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Aggregate Testing

Coarse Aggregate Angularity (CAA) (18)


Description
Welcome to the Coarse Aggregate Angularity course. This course describes the coarse aggregate angularity (CAA) test, a method of determining the angularity of coarse aggregate, which is important in determining hot mix asphalt mixture susceptibility to deformation under load (rutting). This includes a discussion on the origins of this test, the alternate uncompacted void content test, a description of the current visual test method, and an examination of typical results.
Content
  • Overview
  • Background
  • Purpose and Origins
  • Origins
  • Alternate Coarse Aggregate Angularity Tests
  • Uncompacted Void Content
  • Figure 5 and Figure 6
  • Summary and Approximate Test Time
  • Summary
  • Approximate Test Time
  • Basic Procedure
  • Results
  • Parameters Measured
  • Specifications
  • Typical Values
  • Calculations
  • (Quiz) Coarse Aggregate Angularity
Completion rules
  • All units must be completed
  • Leads to a certificate with a duration: Forever
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