2012•Procedia - Social and Behavioral SciencesOpen access

Effect of Aggregate Gradation on Rutting of Asphalt Pavements

Amir Golalipour, Ehsan Jamshidi, Y Niazi, Zahra Afsharikia, Mahmood Khadem

Abstract

Permanent deformation (i.e. rutting) of asphalt pavements is one of major types of distress modes experienced in the service life of pavements. Aggregates are one of the key building materials used in the construction industry and the largest portion of an asphalt pavement. Therefore, aggregate characteristics impressively affect the performance of asphalt pavements. Gradation is one of the important characteristics of aggregates affecting permanent deformation of hot mix asphalt. The objective of this research is to investigate the impact of aggregate gradation variations on rutting characteristics of asphalt concrete mixtures.

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Key concepts: Gradation, Rut, Asphalt, Aggregate (composite), Asphalt pavement, Geotechnical engineering, Service life, Asphalt concrete