Performance of I-57 recycled concrete pavements.

Details

• Creators:
  Roesler, Jeffrey R. ; Huntley, J. Gregory
• Corporate Creators:
  University of Illinois at Urbana-Champaign. Department of Civil and Environmental Engineering
• Corporate Contributors:
  Illinois. Department of Transportation. Bureau of Materials and Physical Research ; Illinois Center for Transportation
• Subject/TRT Terms:
  • Pavement design
  • Pavement joints
  • Concrete pavements
  • Continuously reinforced concrete pavements
  • Reinforced concrete Pavements
  • Pavements, Asphalt concrete
• Publication/ Report Number:
  FHWA-ICT-09-032;ICT-09-032, UILU-ENG-2009-2002
• Resource Type:
  Tech Report
• Geographical Coverage:
  Illinois
• Edition:
  Final report, Jan. 2008-Dec. 2008
• Corporate Publisher:
  Illinois Center for Transportation
• Abstract:
  In 1986-1987 the Illinois Department of Transportation (IDOT) constructed a demonstration project on I-57 near Effingham, Illinois to evaluate the viability ; of recycling an existing jointed reinforced concrete pavement for use as its primary aggregates in the surface mixture of a 10-in continuously reinforced ; concrete pavement (CRCP). This CRCP test section on northbound and southbound I-57 contained a 7-in cement-stabilized subbase and a 13.5-ft ; extended lane width. Longitudinal reinforcement bars were placed using the tube feeding method. Functional and structural data, including falling weight ; deflectometer testing (FWD), distress surveys, friction testing, surface profile testing, and conditions rating surveys were collected periodically throughout ; the life of the pavement. Structural test data demonstrates a pavement section that has exhibited excellent load carrying capacity (less than 0.006-in ; deflection under 9-kip load), and load transfer efficiency across the transverse cracks. Furthermore, the cement-treated subbase and subgrade have ; performed well over the CRCP’s service life. There also was no structural response or cracking difference between the sections with the stabilized base ; extended under the shoulder versus the base that is only a standard lane width. ; Few structural distresses are observed except for the prominent amount of longitudinal cracking that appears over the reinforcement bars in all lanes. This ; abnormal cracking pattern has been noted for many years and has been attributed to settlement cracking associated with the original tube feeding ; process, the bar size selected, the bulk density of the concrete with recycled concrete aggregate (RCA), and the higher drying shrinkage of RCA concrete. ; The section has developed a significant amount of localized distresses and patches over the past 5 years as a result of the further deterioration of this ; longitudinal cracking distress. A petrographic examination has concluded that there is no deleterious alkali-silica reaction occurring in the RCA test section, ; and that the air void system is normal. The mean transverse crack spacing is approximately 1.5 ft, which is significantly shorter than normal CRCP and ; can be attributed to the greater drying shrinkage potential, slightly lower tensile strength, and reduced fracture properties of RCA. Functionally, the ; pavement shows good skid resistance and fair-to-good ride quality. Overall, the performance of this CRCP pavement with RCA has exceeded roughly 50 ; percent of the 10-in CRCP within Illinois in terms of age and 25 percent in terms of traffic. ; Based on the 20 years of performance on the I-57 CRCP section, the future use of RCA on concrete pavement in Illinois can be approached with ; confidence and optimism. IDOT’s original material assessment has avoided any material-related distress such as freeze–thaw damage (D-cracking), ASR, ; and corrosion of the steel from excess chloride content. Future application of RCA in concrete pavements should consider its higher drying shrinkage ; potential and lower tensile strength and fracture energy. Future implementation of moist curing on concrete pavements with RCA or use of two-lift ; construction technique would minimize risk of the extremely close crack spacing due to excessive drying shrinkage noted on the I-57 CRCP test section.
  More +
• Format:
  PDF
• Funding:
  R 27-41
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16709/dot_16709_DS1.pdf
• File Type:
  [PDF - 3.95 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:0dd388db3fe5f1324ec32069b43375c7cd49fa9799ecb41e2539a0dce24b7381f151bff03b8ffc6c5f7e5f2e3d4690fa6ac542db8a301e018e3c69c833e3541c