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:
  Admixtures Cement Content Concrete Fly Ash Mix Design 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
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:9aee745392e03996c642b5767f0d7c1bcb65eb317f9e24ebdc22835d1e02f76d44425aae5a38a651059ded0b7e5e751624d0363ffb54801ac50544c25f7128b8
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26097/dot_26097_DS1.pdf
• File Type:
  [PDF - 1.49 MB ]