuity provided by the joining system and grout properties. This study numerically investigated the effects of these critical design parameters to generate new knowledge and understand fundamental structural behaviour of a prefabricated composite repair system. The results reveal that the effective transverse tensile strength of FRP joint should be as low as 20% of the jacket strength for structural repairs. Moreover, grout stiffness dictated the stress transfer between the core and outer jacket. Increasing the compressive strength of the grout delayed grout cracking and degradation, accompanied by a rapid increase in FRP joint strain. Lastly, numerical simulation of a corroded steel column in an actual bridge shows that the application of the FRP jacket improves the strength capacity by 320%, which is 85% higher than that of the conventional FRP repair system. This study provides useful information for optimally designing and effectively using prefabricated composite jackets for structural repairs. |
Keywords | Damage; Deterioration; Structural repair; Rehabilitation; Prefabricated FRP jacket |
ANZSRC Field of Research 2020 | 400510. Structural engineering |
Byline Affiliations | School of Civil Engineering and Surveying |
Centre for Future Materials | |
West Virginia University, United States | |
University of Sherbrooke, Canada | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6129/design-considerations-for-prefabricated-composite-jackets-for-structural-repair-parametric-investigation-and-case-study
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