Coupled systems mechanics

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Comparative analysis of multiple mathematical models for prediction of consistency and compressive strength of ultra-high performance concrete

  • Alireza Habibi (Department of Civil Engineering, Shahed University) ;
  • Meysam Mollazadeh (Department of Civil Engineering, Kurdistan University) ;
  • Aryan Bazrafkan (Department of Civil Engineering, Bijar Branch, Islamic Azad University) ;
  • Naida Ademovic (Faculty of Civil Engineering Sarajevo, University of Sarajevo)
  • Received : 2023.03.19
  • Accepted : 2023.11.16
  • Published : 2023.12.25
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Abstract

Although some prediction models have successfully developed for ultra-high performance concrete (UHPC), they do not provide insights and explicit relations between all constituents and its consistency, and compressive strength. In the present study, based on the experimental results, several mathematical models have been evaluated to predict the consistency and the 28-day compressive strength of UHPC. The models used were Linear, Logarithmic, Inverse, Power, Compound, Quadratic, Cubic, Mixed, Sinusoidal and Cosine equations. The applicability and accuracy of these models were investigated using experimental data, which were collected from literature. The comparisons between the models and the experimental results confirm that the majority of models give acceptable prediction with a high accuracy and trivial error rates, except Linear, Mixed, Sinusoidal and Cosine equations. The assessment of the models using numerical methods revealed that the Quadratic and Inverse equations based models provide the highest predictability of the compressive strength at 28 days and consistency, respectively. Hence, they can be used as a reliable tool in mixture design of the UHPC.

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References

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