Evaluation of properties of porous friction course mixes for different gyration levels

SN Suresha, V George, AUR Shankar - Journal of materials in civil …, 2009 - ascelibrary.org
Journal of materials in civil engineering, 2009ascelibrary.org
Porous frictions courses (PFCs) are characterized by high percent air voids content, and are
widely used as pavement surface drainage layers. This paper presents details on the
laboratory investigation performed on evaluation of properties of PFC mixes using the
Superpave gyratory compactor. It also, provides a brief review of the latest specifications
related to standard practices for mix design and the uses of these mixes adopted by various
agencies. Major differences were observed in the design gyrations (N design) and the …
Porous frictions courses (PFCs) are characterized by high percent air voids content, and are widely used as pavement surface drainage layers. This paper presents details on the laboratory investigation performed on evaluation of properties of PFC mixes using the Superpave gyratory compactor. It also, provides a brief review of the latest specifications related to standard practices for mix design and the uses of these mixes adopted by various agencies. Major differences were observed in the design gyrations and the design aggregate gradations. In this study, six gradations (G) were investigated with binder contents (BCs) ranging between 4.0 and 5.0% by mass of the total mix, for various gyration levels (N). The effect of N, G, and BC on the volumetric properties, unaged abrasion loss, permeability, and the permanent deformation characteristics of PFC mixes were investigated. The experimental results were statistically analyzed to identify the major influencing factors and their significance.
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