Latex and microsilica modified concrete bridge deck overlays in Oregon : interim report.

Details

• Creators:
  Lundy, James R. ; Sujjavanich, Suvimol
• Corporate Creators:
  Oregon State University. Department of Civil Engineering
• Corporate Contributors:
  Oregon. Department of Transportation. Engineering Services Section ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Bridge decks
  • Silica fume
  • Latex
  • Concrete overlays
  • Cracking
  • Delamination
  • Milling
  • Statistical analysis
  • Latex modified concrete
  • Latex
  More +
• Publication/ Report Number:
  FHWA-OR-RD-95-06
• Resource Type:
  Tech Report
• Geographical Coverage:
  Oregon
• Corporate Publisher:
  Oregon State University. Dept. of Civil, Construction, and Environmental Engineering
• Abstract:
  This interim report presented information collected from 24 bridge deck overlays constructed in Oregon between 1989 and 1993. Decks were placed on a variety of existing structures using hydroblasting, milling and diamond grinding surface preparation. All decks were latex or microsilica modified concrete. ; Some decks experienced premature cracking and/or delamination. The objective of this study is to determine the possible cause(s) of these distresses and recommended procedures to correct the problem ; Statistical analyses of available environmental and construction information failed to clearly establish the causes of early cracking or delamination. Petrographic studies did show more microcracking was present in the substrate when milling used compared to hydrodemolition.
• Format:
  PDF
• Funding:
  SPR #5288
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/22936/dot_22936_DS1.pdf
• File Type:
  [PDF - 3.38 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:c491b93f130cddc95c45a29273730e0e2f0aec0a5b928da1405a145908d253d2827885e23a8b9d6dfa7a68ca92c63fc9cf28f8b01134edca19a1cb343d34a14f