Thermal Analysis of Hot Mix Asphalt Pothole Repair by Finite-Element Method

Traditional repair methods tend to suffer from inadequate net interface heating because the combined effect of placing hot fill mix in a cold, old pavement leads to inadequate net temperature levels. The outcome of this is low durability and limited life. In contrast, the outcome of placing hot mix in a controlled, preheated host pavement is substantial increased working life. To understand repair heating, this study ran heat transfer finite-element models for the cases of (1) hot mix asphalt (HMA) placed in an ambient temperature pothole, (2) the heated pothole recess, and (3) HMA placed in the preheated pothole recess. The air–pavement–heater system model comprises a host pavement with two pothole repairs or, in the case of the second thermal model, with one empty pothole excavation, and an infrared heating element plate. For calibration purposes, experimental work of simulated repairs undertaken in previous research was used. The air–pavement–heater system setup followed an optimum pothole preheating method also determined in previous research. Thermal models were validated with previous experimental work. It was concluded that the models generate reasonable transient temperature profiles within the dynamically heated pothole excavation, at the interface of the repairs, and inside the host pavement.

• Record URL:
  https://doi.org/10.1061/JPEODX.0000156
• Supplemental Notes:
  • © 2020 Juliana Byzyka et al.
• Authors:
  • Byzyka, Juliana
  • 0000-0002-5570-8909
  • Rahman, Mujib
  • Chamberlain, Denis Albert
• Publication Date: 2020-9

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: 04020029
• Serial:
  • Journal of Transportation Engineering, Part B: Pavements
  • Volume: 146
  • Issue Number: 3
  • Publisher: American Society of Civil Engineers
  • EISSN: 2573-5438
  • Serial URL: http://ascelibrary.org/journal/jpeodx

Subject/Index Terms

• TRT Terms: Finite element method; Hot mix asphalt; Pavement maintenance; Potholes (Pavements); Preheating; Repairing; Service life; Thermal analysis
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 01740567
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: May 26 2020 10:42AM