DEVELOPMENT OF MIX DESIGN METHOD FOR MOTO-PAVER MIXES. FINAL REPORT

Open graded moto-paver mixes (Pennsylvania FB-1 Bituminous Courses) are used extensively by the Pennsylvania Department of Transportation's (PennDOT's) maintenance forces in resurfacing low-volume roads. These mixes are manufactured in travel plants (such as, Midland Paver) using emulsified asphalts. This research was undertaken to develop a simple mix design method so that the optimum emulsion content can be established for use in the field. Eight aggregates (AASHTO No. 8) of different mineralogical compositions and absorptive characteristics and a CMS-2 (PennDOT's E-5) Emulsified Asphalt were used in this study. Aggregates were tested for water absorption, apparent and bulk specific gravity, particle index and flakiness index. Mixtures made with varying emulsion contents were subjected to three types of runoff test: Pyrex Plate test, Chevron Runoff test, and the Pennsylvania Runoff test developed in this study. Marshall specimens were also tested for bulk specific gravity, air void content, resilient modulus, stability and flow to establish the optimum emulsion contents. Pennsylvania Runoff test and the runoff criteria established in this study gave emulsion contents reasonably close to the optimum emulsion contents obtained from the resilient moduli and specific gravity values of compacted specimens. It has been recommended to use this newly developed simple method for designing open graded moto-paver mixes in Pennsylvania.

• Corporate Authors:

  Pennsylvania Department of Transportation

  Bureau of Construction and Materials, 1118 State Street, P.O. Box 2926
  Harrisburg, PA  United States  17105-2926

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Kandhal, P S
  • Basso Jr, H R
• Publication Date: 1987-8

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 83 p.

Subject/Index Terms

• TRT Terms: Absorption; Aggregates; Air voids; Bituminous mixtures; Emulsified asphalt; Grain size (Geology); Low volume roads; Marshall test; Mix design; Modulus of resilience; Open graded aggregates; Resurfacing; Specific gravity
• Old TRIS Terms: Aggregate characteristics; Air voids content; Flakiness index; Marshall stability marshall stability & flow test flow; Travel plant
• Subject Areas: Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00464666
• Record Type: Publication
• Report/Paper Numbers: FHWA-PA-87-006+84-03
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Dec 31 1988 12:00AM