BAY STATE CONSIDERS ALTERNATIVE BRIDGE DECK REPAIRS

SINCE THERE ARE NEVER ENOUGH FUNDS FOR ALL THE MAINTENANCE ACTIVITIES, PREVENTATIVE ACTION IS OFTEN DELAYED. THE STANDARD PRACTICE OF OVERLAYING ALL NEWLY CONSTRUCTED CONCRETE BRIDGE DECKS WITH A MEMBRANE WATER PROOFING AND A RIDING SURFACE OF BITUMINOUS CONCRETE IS DESCRIBED. THE THREE MEMBRANE SYSTEMS CURRENTLY UNDER EVALUATION ARE: (1) A LIQUID MEMBRANE WATEPROOFING CONSISTING OF A HOT RUBBERIZED ASPHALT COMPOUND APPLIED BY SQUEEZEE TO A PRIMED CONCRETE DECK SURFACE, PRODUCING A FILM THICKNESS OF APPROXIMATELY 150 MILES. (2) AN ELASTOMERIC WATERPROOFING BARRIER CONSISTING OF UNCURED SYNTHETIC RUBBER SHEETS LAID DIRECTLY ON A CONCRETE DECK PRIMED WITH RC-70. THE SHEETS ARE ABOUT 100 MILLS THICK AND (3) A BRIDGE DECK PAVING SYSTEM CONSISTING OF A PRIMER MADE UP OF A BLEND OF TAR-OIL, RUBBER AND SOLVENT FOLLOWED BY A HOT-APPLIED ADHESIVE OF BLENDED RUBBER AND TAR. THIS IS COVERED WITH SHEETS OF A PLASTIC MEMBRANE. THE QUESTION - ON AN EXPOSED CONCRETE DECK THAT BEGINS TO DISINTEGRATE AND WHICH HAS BEEN EXPOSED TO HEAVY CHLORIDE APPLICATION FOR SEVERAL YEARS, WILL OVERLAY THAT IS A GOOD BARRIER ALSO PREVENT FURTHER DISINTEGRATION OF THE UNDERLYING CONCRETE? - IS DISCUSSED. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1606878
• Supplemental Notes:
  • VOL 102 NO 10 PP 68-9, 104
• Authors:
  • Hagenbuch, J J
• Publication Date: 1971-10

Media Info

• Serial:
  • Public Works
  • Publisher: Hanley Wood
  • ISSN: 0033-3840
  • Serial URL: http://www.pwmag.com

Subject/Index Terms

• TRT Terms: Bridge decks; Concrete; Elastomer modified asphalt; Overlays (Pavements); Primers; Repairing; Thickness; Waterproofing materials
• Uncontrolled Terms: Membranes; Repairs
• Old TRIS Terms: Membranes (Biology)
• Subject Areas: Geotechnology; Highways; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 00218962
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 5 1972 12:00AM