1 Dynamic Response of Rubberized Concrete Columns with and without FRP 1 Confinement Subjected to Lateral Impact 2 Thong M. Pham 1 , X. Zhang 2 , M. Elchalakani 3 , A. Karrech 4 , Hong Hao 5 * and Aarin Ryan 6 3 Abstract 4 This study experimentally investigates the impact response of rubberized concrete columns 5 subjected to lateral impact. A pendulum impact testing apparatus was used to test the concrete 6 columns with varied rubber contents including 0%, 15%, and 30%. Fine and coarse aggregates 7 were replaced by crumb rubber with particle sizes of 2-5 mm and 5-7 mm, respectively. The 8 experimental results have shown that the rubberized concrete columns significantly reduce the 9 peak impact force (27% - 40%) and thus mitigate the risk of injury and even death if rubberized 10 concrete is used in roadside barriers. In addition, the rubberized concrete columns were more 11 flexible than the normal concrete columns. They could deflect twice the reference columns 12 before failure. Rubberized concrete significantly increased the impact energy absorption. The 13 columns with 15% and 30% crumb rubber showed an increase in the impact energy absorption 14 by 58% and 63% as compared to the reference columns. The rubberized concrete column 15 confined with FRP outperformed the reference columns in terms of both the energy absorption 16 1 Research Fellow, Center for Infrastructural Monitoring and Protection, School of Civil and Mechanical Engineering, Curtin University, Kent Street, Bentley, WA 6102, Australia. Email: [email protected] 2 Research Fellow, Center for Infrastructural Monitoring and Protection, School of Civil and Mechanical Engineering, Curtin University, Kent Street, Bentley, WA 6102, Australia. Email: [email protected] 3 Senior Lecturer, School of Civil, Environmental and Mining Engineering, the University of Western Australia, 35 Stirling Highway, WA 6009, Australia. Email: [email protected] 4 Associate Professor, School of Civil, Environmental and Mining Engineering, the University of Western Australia, 35 Stirling Highway, WA 6009, Australia. Email: [email protected] 5* John Curtin Distinguished Professor, Center for Infrastructural Monitoring and Protection, School of Civil and Mechanical Engineering, Curtin University, Kent Street, Bentley, WA 6102, Australia, and School of Civil Engineering, Guangzhou University, Guangzhou 510006, China. Corresponding author’s email: [email protected] 6 Former student, School of Civil, Environmental and Mining Engineering, the University of Western Australia, 35 Stirling Highway, WA 6009, Australia. Email: [email protected] © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Dynamic Response of Rubberized Concrete Columns with and without FRP Confinement Subjected to Lateral Impact
Jun 20, 2023
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