Using cement paste rheology to predict concrete mix design problems : technical report.

Details

• Creators:
  Mukhopadhyay, Anol K. ; Jang, Sehoon
• Corporate Creators:
  Texas Transportation Institute
• Corporate Contributors:
  Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  Asphalt Concrete Cement Paste Concrete--Testing Pavements, Concrete--Testing Rheology Rutting
• Publication/ Report Number:
  FHWA/TX-09/0-5820-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas
• Edition:
  Technical report; Sept. 2006-Aug. 2008
• Corporate Publisher:
  Texas Transportation Institute
• Abstract:
  The complex interaction between cement and chemical/mineral admixtures in concrete mixture sometimes leads to
  
  unpredictable concrete performance in the field, which is generally defined as concrete incompatibilities. Cement paste
  
  rheology measurements instead of traditional workability tests can have a great potential to detect those
  
  incompatibilities in concrete before the concrete is placed to avoid setting time, workability, and curing-related issues,
  
  which sometimes leads to severe early-age cracking especially in severe weather conditions. The objective of the
  
  present study was to examine the applicability of the Superpave Dynamic Shear Rheometer (DSR) to measure cement
  
  paste rheology in one hand and identify cement and mineral/chemical admixtures incompatibilities based on cement
  
  paste rheological behavior on the other hand.
  
  Based on the extensive laboratory investigation, it is observed that DSR in modified form can measure cement paste
  
  rheology with permissible repeatability and sensitivity and has a great potential to identify cement and
  
  mineral/chemical admixture incompatibilities. The heat of hydration data from isothermal calorimeter test and setting
  
  time results for the studied mixtures have strongly supported the rheology-based observations. A procedure to
  
  formulate rheology-based acceptance criteria has been developed based on the available test results. Further refinement
  
  of these acceptance criteria based on detailed work covering a wide range of incompatibilities and validation through
  
  implementation efforts is warranted. This will ultimately help concrete producers and district laboratories to detect
  
  problematic combinations of concrete ingredients during the mixture design process. The researchers also investigated
  
  t he feasibility of the mini slump cone test as an alternative or supporting tool for the rheology test.
  
  
• Format:
  PDF
• Funding:
  0-5820
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:77aa2f19409a0f8e60ea79ee8b7550967236b66cb72f0a1091807ff10ae2695f
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16770/dot_16770_DS1.pdf
• File Type:
  [PDF - 3.74 MB ]