Follow-up field investigation of the effectiveness of antistripping additives in Virginia.

Details

• Creators:
  Maupin, G. W
• Corporate Creators:
  Virginia. Dept. of Transportation ; Virginia Transportation Research Council (VTRC)
• Subject/TRT Terms:
  • Pavements, Asphalt--Additives--Virginia
  • Pavements, Asphalt--Testing--Virginia
  • Aggregates (Building materials)--Evaluation
• Publication/ Report Number:
  VTRC 97-TAR6
• Resource Type:
  Tech Report
• Geographical Coverage:
  Virginia
• Edition:
  Technical assistance report.Jan. 1996Jan. 1997.
• Corporate Publisher:
  Virginia Transportation Research Council (VTRC)
• Abstract:
  A previous field study of 12 pavements revealed considerable stripping in the surface layers of mixtures placed in 1991-92. Most of the mixes containing chemical additives showed visual stripping, but the ones containing hydrated lime did not show significant stripping. This study was a broad field survey with cores taken from each of the nine VDOT districts. The purpose was to get a better estimate of stripping in Virginia than that of the earlier study. Significant visual stripping was detected in many sites, which verified the fmdings of the earlier study. However, in this study, hydrated lime performed no better than chemical additives. The SM-2A 50-blow mixes with slightly more asphalt performed no better than the SM-2B or SM-2C 75-blow mixes. Pavement voids at many sites were too high for good durability, and the compaction and mix design specifications should be examined. The degree of stripping damage in underlying layers could influence performance at many sites.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/19453/dot_19453_DS1.pdf
• File Type:
  [PDF - 1.23 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:d7e538a786f0c6d3423179de37edae0cbc307e95541d92ee6cad8a8073fd6046e66305cc649e473820316c533efddbe6116da172cc393acd5547197ee167cf2b