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Identification Of Laboratory Technique To Optimize Superpave Hma Surface Friction Characteristics, Karol J. Kowalski, Rebecca S. Mcdaniel, Jan Olek

JTRP Technical Reports

Wet pavement friction is known to be one of the most important roadway safety parameters. In this research, frictional properties of flexible (asphalt) pavements were investigated.

As a part of this study, a laboratory device to polish asphalt specimens was refined and a procedure to evaluate mixture frictional properties was proposed. Following this procedure, 46 different Superpave mixtures, one stone matrix asphalt (SMA) mixture and one porous friction course (PFC) mixture were tested. In addition, 23 different asphalt and two concrete field sections were also tested for friction and noise.

The results of both field and laboratory measurements were used …

Long Term Performance Of A Porous Friction Course, Rebecca S. Mcdaniel, Karol J. Kowalski, Ayesha Shah, Jan Olek, Robert J. Bernhard

JTRP Technical Reports

In 2003, the Indiana Department of Transportation and the Federal Highway Administration allowed a test section of Porous Friction Course (PFC) to be placed on I74 east of Indianapolis. The design, construction and early performance of that surface were compared to an adjacent SMA surface and a conventional Superpave HMA surface in a report prepared for the Institute for Safe, Quiet and Durable Highways (1). The early performance indicated that the PFC offered several advantages over the SMA and the conventional surfaces, including reduced tire/pavement noise, high friction and surface texture, and reduced splash and spray. There was …