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Acceptance Tests for Surface Characteristics of Steel Strands in Prestressed Concrete (2008) / Chapter Skim
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Pages 1-2

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 1...
... Although concrete pull-out testing appears to correlate best with transfer length, the evaluation of correlations between the proposed QC test methods and bond quality was based on available mortar pull-out test results for the strand sources. The four test methods that showed the best correlation with bond in concrete, mortar, or both, and that are recommended for inclusion in future QC programs are as follows: • Weight Loss on Ignition (LOI)
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From page 2...
... Limiting the data included in the regression analysis to data collected from a single manufacturing process, such as might be done by an individual strand producer, is expected to significantly improve the correlation of the QC test methods, since the QC test results would be influenced mainly by variations in lubricant and pretreatment concentration with chemical composition remaining relatively constant. This improved correlation would also permit less restrictive thresholds.
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Key Terms

  • lime dip
  • corrosion potential
  • angle measurement
  • organic residue
  • bond quality

  • residue extraction
  • strand sources
  • weight loss
  • prestressed concrete
  • threshold determination

  • transfer length
  • prediction interval
  • individual strand
  • spectroscopy analysis
  • regression analysis

  • additional data
  • acceptance tests
  • proposed methods
  • affect bond
  • strand producer

  • tested demonstrated
  • strand samples
  • individual methods
  • experimental program
  • result relationships

  • allow threshold
  • chemical properties
  • available mortar
  • rapid assessment
  • extraction test


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