INSULATION OF BRIDGE DECKS FOR ICE PREVENTION AND REDUCTION OF FREEZE-THAW CYCLES
A DISCUSSION IS CONDUCTED ON THE EFFECTIVENESS OF INSULATING A BRIDGE DECK FOR ICE PREVENTION AND REDUCTION OF FREEZE-THAW CYCLES. THE SITE SELECTED FOR THIS STUDY WAS THE TWIN STRUCTURES WHICH CARRY U.S. HIGHWAY 287 OVER THE FORT WORTH AND DENVER RAILROAD IN WICHITA FALLS, TEXAS. THE WEST STRUCTURE WAS INSULATED WITH SPRAYED URETHANE FOAM 3/4-INCH THICK FOR THE SOUTH HALF AND 1 1/4-INCH THICK FOR THE NORTH HALF. THE ADJACENT STRUCTURE WAS NOT INSULATED AND SERVES AS THE CONTROL STRUCTURE. TEMPERATURE DATA WERE COLLECTED AND ANALYZED FOR VARIOUS LOCATIONS WITHIN THE BRIDGE SLABS. RESULTS OF THIS ANALYSIS SHOW THAT THERE WAS NO REDUCTION IN THE NUMBER OF FREEZE-THAW CYCLES BECAUSE OF THE INSULATION. HOWEVER, THE AVERAGE FREEZE-THAW CYCLE LENGTH FOR THE TOP SURFACE OF THE INSULATED SLAB BETWEEN I-BEAMS WAS APPROXIMATELY TWO HOURS SHORTER THAN THE CYCLE LENGTH FOR THE UNINSULATED SLAB. /AUTHOR/
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Supplemental Notes:
- No 62-1f, 69 PP, 21 FIG, 3 TAB, 1 APP
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Corporate Authors:
Texas State Department of Highways & Public Transp
Bridge Division, 11th and Brazos Streets
Austin, TX United States 78701Department of Transportation
1200 New Jersey Avenue, SE
Washington, DC United States 20590Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590Bureau of Public Roads /US
400 7th Street, SW
Washington, DC United States 20590 -
Authors:
- Butler, H D
- Publication Date: 1966-2
Subject/Index Terms
- TRT Terms: Bridge decks; Data analysis; Data collection; Electric insulating materials; Freeze thaw durability; Ice prevention; Insulating materials; Mathematical analysis; Productivity; Reduction (Chemistry); Temperature
- Uncontrolled Terms: Time savings
- Old TRIS Terms: Control structures; Freezing thawing effects; Reduction
- Subject Areas: Bridges and other structures; Highways;
Filing Info
- Accession Number: 00208376
- Record Type: Publication
- Files: TRIS, USDOT, STATEDOT
- Created Date: Jan 24 1994 12:00AM