Spalling solution of precast-prestressed bridge deck panels.

Details

• Creators:
  Sneed, Lesley ; Belarbi, Abdeldjelil "DJ" ; You, Young-Min
• Corporate Creators:
  Missouri University of Science and Technology ; University of Houston
• Corporate Contributors:
  United States. Department of Transportation. Research and Innovative Technology Administration
• Subject/TRT Terms:
  • Precast concrete
  • Bridge decks
  • Panels
  • Prestressed concrete
  • Spalling
  • Precast concrete
  • Bridges--Missouri--Testing
• Publication/ Report Number:
  NUTC R234
• Resource Type:
  Tech Report
• Geographical Coverage:
  Missouri
• Edition:
  Final.
• Corporate Publisher:
  Missouri. Department of Transportation
• Abstract:
  This research has examined spalling of several partial-depth precast prestressed concrete (PPC) bridge decks. It was recently obser ; that some bridges with this panel system in the MoDOT inventory have experienced rusting of embedded steel reinforcement a ; concrete spalling issues in the deck panels. The objectives of this research were to investigate the causes of spalling in precastprestressed ; panels and propose cost-effective alternative solutions including improved design options for new construction, as well ; suggest mitigation methods for existing deteriorated bridge decks. A survey of transportation agencies and a series of bridge deck ; investigations were conducted to determine the nature and causes of spalling. Panel deck system modifications were proposed ; evaluated for potential use in new construction. These modifications were investigated in terms of structural performance and ; serviceability with respect to the current design. Panel deck system modifications evaluated included an increase in tendon side cove ; the addition of fibers or corrosion inhibitor to the panel concrete mixture, an increase in reinforcement in the cast-in-place concrete ; topping, and the substitution of edge tendons with epoxy-coated steel or carbon fiber reinforced polymer tendons. Efficiency of th ; proposed solutions was examined and validated through fundamental laboratory studies and numerical simulations using finite element modeling. Finally, recommendations are provided for new and existing construction to mitigate the spalling problem.
  More +
• Format:
  PDF
• Funding:
  DTRT06-G-0014
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18353/dot_18353_DS1.pdf
• File Type:
  [PDF - 35.73 MB]
• Collection(s):
  University Transportation Centers ; US Transportation Collection
• Main Document Checksum:
  urn:sha256:aa8f62ddd179b48edfa69ab86261ed2ee65bdc585d7341f60db47af5fd01105f