COMPARATIVE TESTING OF JOINT SEALERS IN SIXTEEN LABORATORIES

BOND-DUCTILITY, FLOW AND PENETRATION TESTS ARE FREQUENTLY USED TO EVALUATE COMPOUNDS FOR JOINT AND CRACK SEALING IN PAVEMENTS. THE TESTS ARE USUALLY RUN ACCORDING TO FEDERAL SPECIFICATION SS-R406C METHOD 223.11. IT HAS BEEN OBSERVED THAT LABORATORIES USING THIS PROCEDURE DO NOT ALWAYS ARRIVE AT THE SAME RESULTS, AND THEREFORE SOME HAVE REJECTED SEALERS THAT PASS THE TEST IN OTHER LABORATORIES. TO FIND OUT HOW DIFFERENT THESE RESULTS COULD BE, 16 LABORATORIES WERE ASKED TO PARTICIPATE IN THE EVALUATION OF BOND-DUCTILITY, FLOW, AND PENETRATION TESTS FOR JOINT SEALING COMPOUNDS. THREE HOT-POURED TYPE RUBBER -ASPHALT SEALANTS WERE USED IN THIS TESTING PROGRAM. THE MATERIAL SAMPLES, TOGETHER WITH SPECIAL MORTAR TEST BLOCKS FOR THE BOND-DUCTILITY TEST, WERE SENT TO ALL PARTICIPANTS FROM ONE CENTRALIZED SOURCE, THE FEDERAL SPECIFICATION SS-R-406C PROCEDURE WAS USED, EMPHASIZING CERTAIN DETAILS IN ORDER TO HAVE THE TEST BETTER CONTROLLED. IN SPITE OF THE CAREFUL PLANNING AND CONTROL THE TEST RESULTS VARY CONSIDERABLY BETWEEN THE PARTICIPANTS. THIS IS ESPECIALLY NOTICEABLE IN THE BOND- DUCTILITY TEST. THE PRELIMINARY CONCLUSIONS ARE :(1) THE BOND-DUCTILITY TEST SHOULD BE RESTUDIED AND ADJUSTED TO ASSURE A BETTER REPRODUCIBILITY, (2) THE FLOW TEST IS NOT AN ACCURATE TEST, BUT GIVES REASONABLY COMPARABLE RESULTS, (3) THE PENETRATION TEST APPEARS TO GIVE RELATIVELY REPRODUCIBLE RESULTS. /ARTHOR/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/211/211-002.pdf
• Supplemental Notes:
  • No 211, pp 13-22, 4 FIG, 10 TAB, 10 REF, 1 APP 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
• Authors:
  • Tons, Egons
• Publication Date: 1959

Media Info

• Monograph Title: Sealers for joints and cracks in concrete pavements
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 211
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Bonds; Ductility; Ductility tests; Elastomer modified asphalt; Flow; Joint sealers; Laboratory tests; Pavement cracking; Soil penetration test
• Old TRIS Terms: Hot joints sealants; Test results
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00216722
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Apr 28 1994 12:00AM