Comparison of conventional and internally cured concrete bridge decks in Utah : Mountain View corridor project.

Details

• Creators:
  Guthrie, W. Spencer ; Yaede, Joseph M. ; Bitnoff, Amanda C.
• Corporate Creators:
  Brigham Young University. Dept. of Civil and Environmental Engineering
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  Bridge Decks Compressive Strength Concrete Bridges Concrete Curing Cracking Field Tests Fine Aggregates Laboratory Tests Modulus Of Elasticity Moisture Content Permeability

  More +
• Publication/ Report Number:
  UT-15.02
• Resource Type:
  Tech Report
• Geographical Coverage:
  Utah
• Corporate Publisher:
  Utah. Dept. of Transportation
• Abstract:
  The objectives of this research were to 1) monitor in-situ moisture and diffusivity for both conventional concrete
  
  and concrete containing pre-wetted lightweight fine aggregate (LWFA), 2) compare deck performance in terms of
  
  early-age cracking, compressive strength, and chloride ingress, and 3) compare concrete properties in terms of
  
  compressive strength, chloride permeability, elastic modulus, and water content in the laboratory using cylinders
  
  cast in the field at the time of deck construction. The research involved field and laboratory evaluations of four
  
  newly constructed bridge decks located in northern Utah, two constructed using conventional concrete and two
  
  constructed using pre-wetted LWFA to promote internal curing. Data from sensors embedded in the concrete decks
  
  indicate that the volumetric moisture content and electrical conductivity of the internally cured concrete were higher
  
  than those of the conventional concrete during the 2-year monitoring period. Laboratory data indicate that the
  
  internally cured concrete was weaker at 1 year following deck construction, passed less current in rapid chloride
  
  permeability testing, had a lower modulus in free-free resonant testing, and had a higher gravimetric moisture
  
  content than the conventional concrete. In the field, the internally cured concrete was weaker at 2 years in Schmidt
  
  rebound hammer testing and exhibited greater chloride concentrations at both 1 and 2 years than the conventional
  
  concrete. The conventional concrete bridge decks had more reflection cracking from the joints between the
  
  underlying pre-cast half-deck panels than the internally cured concrete decks.
  
  
• Format:
  PDF
• Funding:
  2513570
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:80164d005445fb7f11f314c250a4cd7d50ca6608802041807239caa20aedc710
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28762/dot_28762_DS1.pdf
• File Type:
  [PDF - 18.12 MB ]