Developing criteria for performance-based concrete specifications.

Details

• Creators:
  Ballard, Zachoriah J. ; Durham, Stephan ; Liu, Rui
• Corporate Creators:
  University of Colorado at Denver
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Mix design
  • Fly ash
  • Cement content
  • Admixtures
  • Concrete
  • Specifications
• Publication/ Report Number:
  CDOT-2013-9
• Resource Type:
  Tech Report
• Geographical Coverage:
  Colorado
• Corporate Publisher:
  Colorado. Dept. of Transportation. Research Branch
• NTL Classification:
  NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance ; NTL-HIGHWAY/ROAD TRANSPORTATION-Design
• Abstract:
  For more than 50 years now, concrete technology has advanced, but CDOT specifications for durability have ; remained mostly unchanged. The minimum cement content for a given strength is derived from mix design ; guidelines that were developed before water reducing admixtures were widely used and accepted. The minimum ; cement content generally controls the mix design process, with many mix designs exceeding the minimum ; strength requirements by 500 to 1,000 psi. Ready mix suppliers that supply to non-CDOT projects have ; developed mix designs that use less cement and more fly ash than CDOT mix designs and exceeded their ; strengths. They are able to accomplish this improvement through gradation optimization and admixture ; combinations. The proposed study tested current CDOT standard mix designs to determine minimum required ; performance criteria that will be used to develop performance-based concrete mix design criteria.
• Format:
  PDF
• Funding:
  22.5
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26097/dot_26097_DS1.pdf
• File Type:
  [PDF - 1.49 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:9aee745392e03996c642b5767f0d7c1bcb65eb317f9e24ebdc22835d1e02f76d44425aae5a38a651059ded0b7e5e751624d0363ffb54801ac50544c25f7128b8