Date of Graduation


Document Type


Degree Type



Statler College of Engineering and Mineral Resources


Civil and Environmental Engineering

Committee Chair

John Zaniewki

Committee Member

John Quaranta

Committee Member

Karl Barth


To ensure the pavements in West Virginia have adequate skid resistance the Division of Highways evaluates and approves skid resistant aggregate sources for all wearing courses on roads with an ADT of 3,000 or greater. Unfortunately, the supply of skid aggregates in West Virginia is depleting quickly. To find a potential alternative to using skid resistant aggregates, laboratory polishing of asphalt samples was performed using a Circular Track Polishing Machine, and friction was tested using a British Pendulum Tester. The experiment was designed to investigate how a specific aggregate type provides skid resistance to a hot asphalt mixture.

The objective of this research was to evaluate the repeatability of a newly developed polishing procedure, establish a difference between skid and non-skid mixes, and investigate the effect of the amount of skid resistant aggregate on the friction an asphalt mixture. Four mixes with varying amounts of skid aggregate were evaluated. The four mixes were compacted, polished, and tested following a recommended protocol established in an earlier phase of the research. The procedure was then used to determine the friction values of the mixes. Insoluble residue tests were then performed on the skid specific mixes to verify the skid resistant aggregate contents.