Validation of partial time-temperature superposition principle in thermorheologically complex asphalts

This study aims to validate the applicability of the partial time–temperature superposition principle to simulate the behavior of thermorheologically complex modified asphalts. Six different asphalts were used to analyze this complexity using dynamic mechanical tests within the linear viscoelastic regime. The results showed that the complexity of polymer-modified asphalts is attributable to the formation of an entanglement network generated during the modification via physical and chemical processes based on the polymer type. It was also found that this network increased the modulus and decreased the viscous component at high temperatures, thereby improving the performance of modified asphalts. Despite the observed complex behavior, smooth and continuous master curves were obtained for viscoelastic properties different from the phase angle in frequency and time domains. For the phase angle and loss modulus master curves, the overall trend of the disjointed isothermal curves was simulated using a rheological model.

• Record URL:
  • https://doi.org/10.1016/j.conbuildmat.2020.122224
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0950061820342276
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
• Supplemental Notes:
  • © 2021 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Hernandez-Fernandez, Noe
  • Ossa-Lopez, Alexandra
• Publication Date: 2021-3-22

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Serial:
  • Construction and Building Materials
  • Volume: 276
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0950-0618
  • Serial URL: http://www.sciencedirect.com/science/journal/09500618?sdc=1

Subject/Index Terms

• TRT Terms: Asphalt; Mechanical relaxation; Rheological properties; Temperature; Thermal properties; Viscoelasticity
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01765491
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 22 2021 10:21AM