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:
  • Rheology
  • Cement paste
  • Asphalt concrete
  • Rutting
  • Concrete--Testing
  • Pavements, Concrete--Testing
  • Rheology
• 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.
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• Format:
  PDF
• Funding:
  0-5820
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/16770/dot_16770_DS1.pdf
• File Type:
  [PDF - 3.74 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:77aa2f19409a0f8e60ea79ee8b7550967236b66cb72f0a1091807ff10ae2695f