INFRARED CAMERAS REVEAL WORLD OF PAVEMENT PROBLEMS

A special infrared camera that can photograph hot mix asphalt (HMA) as pavement is being laid enables state transportation departments and private contractors to know when pavement mats are in danger of turning into potholes. The device searches for temperature differentials, looking for patches of asphalt that are tool and will not compact correctly. This in turn can cause premature decay in mats, leading to cracks and potholes. If cooler areas are detected, contractors can take steps to ensure mat temperatures are uniform. Despite the high cost of the infrared camera, a number of state departments of transportation, such as California, Massachusetts, Minnesota, Oregon, and Texas believe that the investment may be worthwhile.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/08919526
• Corporate Authors:

  McGraw-Hill, Incorporated

  330 West 42nd Street
  New York, NY  United States  10036
• Authors:
  • Hitchings, L
• Publication Date: 2003-8-11

Language

• English

Media Info

• Features: Photos;
• Pagination: p. 18
• Serial:
  • ENR
  • Volume: 251
  • Issue Number: 6
  • Publisher: McGraw-Hill, Incorporated
  • ISSN: 0891-9526

Subject/Index Terms

• TRT Terms: Air voids; Cold weather construction; Hot mix asphalt; Infrared analysis; Pavement performance; Temperature measurement
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00963431
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: BTRIS, TRIS
• Created Date: Oct 2 2003 12:00AM