An efficient model for predicting the dynamic performance of fine aggregate matrix

Fine aggregate matrix (FAM) is the combination of fine aggregates with a bituminous binder in an asphalt mixture. The viscoelastic properties of FAM have a direct effect on asphalt pavements’ performance. To predict the complex modulus of FAM the authors apply finite element (FE) simulation, combining a random aggregate distribution algorithm with steady-state dynamic (SSD) analysis. The dynamic moduli and phase angles of FAM were predicted and compared with results from laboratory tests. The modeling and test results showed that the complex interface layer between aggregates and asphalt mastic can have a big effect on the viscoelastic behavior of FAMs, while consideration of the interface layer in the FE model can further improve prediction accuracy. The simulation also showed that the SSD method is far more efficient in predicting the dynamic moduli and phase angles of FAMs than conventional transient dynamic methods, and has great potential for use in multi-scale asphalt mixture models.


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  • Accession Number: 01787811
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 12 2021 9:46AM