Development of an artificial neural network based-prediction model for bond strength of FRP bars in concrete
Email:
phnam@dut.udn.vn
Từ khóa:
fiber-reinforced polymer bar; pull-out test; bond strength; ANN model; machine learning technique
Tóm tắt
Fiber-reinforced polymer (FRP) bars have garnered increasing attention in recent years due to their superior corrosion resistance, offering a potential solution to the significant drawback of steel corrosion in concrete. For the widespread utilization of FRP bars in concrete structures, determining the bond strength between FRP bars and concrete is a crucial topic. This study seeks to develop a prediction model to estimate the bond strength of FRP bars in concrete, utilizing an extended dataset from 1010 pull-out tests. Initially, the study evaluates the applicability of several bond strength formulas from existing codes. Subsequently, two prediction models, namely a multivariate linear regression model and an artificial neural network (ANN) model, are introduced for estimating the bond strength of FRP bars in concrete. The results indicate that the correlation between the evaluation values of existing formulas and the experimental value is very low. This is because these formulas have not yet been updated to encompass the expanded usage scopes of FRP bars with various surface processing methods and types of concrete. While the multivariate linear regression model outperforms these formulas, its accuracy is still relatively low; in contrast, the ANN demonstrates superior performance, achieving an R^2 value for both the validation and test set of more than 0.92. The findings highlight that, when considering a broader range of applications, the ANN serves as a robust tool for accurately predicting the bond strength of FRP bars in concrete, in comparison to traditional formulas and linear regression models. This assessment approach provides engineers with a convenient, high-precision tool for designs utilizing various forms of FRP bars and diverse types of concrete in practical design scenariosTài liệu tham khảo
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[23]. B. Basaran, I. Kalkan, E. Bergil, E. Erdal, Estimation of the FRP-concrete bond strength with code formulations and machine learning algorithms, Composite Structures, 268 (2021) 113972. https://doi.org/10.1016/j.compstruct.2021.113972
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[27]. M. Ekenel, Fiber Reinforced Polymer Reinforcement for Concrete Members-ACI Committee 400 is taking the next step toward building code compliance, Concrete International, 43 (2021) 52-56.
[28]. A. Parghi, M. S. Alam, A review on the application of sprayed-FRP composites for strengthening of concrete and masonry structures in the construction sector, Composite Structures, 187 (2018) 518-534. https://doi.org/10.1016/j.compstruct.2017.11.085
[29]. Y. Liu, Z. H. Tao, Z. H. Hao, L. Lu, H. M. Yang, W. J. Cai, S. Guan, Experimental study on mechanical properties of novel FRP bars with hoop winding layer, Advances in Materials Science and Engineering, (2021) 1-18. https://doi.org/10.1155/2021/9554687
[30]. M. Baena, L. Torres, A. Turon, C. Barris, Experimental study of bond behaviour between concrete and FRP bars using a pull-out test, Composites Part B: Engineering, 40 (2009) 784-797. https://doi.org/10.1016/j.compositesb.2009.07.003
[31]. B. Basaran, I. Kalkan, Development length and bond strength equations for FRP bars embedded in concrete, Composite Structures, 251 (2020) 112662. https://doi.org/10.1016/j.compstruct.2020.112662.
[32]. A. Katz, Bond mechanism of FRP rebars to concrete, Materials and Structures, 32 (1999) 761-768. https://doi.org/10.1007/BF02905073
[33]. A. Rolland, M. Quiertant, A. Khadour, S. Chataigner, K. Benzarti, P. Argoul, Experimental investigations on the bond behavior between concrete and FRP reinforcing bars, Construction and building Materials, 173 (2018) 136-148. https://doi.org/10.1016/j.conbuildmat.2018.03.169
[34]. S. Islam, H. M. Afefy, K. Sennah, H. Azimi, Bond characteristics of straight-and headed-end, ribbed-surface, GFRP bars embedded in high-strength concrete, Construction and Building Materials, 83 (2015) 283-298. https://doi.org/10.1016/j.conbuildmat.2015.03.025
[35]. Z. Achillides, K. Pilakoutas, Bond behavior of fiber reinforced polymer bars under direct pullout conditions, Journal of Composites for construction, 8 (2004) 173-181. https://doi.org/10.1061/(ASCE)1090-0268(2004)8:2(173)
[36]. L. J. Malvar, J. Cox, K. B. Cochran, Bond between carbon fiber reinforced polymer bars and concrete. I: Experimental study, Journal of Composites for Construction, 7 (2003) 154-163. https://doi.org/10.1061/(ASCE)1090-0268(2003)7:2(154)
[37]. A. Belarbi, H. Wang, Bond durability of FRP bars embedded in fiber-reinforced concrete, Journal of Composites for Construction, 16 (2012) 371-380. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000270
[38]. Z. Dong, G. Wu, B. Xu, X. Wang, L. Taerwe, Bond durability of BFRP bars embedded in concrete under seawater conditions and the long-term bond strength prediction, Materials & Design, 92 (2016) 552-562. https://doi.org/10.1016/j.matdes.2015.12.066
[39]. W. Wei, F. Liu, Z. Xiong, Z. Lu, L. Li, Bond performance between fibre-reinforced polymer bars and concrete under pull-out tests, Construction and Building Materials, 227 (2019) 116803.
[40]. W. Tang, T. Lo, R. V. Balendran, Bond performance of polystyrene aggregate concrete (PAC) reinforced with glass-fibre-reinforced polymer (GFRP) bars, Building and Environment, 43 (2008) 98-107. https://doi.org/10.1016/j.buildenv.2006.11.030
[41]. A. Abbasi, P. J. Hogg, Temperature and environmental effects on glass fibre rebar: modulus, strength and interfacial bond strength with concrete, Composites Part B: Engineering, 36 (2005) 394-404. https://doi.org/10.1016/j.compositesb.2005.01.006
[42]. B. Tighiouart, B. Benmokrane, D. Gao, Investigation of bond in concrete member with fibre reinforced polymer (FRP) bars, Construction and Building Materials, 12 (1998) 453-462. https://doi.org/10.1016/S0950-0618(98)00027-0
[43]. M. Bazli, H. Ashrafi, A. V. Oskouei, Experiments and probabilistic models of bond strength between GFRP bar and different types of concrete under aggressive environments, Construction and Building Materials, 148 (2017) 429-443. https://doi.org/10.1016/j.conbuildmat.2017.05.046
[44]. Y. Ding, X. Ning, Y. Zhang, F. P. Torgal, J. Aguiar, Fibres for enhancing of the bond capacity between GFRP rebar and concrete, Construction and Building Materials, 51 (2014) 303-312. https://doi.org/10.1016/j.conbuildmat.2013.10.089
[45]. J. F. Davalos, Y. Chen, I. Ray, Effect of FRP bar degradation on interface bond with high strength concrete, Cement and Concrete Composites, 30 (2008) 722-730. https://doi.org/10.1016/j.cemconcomp.2008.05.006
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14/12/2023
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23/04/2024
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15/04/2024
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15/05/2024
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Kiểu trích dẫn
Huynh Phuong, N., Tran Le Anh, D., Phan Hoang, N., Nguyen Minh, H., & Phan Da, T. (1715706000). Development of an artificial neural network based-prediction model for bond strength of FRP bars in concrete. Tạp Chí Khoa Học Giao Thông Vận Tải, 75(4), 1502-1517. https://doi.org/10.47869/tcsj.75.4.3
