New Hampshire Binder and Mix Review

This review was initiated to compare relative rut testing and “simple performance tests” (now known as Asphalt Mix Performance Tests) for the New Hampshire ½ inch mix with 15% Recycled Asphalt Pavement (RAP). The tested mixes were made from various neat and modified asphalt liquids. The asphalts were tested with the full battery of Strategic Highway Research Program binder tests to assess stiffness comparisons and low temperature cracking properties. Binder testing results indicate that Polyphosphoric Acid (PPA) may slightly decrease the low temperature performance and the styrene-butadiene rubber (SBR) modified binder would perform better at low temperatures than the styrene-butadiene styrene (SBS) modified binder. With respect to rutting, the Multiple Stress Creep Recovery (MSCR) results indicate the PPA binder may increase rutting susceptibility and the SBR modified binder would perform better than the SBS modified binder. Mixture testing results indicate the PPA mixture will perform better with respect to rutting, but the Model Mobile Load Simulator (MMLS3) tests show the opposite. Air void content differences for the MMLS3 specimens could be affecting the results. The difference in fatigue performance will be dependent on the pavement structure. A stiffer mixture is generally better for thicker pavements, but may not be for thinner structures.

• Record URL:
  https://mm.nh.gov/files/uploads/dot/remote-docs/nhdot-research-14282b2-2012-report.pdf
• 
• Record URL:
  https://rosap.ntl.bts.gov/view/dot/27790
• Corporate Authors:

  University of New Hampshire, Durham

  Department of Civil Engineering
  Durham, NH  United States  03824

  New Hampshire Department of Transportation

  John O. Morton Building, 7 Hazen Drive
  Concord, NH  United States  03302-0483

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Daniel, Jo Sias
• Publication Date: 2012-8

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Figures; Tables;
• Pagination: 20p

Subject/Index Terms

• TRT Terms: Air voids; Asphalt mixtures; Bituminous binders; Fatigue (Mechanics); Performance tests; Reclaimed asphalt pavements; Rutting; Styrene butadiene rubber; Styrene butadiene styrene
• Identifier Terms: Multiple Stress Creep Recovery
• Uncontrolled Terms: Model mobile load simulators; Polyphosphoric acid
• Geographic Terms: New Hampshire
• Subject Areas: Highways; Materials; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01534779
• Record Type: Publication
• Report/Paper Numbers: FHWA-NH-RD-14282B-2
• Contract Numbers: 14282B-2, X-A000(400)
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Aug 18 2014 12:55PM