Evaluations of Rehabilitation Strategies Using Grey Relational Analysis for Specific Pavement Study-5 Sites in the LTPP Program

Within the context of the long-term pavement performance (LTPP) program, the purpose of the specific pavement studies-5 (SPS-5) experiment is to analyze the rehabilitation of asphalt concrete (AC) pavements. Most of the existing literature related to SPS-5 experiments addresses the effects of overlay thickness, overlay mix type, and pre-overlay preparation on the performance of AC pavements. A complete evaluation of the eight test sections (i.e., eight rehabilitation strategies) at one SPS-5 site is lacking in existing reports. In this study, grey relational analysis (GRA) was employed successfully to conduct studies on four SPS-5 sites in California, Colorado, New Jersey, and Texas, which are located in four climate regions. The long-term data of International Roughness Index (IRI), rutting, and three distresses (including longitudinal cracks, alligator cracks, and transverse cracks) were used to determine the effectiveness of eight rehabilitation strategies. The resulting ranking in effectiveness of rehabilitation strategies used in this study aligns well with the existing literature. With GRA the effectiveness of rehabilitation strategies can be quantified while depending less on engineering judgment. Evaluations based on the GRA provide a viable alternative for engineers when determining the best rehabilitation strategies for comprehensive LTPP or other studies.


  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 17-24
  • Monograph Title: Material, Design, Construction, Maintenance, and Testing of Pavement: Selected Papers From the 2009 GeoHunan International Conference

Subject/Index Terms

Filing Info

  • Accession Number: 01142789
  • Record Type: Publication
  • ISBN: 9780784410455
  • Files: TRIS
  • Created Date: Sep 29 2009 9:17PM