Accelerated testing for studying pavement design and performance (FY 2004) : thin bonded rigid overlay on PCCP and HMA (CISL experiment no. 13).

Details

• Alternative Title:
  Thin bonded rigid overlay on PCCP and HMA (CISL experiment no. 13)
• Creators:
  Romanoschi, Stefan ; Dumitru, Cristian ; Lewis, Paul ; Hossain, Mustaque
• Corporate Creators:
  Kansas State University. Department of Civil Engineering
• Corporate Contributors:
  Kansas. Dept. of Transportation. Bureau of Materials & Research
• Subject/TRT Terms:
  • Paving
  • Pavement design
  • Pavement performance
  • Asphalt pavements Pavements--Kansas--Design and construction
  • Pavements, Asphalt--Kansas--Design and construction
  • Pavements--Kansas--Performance--Testing
  • Pavements, Asphalt--Kansas--Performance--Testing
• Publication/ Report Number:
  FHWA-KS-08-8
• Resource Type:
  Tech Report
• Geographical Coverage:
  Kansas
• Edition:
  Final report; Aug. 2003-July 2008.
• Corporate Publisher:
  Kansas. Dept. of Transportation
• Abstract:
  The thirteenth full-scale Accelerated Pavement Test (APT) experiment at the Civil Infrastructure Laboratory (CISL) ; of Kansas State University aimed to determine the response and the failure mode of thin concrete overlays. Four ; pavement structures were built and tested in this experiment: two Thin Concrete Overlays (TCO) pavements, with ; 4-inch and 6-inch thick overlays constructed on a 5-inch thick PCCP and two Thin Whitetopping (TWT) pavements, ; with 4-inch and 6-inch thick PCC overlays constructed on a 5-inch hot-mix asphalt layer. The pavements were ; instrumented to measure the strains at selected locations in each PCC overlay. Each of the four pavements was ; loaded with approximately two million passes of the CISL APT machine, under in-door ambient temperature ; condition. No moisture was added to the pavements. Response measurements and performance evaluations were ; performed at about every 100,000 passes. ; The TCO overlays failed due to the loss of support underneath the concrete slab which caused transverse cracks ; to develop in both 4- and 6-inch PCC overlays. No loss of bond between the PCC overlay and the supporting ; slab was observed. The 4-inch TWT exhibited a transverse crack at the middle of the slab, while the 6-inch TWT ; exhibited no cracks at the end of testing. ; The theoretical strains in the concrete overlays at the locations where instrumentation was installed were ; computed with the ANSYS Finite Element Method (FEM) software. It was found that the magnitude and shape ; of computed strains matched well with those of the strains measured before any APT loads were applied. It was, ; therefore, concluded that the three-dimensional finite element model built and the assumption made (linear elastic ; materials, fully bonded overlays) can accurately estimate the response of TWT and TCO pavements under wheel ; loading. In addition, the FEM can be used to estimate the evolution of lineal extent of the loss of support under the ; joints by comparing the measured strains with the corresponding computed strains.
  More +
• Format:
  PDF
• Funding:
  C1436
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17090/dot_17090_DS1.pdf
• File Type:
  [PDF - 5.79 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:92dae94323d971ca29d851f091dacc20ebd87065cb427e4071ff577a32ef5d1b44edaa9ac8b833eebe7c4dca81bbcbbf9205732d8d99046309c6b45564194194