A Laboratory Study on Reduction of the Heat Island Effect of Asphalt Pavements

Heat islands are formed as a result of construction that replaces vegetation with absorptive surfaces. Air temperature rises as a result of formation of heat islands. One suggested method to reduce the emitted heat from asphalt pavement surfaces is to reduce the temperature of the surface by flowing a suitable fluid through the pavement. The heated fluid could then be used for different end applications. Laboratory experiments were carried out using compacted hot mix asphalt samples with quartzite and metagranodiorite aggregates. Pipes with different surface area were used to flow water through the samples, and the processes were modeled using finite element method. The results clearly show the feasibility of the proposed method, and indicate the beneficial effects of higher thermal conductivity of aggregates and larger surface area of pipes. Velocity and thermal profiles of water in the pipe inside asphalt pavement are analyzed, and the necessity of good contact between asphalt mix and fluid carrying pipe is illustrated.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02702932
• Authors:
  • Chen, Bao-Liang
  • Mallick, Rajib B
  • Bhowmick, Sankha
• Conference:
  • Asphalt Paving Technology 2009
  • Location: Minneapolis MN, United States
  • Date: 2009-3-15 to 2009-3-18
• Publication Date: 2009

Language

• English

Media Info

• Media Type: Print
• Features: CD-ROM; Figures; Photos; References; Tables;
• Pagination: pp 209-248
• Serial:
  • Journal of the Association of Asphalt Paving Technologists
  • Volume: 78
  • Publisher: Association of Asphalt Paving Technologists (AAPT)
  • ISSN: 0270-2932
  • Serial URL: https://www.asphalttechnology.org/site_page.cfm?pk_association_webpage_menu=9169&pk_association_webpage=19109

Subject/Index Terms

• TRT Terms: Absorptivity; Asphalt pavements; Finite element method; Fluids; Hot mix asphalt; Infiltration; Pipe; Thermal conductivity; Water
• Uncontrolled Terms: Heat island effect
• Subject Areas: Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01158651
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 11 2010 12:05PM