STUDY OF PREFORMED OPEN CELL NEOPRENE JOINT SEALER FOR USE IN TRANSVERSE WEAKENED PLANE SAWED JOINTS

VARIOUS JOINTING PATTERNS AND SEALANTS THAT WERE PLACED ON I-70 BETWEEN DEER TRAIL AND AGATE IN 1967 WERE EVALUATED. THE TEST SECTIONS ARE ON BOTH A LIME-TREATED AND UNTREATED SWELLING SUBGRADE. UNSEALED JOINTS ARE COMPARED TO THOSE CONTAINING PREFORMED NEOPRENE, STANDARD RUBBERIZED ASPHALT, AND RUBBERIZED EPOXY (CEELRITE). RANDOM JOINT SPACINGS WERE ALSO TRIED IN THE EIGHT INCH THICK P.C. CONCRETE. JOINT MOVEMENTS WERE MEASURED AND DETAILED VISUAL OBSERVATIONS OF THE JOINTS WERE NOTED. DIFFICULTIES WERE EXPERIENCED DURING CONSTRUCTION WHICH MAY HAVE LED TO SOME CONTROVERSIAL RESULTS. IT WAS CONCLUDED THAT JOINTS SEALED WITH THE ASPHALT WERE CHEAPER TO CONSTRUCT AND PERFORMED BETTER THAN THE PREFORMED NEOPRENE IN THAT THEY HAD LESS INFILTRATION, SPALLING, AND ADHESION FAILURES. IT WAS ALSO CONCLUDED THAT UNSEALED JOINTS WERE BETTER THAN THOSE SEALED. THIS COULD BE A REFLECTION OF THE UNUSUALLY DRY CLIMATIC CONDITIONS. /BPR/

• Supplemental Notes:
  • Final ReporT, HPR-1(7), STATE NO 1475
• Corporate Authors:

  Colorado Department of Highways

  4201 East Arkansas Avenue
  Denver, CO  United States  80222

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Publication Date: 1969-11

Subject/Index Terms

• TRT Terms: Alternatives analysis; Asphalt; Elastomer modified asphalt; Joint sealers; Joints; Motion; Neoprene; Sealing compounds; Spacing; Test sections; Transverse joints
• Old TRIS Terms: Joint
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215914
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS, STATEDOT
• Created Date: Feb 9 1970 12:00AM