1996 STEARNS COUNTY SUPERPAVE RESEARCH PROJECT

During 1996, Stearns County constructed eight asphalt pavement test sections on C.S.A.H. near St. Cloud, Minnesota, with six test sections composed of Superpave wear courses and two others composed of Minnesota Department of Transportation (Mn/DOT) traditional mixes. The six sections included two coarse Superpave mix designs with a 19.0 mm nominal maximum aggregate size. One Superpave mix design included polymer modified PG 58-34 asphalt binder and the other one used a traditional 120/150 pen graded asphalt, which tested as a PG 58-28. The PG 58-34 Superpave mix was used in the wear and binder courses in one location and just in the wear course in the adjacent section. The PG 58-28 Superpave mix only was used in the wear course. Then, portions of the three Superpave areas were sawed and sealed to create six sections. The surface texture of the two Mn/DOT sections was much tighter than the Superpave wear courses. The Mn/DOT wear courses required 1% more asphalt binder than the Superpave mixes. The construction of the project proved successful and future project evaluation will provide information about saw and seal, appropriate PG grades, and the performance of Superpave mixtures in the pavement structure at various depths.

• Record URL:
  • https://ntlrepository.blob.core.windows.net/lib/20000/20200/20218/PB98116924.pdf
• 
• Corporate Authors:

  Minnesota Department of Transportation

  Office of Materials, 1400 Gervais Avenue
  Maplewood, MN  United States  55109
• Authors:
  • Isackson, J A
• Publication Date: 1997-11

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 45 p.

Subject/Index Terms

• TRT Terms: Asphalt pavements; Binder course; Future; Mix design; Pavement surface course; Pavement wearing course; Pavements; Performance evaluations; Polymer asphalt; Research; Sawing; Sealing; Superpave; Test sections; Texture
• Uncontrolled Terms: Future research
• Geographic Terms: Stearns County (Minnesota)
• Old TRIS Terms: Sealing
• Subject Areas: Design; Highways; Pavements; Research; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00745727
• Record Type: Publication
• Report/Paper Numbers: MN/RC-97/23, Final Report
• Files: NTL, TRIS, ATRI, STATEDOT
• Created Date: Feb 18 1998 12:00AM