Rheological and fatigue-healing durability of asphalt containing synthesized microcapsules with refined waste oil core

Keeping asphalt pavement sustainable through improving intrinsic healing has been attracted more attention. In this study, microcapsules encapsulated refined waste engine oil were synthesized and added to asphalt to improve rheological properties and self-healing durability of asphalt binder. Microcapsules were fabricated by in-situ polymerization. The chemical structure, thermal stability and morphology were characterized by Fourier Transform Infrared Spectroscopy, Thermoravimetric Analysis, and Scanning Electron Microscopy. Basic properties, temperature sensitivity, rheological performance of asphalt were investigated. Multiple rest test was conducted to trace the mechanical and energy change of microcapsules induced asphalt. Results showed that microcapsules had adequate thermal resistance, and microcapsules were spherical, compact with agglomerated layers. Viscosity and rheological behavior were sightly improved when microcapsules content was within 4 wt%. Fatigue life was extended after adding microcapsules. Recovery of complex modulus was accelerated and average dissipated energy changed slowly as microcapsules were incorporated. Recovered life change in multiple rest test were described by exponential model and fatigue-healing durability were enhanced by adding microcapsules.

• Record URL:
  • https://doi.org/10.1016/j.conbuildmat.2020.121964
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0950061820339684
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
• Supplemental Notes:
  • © 2020 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Wang, Yongdan
  • Hao, Peiwen
• Publication Date: 2021-3-8

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: 121964
• Serial:
  • Construction and Building Materials
  • Volume: 274
  • 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; Asphalt additives; Durability; Fatigue strength; Oils; Rheological properties; Wastes
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 01762993
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 29 2021 4:29PM