WATERPROOF MEMBRANES FOR PROTECTION OF CONCRETE BRIDGE DECKS

A PROJECT IS REPORTED, WHICH WAS UNDERTAKEN TO DISCOVER IMPROVED WATERPROOF MEMBRANE PROTECTIVE SYSTEMS. A HUNDRED AND FORTY SEVEN KNOWN MEMBRANE SYSTEMS WERE SUBJECTED PRELIMINARY EXAMINATION WHICH INCLUDED INSPECTION OF THE PERFORMANCE OF 25 SYSTEMS IN PLACE ON EXISTING BRIDGE DECKS. SEVENTY EIGHT SYSTEMS WERE SELECTED FOR DETAILED STUDY AND 9 WERE SELECTED FOR A FIELD APPLICATION TEST. LABORATORY TESTS WERE PERFORMED TO DETERMINE PERMEABILITY, CRACK-BRIDGING CAPABILITY, DURABILITY RESISTANCE TO IMPACT DAMAGE, AND STRUCTURAL SERVICEABILITY. FIRE SYSTEMS CONSISTING OF VULCANIZED, CURED, OR CROSS-LINKED ELASTOMERS, WERE SELECTED FOR FURTHER EVALUATION. ALL FIVE SYSTEMS PROVIDE GOOD DIMENSIONAL STABILITY ON EXPOSURE TO ASPHALTIC CONCRETE AT APPLICATION TEMPERATURE, TO WATER, TO SOLAR HEAT, AND TO FREEZE-THAW CONDITIONS. ALL THESE SYSTEMS REQUIRE A PROTECTIVE COAT OF ASPHALTIC CONCRETE TO SERVE ADEQUATELY, AND ALL BUT ONE REQUIRE APPLICATION OF AN INTERMEDIATE PROTECTIVE LAYER TO AVOID DAMAGE DURING CONSTRUCTION OPERATIONS FOLLOWING MEMBRANE INSTALLATION. TENTATIVE SPECIFICATIONS DEVELOPED FOR THESE SYSTEMS ARE PRESENTED. RECOMMENDATIONS ARE MADE FOR FIELD EVALUATION TESTS RELATING TO ELECTRICAL RESISTANCE AND TENSILE BOND. THE EQUIPMENT AND MATERIALS USED IN THE TESTS ARE DESCRIBED AND THE PROCEDURES ARE OUTLINED.

• Record URL:
  http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rrd_56.pdf
• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Publication Date: 1974-3

Media Info

• Media Type: Digital/other
• Pagination: 13 p.
• Serial:
  • NCHRP Research Results Digest
  • Issue Number: 56
  • Publisher: Transportation Research Board

Subject/Index Terms

• TRT Terms: Bridge decks; Concrete; Durability; Elastomers; Electrical resistivity; Field tests; Freeze thaw durability; Laboratory tests; Specifications; Stability (Mechanics); Tensile strength; Testing; Waterproofing materials
• Old TRIS Terms: Resistivity
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00205282
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jul 22 1974 12:00AM