Alternative Conditioning Method to Calculate Formation Factor for Wisconsin Concrete Pavement

Details

• Creators:
  Tanesi, Jussara
• Corporate Creators:
  American Engineering Testing, Inc. ; Wisconsin Highway Research Program
• Corporate Contributors:
  Wisconsin. Dept. of Transportation. Library and Research Unit ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Bulk Resistivity Concrete Curing Concrete Pavements Conditioning Electrical Resistivity Estimation Theory Formation Factor Porosity Service Life Surface Resistivity Surface Tension Transport Properties (Physics)

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• Publication/ Report Number:
  0092-24-04
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report: October 2023 - September 2025
• Corporate Publisher:
  Wisconsin. Dept. of Transportation. Research and Library Unit
• Abstract:
  Formation factor has been identified as one of the main properties related to concrete transport properties. Conditioning specimens in solution, such as the default conditioning in ASTM C1876 has been proposed as a means to obtain the formation factor. However, this conditioning has been criticized for several reasons. This project investigates the effect of different conditionings on bulk resistivity and formation factor. A total of 19 mixtures were evaluated, and six conditioning methods were investigated. Estimation of the pore solution resistivity was also investigated. It was observed that conditioning affected the degree of reaction and the pore structure, and as a result, bulk resistivity and formation factor. The modified NIST model (Montanari model) was revised and provided good estimation of the pore solution resistivity that can be used to determine the formation factor. For mixture qualification purposes, it was recommended to use sealed specimens and to estimate the pore solution resistivity through modeling and then determine the formation factor. For QA/QC purposes, it was recommended to determine the bulk resistivity of specimens cured in limewater or specimens subjected to accelerated curing.
• Format:
  PDF
• Funding:
  WHRP 0092-24-04
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:2189bdd0284e2afa0f3bbd16c22914f98c3abf7dc7c5902038f0b5568e442ccff09bcf59d58eca1c169626a3a53d4b755bf96fb501f7112d76c8420512245d73
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/89217/dot_89217_DS1.pdf
• File Type:
  [PDF - 1.94 MB ]