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 In-place Recycling Pavement Cracking Pavement Maintenance Pavements, Asphalt--Cracking Pavements, Asphalt--Maintenance And Repair Pavements, Asphalt--Recycling 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.
  
  
• Format:
  PDF
• Funding:
  Item 2178
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:3053f3a59c7769ef27fc3b39e5d4d96f37e185493da24feb38bc4ff9e01e3421
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/23099/dot_23099_DS1.pdf
• File Type:
  [PDF - 3.42 MB ]