Decks.

Details

• Creators:
  Sprinkel, Michael M. ; Apeagyei, Alex K
• Corporate Creators:
  Virginia Center for Transportation Innovation and Research
• Corporate Contributors:
  Virginia. Dept. of Transportation ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Bridge decks
  • Bituminous overlays
  • Bridge deck overlay, Rosphalt
• Publication/ Report Number:
  FHWA/VCTIR 13-R5
• Resource Type:
  Tech Report
• Geographical Coverage:
  Virginia
• Corporate Publisher:
  Virginia. Dept. of Transportation
• Abstract:
  "Protection systems are placed on bridge decks to retard the intrusion of chlorides and moisture that can eventually cause ; corrosion deterioration. The Virginia Department of Transportation typically uses hydraulic cement concrete (HCC) overlays of ; latex-modified concrete (LMC); LMC with very early hardening cement (LMC-VE); and silica fume concrete (SFC) and epoxy ; overlays for deck protection. Occasionally, a conventional asphalt overlay and waterproof membrane system is used. ; Rosphalt is an asphalt that is considered to be impermeable and has been used on decks without placement of a membrane. ; The purpose of this research was to evaluate the construction, initial condition, and cost of the Rosphalt overlays placed on two ; bridges in Virginia: (1) the northbound lanes of I-85 over Route 629 and the eastbound and westbound lanes of Span 22 of the ; Norris Bridge on State Route 3 over the Rappahannock River. As a comparison to Rosphalt, a conventional asphalt overlay and ; waterproof membrane system was placed on the adjacent bridge on the southbound lanes of I-85 over Route 629. Emphasis was ; placed on comparing the wearing and protection systems with respect to speed and ease of construction (including lane closure ; time), initial condition as indicated by physical properties, protection and skid resistance, and cost. An objective was also to ; compare these asphalt protection systems to HCC overlays of LMC-VE, LMC, and SFC and epoxy overlays. ; Costs varied greatly depending on the estimates used and the bid prices. Although estimates for the Norris Bridge indicated ; Rosphalt as the lowest cost option, bid prices showed it was likely the most expensive option. Three overlay options, Rosphalt, ; SM-9.5 mixture and membrane, and LMC-VE, are rapid and can provide major reductions in traffic control and user costs. Based ; on laboratory tests, Rosphalt is more fatigue and rut resistant than the SM-9.5 mixture and should last longer, but based on the ; cost of the first two installations in Virginia, Rosphalt is too expensive to be considered as a competitive overlay system."
  More +
• Format:
  PDF
• Funding:
  93240
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27445/dot_27445_DS1.pdf
• File Type:
  [PDF - 2.40 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:29491828c0990d76ae8bce866deead13f0a1f3366bbe3a6e337f5d6bec4b8496