By Thomas D. White, Sam R. Johnson, John J. Tzenas, John J. Yzenas
STP 1412 specializes in the impression of mixture houses on HMA functionality and covers a variety of mixture features. invaluable info is gifted on functionality of HMA designed with Superpave protocols and standards for either combos and aggregates.12 papers tackle: mixture sprucing as a security drawback Contribution of the mineral mixture elements to rutting resistance Superpave coarse and positive gradations Validity of the limited sector greatest combination sizes quantity of dirt, particle form, and coarse and superb mixture particle angularity. This publication is a important source for everybody within the paving that produces, specifies, and makes use of aggregates.
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Additional info for Aggregate Contribution to Hot Mix Asphalt (HMA) Performance (ASTM special technical publication, 1412)
075 values. Observed AC contents are also provided. It should be noted that the target AC values shown were used in construction but differ substantially from those used in the sensitivity analysis based on mix designs performed at the University of Nevada, Reno. Taking into account the confounding effects of these off target AC values, the comparison of sensitivity ratios highlighted the elevated sensitivity of coarsegraded mixtures to decreases in AC as compared to the fine-graded mixtures and the sensitivity of all mixtures to increases in AC.
WesTrack - Aggregate Properties - Original Construction," WesTrack Technical Report QC/QA-4, Draft 1, July 1999, Federal Highway Administration and National Cooperative Highway Research Project. , "WesTrack - Aggregate Properties - Replacement Sections," WesTrack Technical Report QC/QA-5, Draft 1, July 1999, Federal Highway Administration and National Cooperative Highway Research Project.  Hand, A. , Epps, J. , and Sebaaly, P. , "Precision of ASTM D5821: Standard Test Method for Determining the Percentage of Fractured Particles in Coarse Aggregate," ASTM Journal of Testing and Evaluation, 2000, Vol.
Compaction was terminated when change in density became minimal. This represented the high-density lane condition. Subsequently, a second paving lane was compacted to a density approximately 64 kg/m 3 lower than the high-density lane. The effect of deviation from design AC to rutting performance in APT tests was evaluated by constructing six mixtures at two different AC levels and compacting the mixtures until the change in density became minimal (high density). Therefore, any difference in test results reflects the effect of deviation from design AC only.
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