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Prediction of high-performance concrete strength using machine learning with hierarchical regression

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Abstract

This present study focuses on forecasting the compressive strength (CS) of high-performance concrete (HPC), which is mixed with fly ash and slag, using machine learning techniques with hierarchical quadratic regression (HQ) and multiple linear regression (ML). The study is based on 528 experimental results collected from literature, with variables including cement, blast furnace slag, fly ash, water, super plasticizer, fine aggregate, and coarse aggregate. The primary objective of this study is to develop a model for predicting the CS of HPC. The proposed hierarchical equation outperforms the multiple linear regression model in terms of prediction accuracy. It achieves lower values for mean absolute error (MAE), mean squared error (MSE), root mean square error (RMSE), and mean absolute relative error (MARE), while attaining a higher coefficient of determination (with an R2 of 97.12%, adjusted R2 of 96.81%, and predicted R2 of 96.43%) compared to the ML model (which has an R2 of 91.56%, adjusted R2 of 91.4%, and predicted R2 of 91.17%). A sensitivity analysis was conducted to evaluate the impact of the independent variables on the CS. The results of sensitivity analysis prove that the content of cement significantly impacts the CS of HPC, with a sensitivity analysis parameter of approximately 30%. This is followed by BFS, fly ash, coarse aggregate, fine aggregate, water, and superplasticizer.

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The data that support the findings of this study are available from the corresponding author, upon reasonable request.

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Iman Kattoof Harith and Wissam Nadir wrote the main manuscript text and . All authors reviewed the manuscript. Mustafa S. Salah & Mohammed L. Hussien contribute in review editing and figures editing.

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Correspondence to Iman Kattoof Harith.

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Harith, I.K., Nadir, W., Salah, M.S. et al. Prediction of high-performance concrete strength using machine learning with hierarchical regression. Multiscale and Multidiscip. Model. Exp. and Des. (2024). https://doi.org/10.1007/s41939-024-00467-7

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  • DOI: https://doi.org/10.1007/s41939-024-00467-7

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