Author : Jeremy McGahan
Release : 2006
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The Development of Correlations Between HMA Pavement Performance and Aggregate Shape Properties - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Development of Correlations Between HMA Pavement Performance and Aggregate Shape Properties write by Jeremy McGahan. This book was released on 2006. The Development of Correlations Between HMA Pavement Performance and Aggregate Shape Properties available in PDF, EPUB and Kindle. 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.