Performance of bridge deck overlays in Virginia : phase 1 : state of overlays : final report

Details

• Creators:
  Balakumaran, Soundar S.G. ; Weyers, Richard E. ; Brown, Michael Carey
• Corporate Creators:
  Virginia Transportation Research Council
• Corporate Contributors:
  Virginia. Dept. of Transportation ; United States. Federal Highway Administration. Virginia Division
• Subject/TRT Terms:
  Bridge Decks Overlays (Pavements) Performance Rehabilitation (Maintenance) Service Life
• Publication/ Report Number:
  FHWA/VTRC 17-R17
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Virginia
• OCLC Number:
  990340475
• Corporate Publisher:
  Virginia Transportation Research Council
• Abstract:
  Maintaining the existing transportation infrastructure is a major concern of the Virginia Department of Transportation
  
  (VDOT). The increased user travel costs, safety concerns, and financial burdens involved in replacing deteriorating decks are
  
  reasons for finding appropriate rehabilitation actions that can safely extend the service life of structures.
  
  Virginia has been a leader in employing overlays as a rehabilitation method for bridge decks. VDOT’s Manual of the
  
  Structure and Bridge Division contains guidance for the decision-making process related to maintenance and repair of structures.
  
  Yet there is a need to update the guidelines based on contemporary experience and the knowledge gained through technological
  
  advances.
  
  This report presents and discusses the preliminary findings of Phase I of a multi-phase study to determine the
  
  performance of bridge deck overlays in Virginia. Phase I focused on obtaining information regarding the experiences of VDOT’s
  
  nine districts with regard to their use of different kinds of overlays and the factors that influence which overlays are used. In
  
  addition, VDOT’s bridge inventory was analyzed to gain an understanding of the types of overlay systems used in Virginia.
  
  The overlay types identified to be the most commonly used by the nine VDOT districts were latex-modified concrete,
  
  epoxy concrete, silica fume concrete, very-early-strength latex-modified concrete, and hot-mix asphalt concrete with a waterresistant
  
  membrane. From interviews, wide ranges in service life, even for the same overlay type, were found in every VDOT
  
  district. The performance of overlays, irrespective of the type, was highly dependent on the construction workmanship and the
  
  attention paid to the crucial details. Another commonly observed influential factor was the degree of deck damage (i.e.,
  
  deterioration) that existed when the overlay was installed; the higher the pre-overlay deck damage, the worse the performance of
  
  the overlay.
  
  The study recommends that a Phase II study be conducted that will involve an investigation of the overlays for bridges in
  
  VDOT’s bridge inventory, including a review of inspection reports and a field survey of a selected number of bridge decks. The
  
  study further recommends that factors identified in the Phase I study, such as age of overlays, traffic volume, and salt usage, be
  
  taken into account when the bridges are selected. The results will support appropriate modifications to the bridge maintenance
  
  guidelines as they pertain to deck overlays in VDOT’s Manual of the Structure and Bridge Division.
  
  
• Format:
  PDF
• Funding:
  105230
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:a1cd6a0a961698cac5b69031f35807230caecd99aef65bc9ab7915e5bde66ab4
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32335/dot_32335_DS1.pdf
• File Type:
  [PDF - 655.61 KB ]