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May 22, 2026PolymersOpen Access

Experimental Evaluation and Prediction of the Dynamic Modulus of Crumb Rubber-Modified Stone Mastic Asphalt Mixtures

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Authors

MIMuhammad IrfanNational University of Sciences and TechnologySWSaif Ullah Khan WazirNational University of Sciences and TechnologyMKMuhammad Asif KhanNational University of Science and Technology

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Overview

Experimental trial assesses dynamic modulus in crumb rubber-modified asphalt, suggesting improved performance in heavy-load conditions.

Key Points

  • The research aims to evaluate the dynamic modulus of crumb rubber-modified stone mastic asphalt mixtures and predict their performance.
  • Dynamic modulus testing at four temperatures and six frequency sweeps.
  • Preparation of SMA 19 specimens with varying percentages of crumb rubber.
  • Development of performance prediction models using artificial neural networks and non-linear regression.
  • 10% crumb rubber addition led to a 64% increase in dynamic modulus compared to neat mixtures.
  • Master curves indicated that 10% modified SMA was stiffer and more rut-resistant than other compositions.
  • A temperature rise reduced dynamic modulus by 65%, while increasing frequency raised it by 72%.

Cite This Study

Irfan et al. (2026) studied this question.

synapsesocial.com/papers/6a0ff3ecd674f7c03778cdbehttps://doi.org/10.3390/polym18101249
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