LONGEVITY OF HOT-POURED ELASTOMERIC JOINT SEALANTS

A POLYVINYL CHLORIDE (PVC) HOT-POURED ELASTOMERIC SEALANT HAS BEEN DEVELOPED THAT GIVES LONG-TERM PERFORMANCE. PVC WAS DEVELOPED IN 1963 AND HAS SINCE BEEN TESTED FOR NINE YEARS AGAINST THE VARIOUS TYPES OF HOT-POURED SEALANTS PRESENTLY BEING USED. ALTHOUGH THE OTHER SEALANTS FAILED IN SOME WAY AFTER A FEW YEARS, PVC SHOWED NO SIGNS OF BLISTERING, BUBBLING, COHESIVE FAILURE, ADHESIVE FAILURE, OR HARDENING AFTER 9 YEARS IN AREAS SUBJECT TO ALL TYPES OF WEATHER CONDITIONS. ON THE BASIS OF FIELD STUDIES AND ARTIFICIAL- WEATHERING RESEARCH IN THE LABORATORY, IT IS PREDICTED THAT PVC CAN SATISFACTORILY SEAL A JOINT WATERTIGHT, RESIST INTRUSION OF DIRT AND AGGREGATES BY MAINTAINING RESILIENCY FOR A PERIOD OF FROM 15 TO 20 YEARS. IN USING PVC FOR RESEALING HIGHWAY JOINTS, THE OLD MATERIAL MUST BE REMOVED, AND THEN THE JOINT MUST BE CUT, SHAPED, AND SANDBLASTED CLEAN. THE SEALANT IS THEN APPLIED AT THE LOW TEMPERATURE OF 250 F TO 280 F.

Media Info

  • Media Type: Print
  • Features: References;
  • Pagination: pp 25-27
  • Monograph Title: Concrete pavement construction and joint sealants
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00207466
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 19 1972 12:00AM