Concrete deck material properties : final report.

Details

• Alternative Title:
  Cornell University Research Consortium
• Creators:
  Subramaniam, Kolluru V. ; Agrawal., Anil
• Corporate Creators:
  City University of New York. City College. Department of Civil Engineering
• Corporate Contributors:
  New York (State). Dept. of Transportation
• Subject/TRT Terms:
  • Concrete
  • Cracking
  • Shrinkage
  • Aggregate mixtures
  • Concrete--Cracking
  • Pavements, Asphalt concrete--Cracking
• Publication/ Report Number:
  C-02-03
• Resource Type:
  Tech Report
• Geographical Coverage:
  New York
• Edition:
  Final report
• Corporate Publisher:
  New York (State). Dept. of Transportation
• Abstract:
  The two-fold focus of this study was (a) to develop an understanding of the mechanisms responsible for causing ; cracking in the concrete; and (b) to study the influence of the local materials on the performance of NYSDOT’s HP ; concrete mixture. Recommendations for minimizing the premature cracking in HP concrete decks related to restrained ; volumetric contraction are developed from the results of this investigation. It is important to reduce the total ; temperature rise and the temperature gradient across the steel girder to minimize the level of tensile stress in concrete ; in the first few days after casting, while the concrete goes through the heating and cooling produced by hydration heat. ; The local materials for use in HP concrete should be carefully evaluated. The type of coarse aggregate used in the ; mixture produces significant differences in the strength and elastic modulus of concrete. Differences in cementitious ; material contribute to significant differences in autogenous and drying shrinkage. Recommendations pertaining to ; cementitious materials are: (a) If silica fume is used, it should only to be added separately to the mix, unless the ; reactivity of blended silica fume is established and found comparable to silica fume addition; (b)Only the use of Type ; I/II or Type II cement should be permitted; and (c) When ground granulated blast furnace slag is used, it should be ; evaluated to ensure that it does not provide high early reactivity.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16806/dot_16806_DS1.pdf
• File Type:
  [PDF - 4.04 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:ea15379897761e84586c560c78cdb603462be920f5d899cc4470d9f768a98535