The Development of Correlations Between HMA Pavement Performance and Aggregate Shape Properties

Released on by Jeremy McGahan
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  • The Development of Correlations Between HMA Pavement Performance and Aggregate Shape Properties Book Detail

  • Author : Jeremy McGahan
  • Release Date : 2006
  • Publisher :
  • Genre :
  • Pages :
  • ISBN 13 :
  • File Size : 68,68 MB
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The Development of Correlations Between HMA Pavement Performance and Aggregate Shape Properties by Jeremy McGahan PDF Summary

Book Description: The physical characteristics of aggregates (form, angularity, and texture) are known to affect the performance of hot mix asphalt (HMA) pavements. Efforts to develop relationships between these aggregate characteristics and aggregate performance in HMA pavements have been limited in the past due to inherent inaccuracies in the methods used to measure these characteristics. The recently developed Aggregate Imaging System (AIMS) offers an opportunity to accurately measure aggregate shape characteristics allowing them to be properly related to asphalt performance. This research focused on relating the aggregate characteristics of form, angularity, and texture measured using AIMS to laboratory performance measurements on a wide variety of HMA mixes. The performance of these mixes was evaluated in three projects carried out by the Federal Highway Administration (FHWA) and theTexas Transportation Institute (TTI). During this research, a database of the volumetric, performance, and aggregate shape measurements for mixes used in these projects was created. Statistical analysis was conducted to correlate HMA performance parameters to volumetric and aggregate shape characteristics. The results show the dominant effect that aggregate shape properties have on HMA performance.

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