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

Abstract

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.

Publication DOI: https://doi.org/10.1061/JPEODX.0000156
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Engineering Systems and Supply Chain Management
Additional Information: This work is made available under the terms of the Creative Commons Attribution 4.0 International license, https://creativecommons.org/licenses/by/4.0/
Uncontrolled Keywords: Civil and Structural Engineering,Transportation
Publication ISSN: 2573-5438
Last Modified: 30 Sep 2024 12:28
Date Deposited: 17 Jul 2020 07:08
Full Text Link:
Related URLs: https://ascelib ... /JPEODX.0000156 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2020-09-01
Published Online Date: 2020-04-23
Accepted Date: 2019-09-18
Authors: Byzyka, Juliana
Rahman, Mujib (ORCID Profile 0000-0002-5177-4159)
Chamberlain, Denis

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