Evaluation of the Impact of Asphalt Mix Segregation on Pavement Performance

Abstract

A full-scale experiment was conducted at the Florida Department of Transportation (FDOT)’s accelerated pavement testing (APT) facility to evaluate the impact of segregation on hot mix asphalt (HMA) pavement performance. Localized areas of segregation were artificially generated during the construction of the APT test tracks, using improper paving techniques without any manipulation of the aggregate gradation. The subsequent APT results showed that, under similarly controlled conditions, the segregated locations exhibited significantly higher rutting than the non-segregated areas. Furthermore, supplementary field and laboratory tests indicated that the segregated locations had, in comparison, greater cracking, raveling, and tire-pavement interaction noise potentials.

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