Macro-Texture,Friction,Cross Slope and Wheel Track Depression Measurements on 41Typical Texas Highway Pavements.

摘要

The role of macro-texture in imparting friction capabilities to pavement surfaces is of major concern to researchers. Macro-texture is but one of the many variables affecting the interaction at the tire-pavement interface;however,at present its relative importance is questioned. Friction tests obtained at 20, 40,and 60mph with the Texas Highway Department research skid trailer,and macro-texture utilizing four different methods were conducted on forty-one pavement surfaces. These surfaces exhibited widely different friction levels,friction-speed gradients,drainage capabilities,mineralogical properties,and texture classifications. Macro-texture values obtained with the four methods are compared. (Author)