Validation of the mix design process for cold in-place rehabilitation using foamed asphalt.

Details

• Creators:
  Lee ; Hosin “David” ; Kim, Yongjoo
• Corporate Creators:
  University of Iowa. Public Policy Center
• Corporate Contributors:
  Iowa. Highway Research Board ; Iowa. Dept. of Transportation
• Subject/TRT Terms:
  • Asphalt pavements
  • Recycling
  • In-place recycling
  • Cold in-place recycling
  • Foamed asphalt
  • Creep tests
  • Dynamic modulus of elasticity
  • Stripping (Pavements)
  • Pavements, Asphalt--Recycling
  • Foamed materials
• Publication/ Report Number:
  IHRB Report TR-474
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Corporate Publisher:
  University of Iowa. Public Policy Center
• Abstract:
  Asphalt pavement recycling has grown dramatically over the last few years as a viable ; technology to rehabilitate existing asphalt pavements. Iowa's current Cold In-place ; Recycling (CIR) practice utilizes a generic recipe specification to define the ; characteristics of the CIR mixture. As CIR continues to evolve, the desire to place ; CIR mixture with specific engineering properties requires the use of a mix design ; process. A new mix design procedure was developed for Cold In-place Recycling ; using foamed asphalt (CIR-foam) in consideration of its predicted field performance. ; The new laboratory mix design process was validated against various Reclaimed ; Asphalt Pavement (RAP) materials to determine its consistency over a wide range of ; RAP materials available throughout Iowa. The performance tests, which include ; dynamic modulus test, dynamic creep test and raveling test, were conducted to ; evaluate the consistency of a new CIR-foam mix design process to ensure reliable ; mixture performance over a wide range of traffic and climatic conditions. The “lab ; designed” CIR will allow the pavement designer to take the properties of the CIR into ; account when determining the overlay thickness.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24349/dot_24349_DS1.pdf
• File Type:
  [PDF - 7.75 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:8f2c81ffae42d479530a124fdc0a44067716e801be6b984420651a16df2906abd2f720fbbd48b7d6b6ba8fae3a435e7aeb8c9ab94b4794e5661a1ac9fb4fc8f2