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Test Methods for Characterizing Aggregate Shape, Texture, and Angularity (2007) / Chapter Skim
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Use of Aggregate Acceptance Tests in Specifications
Pages 45-46

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From page 45...
... In fact, the technicians and managers in some of these field laboratories have indicated that they already operate systems that include electronics similar to those used in the imaging systems, suggesting that the recommended test methods can easily be used in central and field laboratories. Use of Aggregate Acceptance Tests in Specifications The literature search has shown that state highway agencies vary significantly in the extent of their using tests for measuring aggregate characteristics and incorporating criteria based on these tests in specifications.
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From page 46...
... • The recommended test methods include procedures for measuring texture and the loss of texture due to polishing. This feature can be used as an indicator of pavement friction characteristics.
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Key Terms

  • aggregate tests
  • develop specifications
  • developed based
  • pavement layers
  • recommended test

  • coarse aggregates
  • field laboratories
  • assurance programs
  • classification methodology
  • shape analysis

  • incorporating criteria
  • ratio shape
  • indirect aggregate
  • easily accommodate
  • classifying aggregate

  • top lighting
  • superior aggregate
  • team visited
  • aggregate particles
  • gate shape

  • allow analysis
  • detect changes
  • average indices
  • measuring texture
  • illinois aggregate

  • methods include
  • improved repeatability
  • criteria based
  • limited ability
  • recommended tests


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