Quantification of Coarse Aggregate Shape and Its Effect on Engineering Properties of Hot-Mix Asphalt Mixtures

Jian Shiuh Chen, Ming Shen Shiah, Hong Joy Chen

研究成果: Article同行評審

30 引文 斯高帕斯(Scopus)

摘要

This paper is aimed at quantifying coarse aggregate shape in an efficient manner and relating aggregate characteristics to mix properties. Digital image analysis was used to evaluate aggregate characteristics such as elongation, flatness, and other shape indices. The following particle shapes were selected for this study: cubical, rod, disk, and blade. Data showed that the morphological characteristics of coarse aggregate correlated well with the results of other indirect tests such as the particle index. Cubical particles possessed the best rutting resistance over the other shapes. Flaky and/or elongated aggregate in a mixture resulted in a lower resistance to shear deformation. The morphological characteristics of coarse aggregates found from image analysis were in good agreement with the engineering properties of hot-mix asphalt (HMA) mixtures. This paper presents a precise method to evaluate the aggregate characteristics in an HMA mix and demonstrates their effects on pavement performance.

原文English
頁(從 - 到)513-519
頁數7
期刊Journal of Testing and Evaluation
29
發行號6
DOIs
出版狀態Published - 2001 十一月

All Science Journal Classification (ASJC) codes

  • 材料科學(全部)
  • 材料力學
  • 機械工業

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