Numerical evaluation of induction heating assisted compaction technology for low temperature asphalt pavement construction

Changhong Zhou, Xueyan Liu, Panos Apostolidis

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

Low Temperature Asphalt (LTA) technologies are utilized in asphalt pavement industry to lower energy demands and greenhouse gas emission during mixing and construction processes. Although these technologies are currently available and hope to demonstrate similar performance with Hot Mix Asphalt (HMA) mixes, LTA shows more sensitive than HMA to temperature reduction during compaction and that will lead to inadequate compaction. Especially for Low Temperature Porous Asphalt (LTPA) mixes, the quick reduction of mix temperature is the main cause to poor pavements performance. The induction heating assisted compaction process appears to be an effective way to ameliorate compaction issues and to improve the compactability at lower temperatures. To design this process for LTA mixes, a numerical approach of combining the finite and the discrete element methods is presented in this paper. Porous asphalt concrete was the selected study material. The simulation process was divided into three steps: (i) temperature field prediction during induction heating, (ii) adjustment of asphalt mortar parameters and (iii) asphalt pavement compaction analysis. The effect of induction heating to asphalt compaction effectiveness, the tendency of mix density changing along with the increase of compactor passes and the influence of temperature on compaction at different locations in pavement were studied and discussed as well
Original languageEnglish
Title of host publicationThe 96th Annual Meeting of the Transportation Research Board
PublisherTransportation Research Board (TRB)
Number of pages16
Publication statusPublished - 2017
Event96th Annual Meeting of the Transportation Research Board: Transportation Innovation: Leading the Way in an Era of Rapid Change - Walter E. Washington Convention Center, Washington, United States
Duration: 8 Jan 201712 Jan 2017
Conference number: 96
http://www.trb.org/AnnualMeeting/AnnualMeeting.aspx

Conference

Conference96th Annual Meeting of the Transportation Research Board
Abbreviated titleTRB 96th anual meeting
CountryUnited States
CityWashington
Period8/01/1712/01/17
OtherThe meeting program will cover all transportation modes, with more than 5,000 presentations in over 800 sessions and workshops, addressing topics of interest to policy makers, administrators, practitioners, researchers, and representatives of government, industry, and academic institutions
Internet address

Keywords

  • Low temperature asphalt
  • Induction heating
  • Compaction
  • Porous asphalt
  • DEM
  • FEM

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