INFRARED HEATING TO PREVENT PREFERENTIAL ICING OF CONCRETE BOX GIRDER BRIDGES
This is a report on the use of infrared heat lamps to heat the underside of the bridge deck in order to prevent preferential icing. Seven watts per square foot was used to heat the underside of the deck within the concrete box. One box was insulated to help contain the heat, the other had no insulation. The system was found to be inadequate because of excessive lap time and insufficient power. Twenty watts per square foot (on the average at least) was determined to be necessary with this type of system to prevent preferential icing. The wind was analyzed along with the deck temperature data and found to control the effect of insulation on preferential icing. Insulation helps prevent preferential icing when the wind is parallel to the bridge but increases the chance when the wind is perpendicular to the bridge.
- Prepared in cooperation with DOT and FHWA.
Colorado Department of Highways4201 East Arkansas Avenue
Denver, CO United States 80222
- Griffin Jr, R G
- Publication Date: 1975-6
- Pagination: 86 p.
- TRT Terms: Box girders; Bridge decks; Concrete; Electric insulating materials; Girder bridges; Icing; Infrared heating; Insulating materials; Temperature; Wind
- Old TRIS Terms: Concrete box girders; Preferential icing
- Subject Areas: Highways; Maintenance and Preservation; Pavements;
- Accession Number: 00139789
- Record Type: Publication
- Source Agency: Federal Highway Administration
- Report/Paper Numbers: CDOH-P&R-R&SS-75-3 Final Rpt.
- Contract Numbers: 1484
- Files: TRIS, USDOT, STATEDOT
- Created Date: Dec 15 1976 12:00AM