Skid Resistance Studies:Aggregate-Skid Resistance Relationships as Applied to Pennsylvania Aggregates.

摘要

The skid resistance studies are concerned with these problems.:To what degree do the various aggregates tested contribute to the skid resistance properties of pavement;and what is the performance record of these aggregates when affected by traffic passes and seasonal changes. Research activities from 1960to 1968indicated skid resistance values on bituminous concrete pavements were governed primarily by coarse aggregate properties. In order to evaluate these aggregate parameters a series of test strips were planned and constructed in 1968-69for periodic skid testing. The eleven test strips included a representative cross-section of the more than 340sources producing aggregates for use in Pennsylvania. Petrographic analysis was made of the coarse aggregates used in the test strips and skid tests were conducted periodically at approximately one-month intervals throughout the study.