scope:

This method covers the sample preparation and polishing of asphalt mixtures for dynamic friction testing using a three-wheel polishing device (TWPD). This standard is to be used with compacted asphalt mixture slab specimens. Other specimen preparation procedures would be needed for assembling a group of gyratory cylinders to be polished using a TWPD.

The values stated in SI units are to be regarded as the standard. Other units are presented for informational purposes. SI units shall be used when determining results to be used in Equation 1.

This standard practice may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.