Evaluation of Silica Fume High Density Thin Bonded Overlays

Details

• Creators:
  Brewer, Wilson B. ; Williams, Gary
• Corporate Creators:
  Oklahoma. Department of Transportation. Planning & Research Division
• Subject/TRT Terms:
  • Bridge decks
  • Bridge management systems
  • Compressive strength
  • Concrete
  • Evaluation
  • Mix design
  • Pavement overlays
  • Permeability
  • Silica fume
  • Skid resistance
  More +
• Publication/ Report Number:
  FHWA/OK 02(2)
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Corporate Publisher:
  Oklahoma. Department of Transportation
• Abstract:
  Microsilica fume, commonly called silica fume, is made up of particles which are 100 times smaller than those which make up cement. When silica fume is added to Portland Cement Concrete (PCC), its small size allows it to fill voids, producing a denser, less permeable, PCC. In September 1999, the Oklahoma Department of Transportation (ODOT) experimentally placed overlays of silica fume modified PCC on two bridge decks. The two bridges are located on 1-35 in Carter County. The overlays have been evaluated since placement. Surveys for the evaluation included collecting data from the following tests: Half-cell potentials, smoothness measurements, crack surveys, and general condition surveys. In the three years since the overlays were placed, corrosion activity measured by half-cell potentials has remained low and smoothness measurements have indicated a good ride. Cracking has increased over three years, but cracks have not exceeded "hairline" width. The bridge deck had remained in good condition.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/88834/dot_88834_DS1.pdf
• File Type:
  [PDF - 1.77 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:3497461f97d9ad93c4dff1fbb2cfe5d1c0f4e7c09258e250d6ff754dbc1de14db55f92a883856bafcf73ef597221fa23118dc8986b042fccdf280ff7160701f7