Long-life slab replacement concrete.

Details

• Creators:
  Zayed, Abla ; Riding, Kyle ; Ferraro, Christopher C. ; Bien-Aime, Andre ; Shanahan, Natallia ; Buidens, Daniel ; Meagher, Thomas ; Tran, Victor ; Henika, Justin D. ; Paris, Jerry M. ; Tibbetts, Caitlin M. ; Watts, Benjamin E.
  More +
• Corporate Creators:
  University of South Florida. Department of Civil and Environmental Engineering
• Subject/TRT Terms:
  • Concrete pavements
  • Slabs
  • Pavement cracking
  • Field tests
  • Laboratory tests
  • Heat of hydration
  • Thermal stresses
  • Temperature
  • Mix design
  • Accelerating agents
• Publication/ Report Number:
  BDV25-977-01
• Resource Type:
  Tech Report
• Geographical Coverage:
  Florida
• Corporate Publisher:
  Florida Department of Transportation
• Abstract:
  This research was initiated following reports of high incidence of cracking on FDOT concrete pavement replacement ; slab projects. Field slabs were instrumented for data acquisition from high-early-strength concrete pavement ; replacement slabs placed on projects funded by the Florida Department of Transportation (FDOT). Data were collected ; for three slabs located in Jacksonville, Florida, and Gainesville, Florida. A battery of laboratory tests was ; simultaneously conducted on the FDOT-approved concrete mixture designs used in the instrumented field slabs in ; addition to mixtures with variable chloride-based accelerator dosage. Temperature and strain data, as well as physical ; and thermal data, were acquired from slabs from the construction projects. The physical and thermal data acquired ; from the field were used for modeling description and verification. Subsequent to the field testing and data acquisition, ; the slabs were inspected for the presence of cracking. Laboratory testing included as-received materials ; characterization, heat of hydration measurements using isothermal and semi-adiabatic calorimetry for temperature rise ; assessment, and strength maturity curves for strength assessment. Using ConcreteWorks and HIPERPAV III, the ; findings indicated that adherence to the approved mixture design is critical. High placement temperatures and concrete ; placement during the day increased concrete cracking potential. Field additions of accelerator in excess of the approved ; mixture design were also found to increase the cracking potential.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28813/dot_28813_DS1.pdf
• File Type:
  [PDF - 14.77 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:bd6563f5fa05819eb6b94f76baf665cbc0008fa112b07670e435121aa2474d4ddc2ddc15dedde5a188d62de82f5e3f54b0a6760b2cf66ec84763389700ef4aa6