PERFORMANCE OF FLEXIBLE PAVEMENT REHABILITATION TREATMENTS IN THE LONG-TERM PAVEMENT PERFORMANCE SPS-5 EXPERIMENT

The results of a study conducted to assess the relative performance of different flexible pavement rehabilitation treatments, including the influence of pretreatment condition and other factors, are presented. The data used in the study were drawn from the Long-Term Pavement Performance Studies' Specific Pavement Study (SPS) SPS-5 and General Pavement Study (GPS) GPS-6B experiments. The rehabilitation treatments used in the SPS-5 experiment are 2- and 5-in. overlays with virgin or recycled asphalt concrete mixes with or without preoverlay milling. Overlay thickness and preoverlay roughness levels were the two factors that most influenced the performance of the asphalt overlays of asphalt pavements in the SPS-5 experiment with respect to roughness, rutting, and fatigue cracking. Over the long term, the 5-in. overlays outperformed the 2-in. overlays with respect to roughness, rutting, and fatigue cracking. Overlay mix type (virgin versus recycled) and preoverlay preparation (with or without milling) had slight and inconsistent effects. The average initial postoverlay international roughness index of an asphalt overlay of an asphalt pavement was found to be 0.98 m/km. The data show a slight but statistically significant tendency for asphalt pavements overlaid when they were rougher to have more initial roughness after overlay than asphalt pavements overlaid when they were smoother. The data show that, on average, about 6 mm of rutting develops in the first year or so after placement of an asphalt overlay of an asphalt pavement. This is presumably due to compaction of the mix by traffic and appears to be independent of the overlay thickness, mix type, preoverlay preparation, and preoverlay rutting level.

• Record URL:
  https://doi.org/10.3141/1823-11
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=PERFORMANCE+OF+FLEXIBLE+PAVEMENT+REHABILITATION+TREATMENTS+IN+THE+LONG-TERM+PAVEMENT+PERFORMANCE+SPS-5+EXPERIMENT&author=K.+Hall&author=C.+Correa&author=A.+Simpson&publication_year=2003
• Availability:
  • Find a library where document is available. Order URL: http://www.trb.org/Main/Public/Blurbs/152243.aspx
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1823, Pavement Rehabilitation and Accelerated Testing 2003.
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Hall, K T
  • Correa, C E
  • Simpson, A L
• Publication Date: 2003

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 93-101
• Serial:
  • Transportation Research Record
  • Issue Number: 1823
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Asphalt concrete; Bituminous overlays; Fatigue (Mechanics); Flexible pavements; Milling; Pavement cracking; Pavement performance; Recycled materials; Rehabilitation (Maintenance); Roughness; Rutting; Thickness
• Identifier Terms: International Roughness Index; Long-Term Pavement Performance Program
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00962134
• Record Type: Publication
• ISBN: 030908556X
• Files: TRIS, TRB, ATRI
• Created Date: Aug 20 2003 12:00AM