Nondestructive Test Methods for Improved Quality of Recycled Pavement

MaineDOT is using recycling techniques such as foamed asphalt full depth reclamation and plant mix recycled asphalt pavement (PMRAP) as a primary highway improvement technique. Although we have learned much about the material and processes over the past few years there is still much more to learn in order to improve the quality and longevity of our highways. The structural capacity or "layer coefficient" for foamed asphalt and PMRAP is being determined based on limited laboratory work, FWD analysis and engineering judgment. The work to date concludes that layer coefficients and performance can vary greatly depending on presence of larger aggregates, in-situ moisture, material uniformity and layer thickness. Given the relatively high values being used to determine overall pavement thickness (1" recycled layer = ½" hot mix asphalt pavement) it is critical to improve the quality of these layers.

Language

• English

Project

• Status: Completed
• Sponsor Organizations:

  Maine Department of Transportation

  Research Division, Child Street, 16 State House Station
  Augusta, ME  United States  04333-0016
• Performing Organizations:

  Worcester Polytechnic Institute

  100 Institute Road
  Worcester, MA  United States  01609-2280
• Start Date: 20050701
• Expected Completion Date: 0
• Actual Completion Date: 20061230
• Source Data: RiP Project 12554

Subject/Index Terms

• TRT Terms: Asphalt pavements; Falling weight deflectometers; Hot mix asphalt; Pavement layers; Pavement performance; Pavements; Recycled materials; Research projects; Thickness
• Identifier Terms: Maine Department of Transportation
• Geographic Terms: Maine
• Subject Areas: Highways; Pavements; I30: Materials;

Filing Info

• Accession Number: 01458318
• Record Type: Research project
• Source Agency: Maine Department of Transportation
• Files: RIP, STATEDOT
• Created Date: Jan 3 2013 12:40PM