Nearly 12,000 yd2 of interlayer membranes were installed on salt-contaminated decks in Kansas between 1967 and 1974. The decks were from 6 to 50 years old when the membranes were placed. All of the membranes are performing well after 12 to 16 years. Traffic over the membranes during that time ranged from 3 to 160 million vehicles. The majority of resistivity readings taken in 1982 were greater than 500,000 ohms/ft2. The asphalt wearing surfaces over the membranes were judged satisfactory to excellent. The 16-year-old membrane covered only part of a deck, but that part is in far superior condition than the remaining bare deck. In 1926 an asphalt-cotton fabric membraneous waterproofing system was placed over 1,437 yd2 of a new Kansas bridge deck. The membrane was covered with a cement-sand mortar layer that was topped with paving bricks. After 56 years of service and about 50 million vehicle passes the concrete below the membrane contained less than 0.75 lb of chloride ion per cubic yard of concrete. In Kansas the evaporation rate is higher than the precipitation rate. This may be one reason why membranes work well on salt-contaminated decks in Kansas.

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 66-68
  • Monograph Title: Bridge maintenance management, corrosion control, heating, and deicing chemicals
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00394971
  • Record Type: Publication
  • ISBN: 0309037182
  • Files: TRIS, TRB
  • Created Date: Jan 31 1986 12:00AM