ASPHALT COOLING RATES: A COMPUTER SIMULATION STUDY

A simple method is presented for predicting the rate at which a newly placed asphaltic concrete mat cools under a given set of environmental conditions. Application of this method facilitates decisions on a daily basis, on whether or not to proceed with paving operations under marginal weather conditions specific to a construction site. Thermophysical properties of asphaltic concrete and pavement base materials common in Ohio are considered, together with heat transfer variables including conduction, convection, radiation, wind velocity, solar flux and cloud cover. Mathematical development of existing numerical calculation methods permits solution of the heat transfer equations in the field with a hand-held programmable calculator. The use of a portable surrogate device is also considered, for direct observations of the pertinent heat transfer variables. A quasi-analytical mathematical treatment developed for the specific purpose is most effective with the surrogate device. /Author/

• Supplemental Notes:
  • Sponsored by Ohio DOT and prepared in cooperation with DOT, Federal Highway Administration.
• Corporate Authors:

  University of Toledo

  Department of Industrial Engineering
  Toledo, OH  United States  43606-3390
• Authors:
  • Wolfe, R K
  • Colony, D C
• Publication Date: 1976-10-14

Media Info

• Features: Figures; References; Tables;
• Pagination: 88 p.

Subject/Index Terms

• TRT Terms: Asphalt concrete; Cooling; Electromagnetic radiation; Heat transfer; Mathematical models; Pavements; Steel; Temperature; Thrust; Weather
• Uncontrolled Terms: Controllers
• Subject Areas: Construction; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00163649
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: OHIO-DOT-07-06 Final Rpt.
• Contract Numbers: 14295(0)
• Files: TRIS
• Created Date: Jan 13 1978 12:00AM