THE CONSTRUCTION AND OPERATION OF AN EXPERIMENTAL ROAD- HEATING INSTALLATION A, 412 AT SLOUGH, BUCKS

R.R.L. LAID ELECTRICAL HEATING IN NEARSIDE LANE OF BOTH DUAL CARRIAGEWAYS ON A. 412, NORTH OF SLOUGH, BUCKS; TWO BRIDGES WITH STEEP RAMPS ALSO HEATED' 9 WATTS /SQ.FT. ON ROAD AND 12 WATTS/ SQ. FT. ON BRIDGE DECKS /TOTAL ELECTRICAL LOAD 430 KW/. ON OFF PEAK TARIFF, AVERAGE COST PER SQ. YD. P.A. WAS 21D. OVER 5 YEARS. PLACING THE RESISTIVE HEATING CABLES IN A THIN LAYER OF HAND-LAID SAND ASPHALT HELPED TO PROTECT THEM FROM DAMAGE DURING CONSTRUCTION WORKS. STONES WERE VERY LIABLE TO DAMAGE P.V.C. SHEATHING. DURING 5 YEARS SOME INSULATION FAILED AND SOME CABLES WERE RUPTURED. P.V.C. SHOULD BE AT LEAST 0.1 IN. THICK. OTHER FAILURES WERE CAUSED BY DETERIORATION OF THE SURFACING OVER CONCRETE JOINTS; THERE SHOULD BE 6 IN. BETWEEN CABLE AND JOINT. REPAIRS OVER 5 YEARS COST 16000 ENGLISH POUNDS, LARGELY BECAUSE THE INSTALLATION WAS AN EARLY EXPERIMENTAL ONE. /RRL/

• Supplemental Notes:
  • Vol Ln, No 739, JAN65, 14PP, 2 FIG, 8TAB, 8 PHOT
• Corporate Authors:

  Road Research Laboratory /UK

  ,    
• Authors:
  • Williamson, P J
• Publication Date: 1965-1

Subject/Index Terms

• TRT Terms: Analysis; Asphaltic sand; Bridge decks; Cables; Construction; Costs; Deterioration; Electric cables; Electric heating; Electrical equipment; Failure; Heaters; Heating (Structures); Highways; Insulating materials; Maintenance practices; Pavements; Polyvinyl acetate; Roads; Studies; Tests
• Uncontrolled Terms: Operation and maintenance; Pavement heating
• Geographic Terms: Slough (England)
• Old TRIS Terms: Electric heating elements; Insulator; Polyvinyl; Study analysis
• Subject Areas: Construction; Finance; Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 00218103
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Dec 12 1994 12:00AM