Evaluation of cold in-place recycling for rehabilitation of transverse cracking on US 412.

Details

• Creators:
  Cross, Stephen A. ; Jakatimath, Yatish
• Corporate Creators:
  Oklahoma State University. School of Civil & Environmental Engineering
• Corporate Contributors:
  Oklahoma. Dept. of Transportation. Planning & Research Division
• Subject/TRT Terms:
  • Asphalt pavements
  • Pavement maintenance
  • Pavement cracking
  • In-place recycling
  • Recycling
  • Pavements, Asphalt--Maintenance and repair
  • Pavements, Asphalt--Cracking
  • Pavements, Asphalt--Recycling
• Publication/ Report Number:
  FHWA/OK 07 (04)
• Resource Type:
  Tech Report
• Geographical Coverage:
  Oklahoma
• Edition:
  Final report.
• Corporate Publisher:
  Oklahoma State University
• Abstract:
  Successful rehabilitation of transverse cracked hot mix asphalt (HMA) pavements has been a challenge ; for state DOTs. Conventional thin HMA overlays allow the rapid return of the existing transverse cracks ; and thicker HMA overlays are cost prohibitive. Cold In-Place Recycling (CIR) has been shown to be a ; cost-effective procedure for rehabilitation of transverse cracked HMA pavements. The use of fly ash ; Portland cement slurry to pretreat large transverse cracks has made CIR applicable to HMA pavements ; with severe (wide) transverse cracks. The new Mechanistic-Empirical Pavement Design Guide (MEPDG) ; uses dynamic modulus as a material characterization parameter for asphalt mixtures. In order to ; ensure CIR’s place in pavement maintenance and rehabilitation activities, guidelines on dynamic modulus ; (E*) parameters need to be developed. ; The objectives of this study were to evaluate the effectiveness of CIR with slurry crack injection to ; rehabilitate transverse cracked HMA pavements on two rehabilitation projects on US 412 in Beaver and ; Harper counties, to investigate the dynamic modulus properties of CIR mixtures, and to evaluate the ; appropriateness of the M-EPDG predictive equation for dynamic modulus for CIR mixtures. ; The CIR treatments have reduced the occurrence of transverse cracking but longitudinal wheel path ; cracking is occurring in the CIR test sections. The longitudinal cracking might be attributed to the thin, ; stiff HMA layer placed over the softer CIR layer. AASHTO TP 62 can be used to determine dynamic ; modulus of CIR mixtures with slight modification. The predictive dynamic modulus equations give good ; agreement with measured values at the three higher test temperatures if the aggregate properties are based ; on the RAP gradation and binder properties on the base binder in the asphalt emulsion.
  More +
• Format:
  PDF
• Funding:
  Item 2178
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23099/dot_23099_DS1.pdf
• File Type:
  [PDF - 3.42 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:5339de3c967e48f8671853ab3a390e4f1e6b5cb073fe10a6e931dffab24684c3271dde139f076027363b704816ddf902f6ff8ed52906d5d6475da6c782a80861