Twenty Years of Cold In-Place Recycled Pavement Performance

Engineering District 1-0 of the Pennsylvania Department of Transportation (PennDOT) has been utilizing cold in-place recycling as a pavement rehabilitation treatment strategy since 1983. The paper discusses the design and construction methods used to accomplish cold in place recycling (CIR). It also includes the results of extensive field and performance data evaluations. Finally, a discussion of actual historical costs for cold in-place recycling is presented. The research team performed coring, reflective crack evaluations, and FWD testing of several pavement sections in 2002. Pavement performance data dating back to 1983 became available in 2004. The paper provides the results of in-place material characterization and performance evaluation for 28 pavement sections over the past twenty years. A number of valuable conclusions are provided. The evaluation of performance data has revealed that CIR sections have performed excellently for up to twenty years. Backcalculation of deflection data indicates that CIR materials can provide excellent material stiffness. The change in material properties which may be experienced with this process over time is also discussed. Field surveys of distress show that CIR has been effective in delaying reflective cracking. Results of these evaluations have shown that CIR sections have resulted in good long-term pavement performance relative to conventional pavement rehabilitation treatments. Additionally, actual costs for CIR work have resulted in significant savings over the study period for the owner.

Language

  • English

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Filing Info

  • Accession Number: 01083132
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 28 2007 11:46AM