Performance oriented guidance for Mississippi chip seals - volume I.

Details

• Creators:
  Isaac L. Howard ; Jordan, Walter S. ; Barham, Jason M. ; Alvarado, Alejandro ; Cox, Ben C.
• Corporate Creators:
  Mississippi State University. Dept. of Civil and Environmental Engineering
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Flexible pavements
  • Laboratory studies
  • Surface treating
  • Chip seals
  • Performance tests
  • Viscosity
  • Creep
  • Rheology
  • Bituminous pavements
• Publication/ Report Number:
  FHWA/MS-DOT-RD-13-211-Volume I
• Resource Type:
  Tech Report
• Geographical Coverage:
  Mississippi
• Corporate Publisher:
  Mississippi. Dept. of Transportation
• Abstract:
  A five year laboratory study was conducted to investigate near surface properties of flexible pavements in relation to ; how they are affected by bituminous surface treatments. Chip seals and scrub seals (a specialized type of chip seal) ; were the focus of the study. Seven emulsions, three aggregates, and four asphalt pavement types were tested. The ; overall objective was to provide MDOT with performance oriented guidance for chip seals. This overall objective ; was divided into aggregate retention and rejuvenation of the existing pavement’s near surface. Repeated creep of ; mixture bars, viscosity change of recovered binder, and Bending Beam Rheometer (BBR) mixture beam responses ; were used to assess rejuvenation effects of chip seals on a pavement’s near surface. Vialit adhesion, frosted marble, ; and sweep testing were used to assess aggregate retention behavior. Within the six test methods studied, some were ; used without modification, while others were modified during this research. Over 2,000 experiments were performed ; for this report. Key rejuvenation testing included: 24 repeated creep torsion bars, 168 viscosity change ; measurements, and 959 BBR mixture beams. Key aggregate retention testing included: 231 Vialit trays, 221 frosted ; marble trays, and 533 sweep pads. Key performance oriented recommendations included: requiring a minimum m-value increase of a BBR mixture beam due to emulsion application when rejuvenation is of high importance, ; monitoring moisture loss of a chip seal system for traffic opening determination, and specifying chip seal systems ; (i.e. aggregate and emulsion) as opposed to independently approving chip seal materials.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27404/dot_27404_DS1.pdf
• File Type:
  [PDF - 3.95 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:737009afe3b1b9a51f11c18bee20b1292b469bc0559ad31264f749e5c97540f9