Experimental and numerical investigation of preloaded recycled concrete beams strengthened with CFRP
Abstract
Purpose
The use of recycled coarse aggregate in concrete structures promotes environmental sustainability; however, performance of these structures might be negatively impacted when it is used as a replacement to traditional aggregate. This paper aims to simulate recycled concrete beams strengthened with carbon fiber-reinforced polymer (CFRP), to advance the modeling and use of recycled concrete structures.
Design/methodology/approach
To investigate the performance of beams with recycled coarse aggregate concrete (RCAC), finite element models (FEMs) were developed to simulate 12 preloaded RCAC beams, strengthened with two CFRP strengthening schemes. Details of the modeling are provided including the material models, boundary conditions, applied loads, analysis solver, mesh analysis and computational efficiency.
Findings
Using FEM, a parametric study was carried out to assess the influence of CFRP thickness on the strengthening efficiency. The FEM provided results in good agreement with those from the experiments with differences and standard deviation not exceeding 11.1% and 3.1%, respectively. It was found that increasing the CFRP laminate thickness improved the load-carrying capacity of the strengthened beams.
Originality/value
The developed models simulate the preloading and loading up to failure with/without CFRP strengthening for the investigated beams. Moreover, the models were validated against the experimental results of 12 beams in terms of crack pattern as well as load, deflection and strain.
Keywords
Acknowledgements
Declarations:
Availability of data and materials: The data sets used and/or analyzed during the current study are available from the corresponding author upon the journal editor’s request.
Competing interests: The authors declare that they have no competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Authors’ contribution:
Yasser M. Mater – literature review, methodology, analysis and software, validation, writing and editing.
Ahmed A. Elansary – contributed to conceptualization, methodology, reviewing, writing and editing.
Hany A. Abdalla – contributed to conceptualization, methodology, reviewing, supervision and editing.
All three authors read and approved the final manuscript.
Since submission of this article, the following author has updated their affiliation: Yasser M. Mater is at the International Structural Design Unit, Engineering Consultants Group, Cairo, Egypt.
Citation
Mater, Y.M., Elansary, A.A. and Abdalla, H.A. (2024), "Experimental and numerical investigation of preloaded recycled concrete beams strengthened with CFRP", World Journal of Engineering, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/WJE-05-2023-0134
Publisher
:Emerald Publishing Limited
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