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Computers and Concrete Volume 32, Number 2, August 2023 , pages 149-163 DOI: https://doi.org/10.12989/cac.2023.32.2.149 |
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Predicting concrete's compressive strength through three hybrid swarm intelligent methods |
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Zhang Chengquan, Hamidreza Aghajanirefah, Kseniya I. Zykova, Hossein Moayedi and Binh Nguyen Le
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| Abstract | ||
| One of the main design parameters traditionally utilized in projects of geotechnical engineering is the uniaxial compressive strength. The present paper employed three artificial intelligence methods, i.e., the stochastic fractal search (SFS), the multi-verse optimization (MVO), and the vortex search algorithm (VSA), in order to determine the compressive strength of concrete (CSC). For the same reason, 1030 concrete specimens were subjected to compressive strength tests. According to the obtained laboratory results, the fly ash, cement, water, slag, coarse aggregates, fine aggregates, and SP were subjected to tests as the input parameters of the model in order to decide the optimum input configuration for the estimation of the compressive strength. The performance was evaluated by employing three criteria, i.e., the root mean square error (RMSE), mean absolute error (MAE), and the determination coefficient (R2). The evaluation of the error criteria and the determination coefficient obtained from the above three techniques indicates that the SFS-MLP technique outperformed the MVO-MLP and VSA-MLP methods. The developed artificial neural network models exhibit higher amounts of errors and lower correlation coefficients in comparison with other models. Nonetheless, the use of the stochastic fractal search algorithm has resulted in considerable enhancement in precision and accuracy of the evaluations conducted through the artificial neural network and has enhanced its performance. According to the results, the utilized SFS-MLP technique showed a better performance in the estimation of the compressive strength of concrete (R2=0.99932 and 0.99942, and RMSE=0.32611 and 0.24922). The novelty of our study is the use of a large dataset composed of 1030 entries and optimization of the learning scheme of the neural prediction model via a data distribution of a 20:80 testing-to-training ratio. | ||
| Key Words | ||
| artificial intelligence; compressive strength; concrete; hybrid methods | ||
| Address | ||
| Zhang Chengquan: Zhejiang Institute of Communications, Hangzhou, Zhejiang Province, China Hamidreza Aghajanirefah: Department of Civil Engineering, Faculty of Engineering, Qazvin Branch Islamic Azad University, Qazvin, Iran Kseniya I. Zykova: 1) Department of Mathematics and Natural Sciences, Gulf University for Science and Technology, Mishref Campus, Kuwait, 2) Department of Safety in cyberworld, Bauman Moscow State Technical University Moscow, Russia Hossein Moayedi and Binh Nguyen Le: 1) Institute of Research and Development, Duy Tan University, Da Nang, Vietnam, 2) School of Engineering & Technology, Duy Tan University, Da Nang, Vietnam | ||