Dense Graded Concrete, Project FX(CX)083-1(53)

Details

• Creators:
  Ardani, Ahmad
• Corporate Creators:
  Colorado. Department of Transportation
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Dense graded aggregates
  • Petrography
  • Air content
  • Alternatives analysis
  • Compressive strength
  • Concrete
  • Field tests
  • Gap grading
  • Geological surveying
  • Laboratory tests
  More +
• Publication/ Report Number:
  CDOT-DTD-R-93-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Colorado
• Edition:
  Final Report
• Corporate Publisher:
  Colorado. Department of Transportation
• Description:
  This report describes and compares the performance of a dense graded mix against the traditional standard (gap-graded) mix. The dense graded mixture showed increased compressive strength by approximately ten percent over the gap graded mixture under the controlled laboratory condition. However, similarly prepared mixture in the field showed lower strength. It is the general consensus that the lower strength of the dense graded mix could have been caused by the higher slump (more water) and higher air. The results of the petrographic examination confirmed this phenomenon. Dirty intermittent aggregate may have caused lower strength for the dense mix. The concept of using dense graded mixture in place of the traditional gap graded mixture looks promising. However, there is still room for improvement in a fully implemented paving operation. More research is needed in this area to identify the proper proportioning of aggregate, air entraining admixture, and water cement ratios.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93903/dot_93903_DS1.pdf
• File Type:
  [PDF - 2.95 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:65ce59aee9b2d9c2db07bab65ac7ea2569b950d4c27713adb21f88407c659a0e41b9c62a37500d029656e2dbc396da3c207bc703a1f5254573e325540dfb2bbb