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Guidelines for Early-Opening-to-Traffic Portland Cement Concrete for Pavement Rehabilitation (2005) / Chapter Skim
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Summary
Pages 1-3

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
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From page 1...
... The results were analyzed to draw conclusions regarding the durability of the mixtures and to form the basis for the guidelines. It is expected that the application of these guidelines will enable SHAs to better understand mixture design, proportioning, and construction practices that affect EOT concrete durability and to achieve longer-lasting EOT concrete repairs.
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From page 2...
... Some of these 6- to 8-hour EOT concrete mixtures were made with Type III cement and Type F HRWR and had low air contents. In cases where significant dilation occurred, the dilation correlated mildly with the spacing factor as determined by ASTM C 457.
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From page 3...
... The following findings should be considered in selecting EOT concrete mixtures: • Durable 6- to 8-hour and 20- to 24-hour EOT concrete repairs can be constructed, but the 6- to 8-hour EOT concrete materials are more prone to durability-related problems, and thus the risk of premature failure is heightened when the fastestsetting materials are used. Since these materials are also more costly, 6- to 8-hour EOT concrete should be used only in applications where the decrease in user costs incurred from shortened lane closures can justify the added expense and risk.
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Key Terms

  • concrete mixtures
  • type iii
  • iii cement
  • concrete repairs
  • fresh concrete

  • mixture design
  • air content
  • spacing factor
  • affect eot
  • concrete durability

  • mixtures performed
  • content measured
  • multiple admixtures
  • pavement rehabilitation
  • understand mixture

  • construction practices
  • field concrete
  • selecting eot
  • cement concrete
  • avoid eot

  • increase concrete
  • hardened concrete
  • concrete strength
  • concrete materials
  • mixtures met

  • mixtures obtained
  • construction process
  • necessarily increase
  • factor below
  • user costs


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