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Seismic and Durability Assessment of Externally Bonded FRP Retrofits in Reinforced Concrete Structures After 2018 Anchorage, AK Earthquake

Published

Author(s)

Sandra Milev, David Goodwin, Siamak Sattar, Shafique Ahmed, Jovan Tatar

Abstract

Externally bonded fiber-reinforced polymer (EBFRP) composites are a cost-effective material used for repairing and seismic retrofitting of existing concrete structures. Even though EBFRP has been extensively utilized in the past 20 years as seismic retrofits, there are few data documenting their performance in a real shaking event or after long-term use on concrete structures. In this study, semi-destructive and nondestructive techniques were employed to evaluate the performance and durability of EBFRP-retrofitted buildings that had experienced the 2018 Cook Inlet Earthquake in Anchorage, AK. The performance of EBFRP was evaluated and documented through photographic evidence. Acoustic sounding, infrared thermography and bond pull-off tests were utilized to evaluate the quality of bonding between EBFRP and concrete. EBFRP samples were also collected from building interiors and exteriors for chemical and thermal analysis to evaluate the long-term effects of environmental exposure. Although environmental conditions were found to have an effect on the bond between the EBFRP composite and concrete substrate, no major signs of earthquake damage were noted in the components retrofitted with EBFRP. Materials characterization results demonstrated no evidence of polymer matrix degradation in exterior EBFRP samples.
Proceedings Title
Seismic and Durability Assessment of Externally Bonded FRP Retrofits in Reinforced Concrete Structures After 2018 Anchorage, AK Earthquake
Volume
198
Conference Dates
July 1-3, 2020
Conference Location
Istanbul, TR
Conference Title
10th International Conference on FRP Composites in Civil Engineering (CICE 2020/2021)

Keywords

EBFRP retrofit, FRP composites , seismic, deterioration, reconnaissance, durability, materials characterization

Citation

Milev, S. , Goodwin, D. , Sattar, S. , Ahmed, S. and Tatar, J. (2021), Seismic and Durability Assessment of Externally Bonded FRP Retrofits in Reinforced Concrete Structures After 2018 Anchorage, AK Earthquake, Seismic and Durability Assessment of Externally Bonded FRP Retrofits in Reinforced Concrete Structures After 2018 Anchorage, AK Earthquake, Istanbul, TR, [online], https://doi.org/10.1007/978-3-030-88166-5_106 (Accessed July 3, 2022)
Created May 3, 2021, Updated May 10, 2022