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Acceptance Tests for Surface Characteristics of Steel Strands in Prestressed Concrete (2008) / Chapter Skim
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Pages 35-36

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From page 35...
... This included limited mechanical testing (pull-out testing from concrete, from Portland cement mortar, and from gypsum plaster-based mortar) and extensive surface and chemical testing (contact angle, examination under UV light, pH, LOI, loss in alkali bath, change in corrosion potential, corrosion rate, surface roughness, organic residue extraction/FTIR analysis, and elemental analysis)
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From page 36...
... Future Work Although a variety of researchers has made conclusions about the most appropriate mechanical test methods for evaluating strand bond, the limited results of this research program suggested that concrete pull-out test results correlated better with transfer length test results than with mortar pull-out test results. Although the mortar pull-out test demonstrated good correlation, it is not clear that this is the best test for measuring the strand bond quality.
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Key Terms

  • transfer length
  • strand source
  • contact angle
  • correlation round
  • prediction interval

  • mechanical test
  • corrosion potential
  • lime dip
  • organic residue
  • corrosion rate

  • cement mortar
  • test method
  • chemical test
  • portland cement
  • strand sources

  • weight loss
  • alkali bath
  • length testing
  • angle measurement
  • length tests

  • lower bound
  • surface roughness
  • residue extraction
  • elemental analysis
  • adjusted coefficient

  • bond performance
  • bond quality
  • ftir analysis
  • regression model
  • regression models


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