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Aggregate Tests for Hot-Mix Asphalt Mixtures Used in Pavements (2006) / Chapter Skim
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Pages 34-37

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From page 34...
... The number of APT wheel passes to reach a rut depth of 3.5 mm covers a range of approximately 100. The coarse aggregate UVA is more sensitive at higher traffic levels where the number of wheel passes to reach a 7-mm rut depth covers a range of approximately 14,000.
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From page 35...
... Fine Aggregate Uncompacted Void Content Rutting Rutting performance of fine-graded HMA mixtures is related to fine aggregate UVA. The HMA mixture rutting resistance increases with increasing fine aggregate UVA.
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From page 36...
... HMA mixture total rut depth increases as the amount of D60 or D30 material increases. When used in conjunction with the fine aggregate UVA, neither the D60 nor D30 parameters improve the fine aggregate UVA prediction of HMA mixture rutting.
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From page 37...
... A comprehensive laboratory study was undertaken in NCHRP Project 4-19 to screen aggregate properties and tests related to HMA mixture rutting and moisture effects. The current study built on the experience of that research to produce positive results.
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Key Terms

  • total rut
  • wheel passes
  • rut depth
  • void content
  • fine aggregate

  • aggregate uva
  • test lane
  • coarse aggregate
  • magnesium sulfate
  • sulfate soundness

  • hma mixtures
  • test lanes
  • uva values
  • hma mixture
  • tire pressure

  • uncompacted void
  • particle size
  • apt wheel
  • fine aggregates
  • rutting performance

  • moisture susceptibility
  • erated pavement
  • aggregate test
  • hma performance
  • pavement test

  • blue test
  • tensile strength
  • methylene blue
  • accelerated pavement
  • nchrp project


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