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:
  • Overlays (Pavements)
  • Bridge decks
  • Rehabilitation (Maintenance)
  • Performance
  • 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.
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• Format:
  PDF
• Funding:
  105230
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32335/dot_32335_DS1.pdf
• File Type:
  [PDF - 655.61 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:a1cd6a0a961698cac5b69031f35807230caecd99aef65bc9ab7915e5bde66ab4