URETHANE FOAM INSULATION FOR BRIDGE DECKS

A RESEARCH PROJECT USING URETHANE FOAM FOR THE PURPOSE OF INSULATING BRIDGE DECKS WAS INSTITUTED FOR: (1) SAFETY - ICING CONDITIONS CAN BE EXPECTED TO DEVELOP UNIFORMLY ON APPROACH PAVEMENTS AND ON THE STRUCTURE WEARING COURSE. ICE FORMS MORE RAPIDLY ON STRUCTURE WEARING COURSES THAN ON THE APPROACH PAVEMENTS THROUGH A RANGE OF 4 TO 5 DEG OF AMBIENT AIR TEMPERATURE IN THE CRITICAL RANGE. THIS IS PRIMARILY DUE TO THE MORE RAPID HEAT LOSS IN STRUCTURES AS COMPARED WITH APPROACH PAVEMENTS. (2) REDUCTION IN NUMBER OF DE-ICING CHEMICAL APPLICATIONS - IF ICING CONDITIONS DEVELOP UNIFORMLY ON APPROACH PAVEMENT AND STRUCTURE WEARING COURSES THE NUMBER OF APPLICATIONS OF DE-ICING CHEMICALS WILL BE SUBSTANTIALLY REDUCED ON STRUCTURE WEARING COURSES. THIS WILL THEN REDUCE THE HAZARD OF INTRUSION OF THE DE-ICING CHEMICALS INTO THE STRUCTURAL DECK; WITH ITS ATTENDANT DESTRUCTIVE EFFECT. (3) REDUCTION IN NUMBER OF FREEZE-THAW CYCLES - IT SHOULD NATURALLY FOLLOW THAT A SUBSTANTIAL REDUCTION IN THE NUMBER OF FREEZE THAW CYCLES IN THE STRUCTURAL CONCRETE DECK COULD BE ANTICIPATED, THEREBY ADDING TO THE LIFE AND PERFORMANCE OF THE STRUCTURAL DECK. /AUTHOR/

  • Supplemental Notes:
    • Vol 31 , No 3, PP 30-31
  • Authors:
    • Britton, H B
  • Publication Date: 1961-3

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Filing Info

  • Accession Number: 00209605
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 18 1972 12:00AM