Aggregate Properties and the Performance of Superpave-Designed Hot-Mix Asphalt (2005) / Chapter Skim
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Appendix - NCHRP Project 9-35 Aggregate Specification Survey
Appendix - NCHRP Project 9-35 Aggregate Specification Survey
Pages 86-90
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to identify rounded fine aggregates? If yes, do the minimum specification values as a function of design traffic and depth from the pavement surface in your specifications match those in AASHTO MP2?
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In addition to the 51 maximum-to-minimum dimension specified in AASHTO MP2, do you have any additional specification requirements -- for example, 31, 21, flat particles, or elongated particles? If you do not specify ASTM D4791, what test, if any, do you use?
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If you allow both, are your specification requirements the same for both sodium and magnesium sulfate soundness? If you do not use sodium or magnesium soundness, what test, if any, do you use to qualify aggregate durability?
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Do you have permeability specifications that are a function of gradation? Do you vary recommended lift thickness as a function of gradation or nominal maximum aggregate size?
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16) Please identify your most common aggregate types -- for example, granite, limestone, gravel.
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