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Mix Design Practices for Warm-Mix Asphalt (2011) / Chapter Skim
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Appendix D - Proposed Standard Practice for Measuring Properties of Warm Mix Asphalt (WMA) for Performance Analysis Using the Mechanistic-Empirical Pavement Design Guide Software
Pages 93-100

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From page 93...
... 93 A P P E N D I X D Proposed Standard Practice for Measuring Properties of Warm Mix Asphalt (WMA) for Performance Analysis Using the Mechanistic-Empirical Pavement Design Guide Software
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From page 94...
... REFERENCED DOCUMENTS 2.1. AASHTO Standards: R 35, Superpave Volumetric Mixture Design T 166, Bulk Specific Gravity of Compacted Asphalt Mixtures Using Saturated Surface-Dry Specimens T 209, Theoretical Maximum Specific Gravity and Density of Bituminous Paving Mixtures T 269, Percent Air Voids in Compacted Dense and Open Asphalt Mixtures T 312, Preparing and Determining the Density of Hot-Mix Asphalt (HMA)
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From page 95...
... 2.2. Other Documents: ASTM D 3549, Thickness of Height of Compacted Bituminous Paving Mixture Specimens • Equipment Specification for the Simple Performance Test System, Version 3.0, Prepared for National Cooperative Highway Research Program (NCHRP)
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From page 96...
... SUMMARY OF THE PRACTICE 4.1. This practice describes methods for preparing WMA test specimens and testing methods to measure the dynamic modulus, low temperature creep compliance, and low temperature strength of WMA mixtures.
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From page 97...
... Analyze the resulting data and prepare a dynamic modulus master curve in accordance with AASHTO TP 61. Note 1 – A Microsoft Excel workbook "MASTERSOLVER2.1.xls" was developed in NCHRP Project 09-29 to perform this analysis.
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From page 98...
... Compact three 150 mm diameter by 115 mm high gyratory specimens in accordance with AASHTO T 312 to a void content that is 1 percent higher than the target test specimen air void content. The target test specimen air void content should be representative of the in-place air void content required by the agency specifications.
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From page 99...
... Record the bulk specific gravity of the test specimen. Note 2 – When wet sawing methods are used, measure the immersed mass followed by the surface dry mass followed by the dry mass to minimize drying time and expedite the specimen fabrication process.
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From page 100...
... 8.3.2. Target air voids and the actual air voids for the specimens tested.
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Key Terms

  • test specimen
  • mix asphalt
  • warm mix
  • master curve
  • void content

  • air void
  • modulus master
  • specific gravity
  • low temperature
  • air voids

  • measured dynamic
  • bulk specific
  • tensile strength
  • analysis using
  • performance analysis

  • creep compliance
  • modulus data
  • test specimens
  • tensile test
  • indirect tensile

  • temperature creep
  • pavement design
  • compacted paving
  • design guide
  • corrected tensile

  • hot mix
  • phase angle
  • paving mixture
  • target test
  • fitted dynamic


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