Influence of Permeable Rigid Pavement on Vehicle Skid Resistance in Curved Sections of a Roadway

Abstract

The presence of moisture on a pavement causes abrupt changes in direction, slowdowns and even vehicle accidents, because skid resistance is reduced. Therefore, it forces the driver to move in a more conservative way. This paper evaluates the skid resistance of a permeable concrete pavement considering curved sections, which are critical points with difficulty in maneuvering. In addition, the comparison of the International Friction Index (IFI) of two prototypes is developed by performing the British Pendulum and Sand Circle tests. Consequently, the friction coefficient F(s) at different speeds is determined. The results indicate that, in the critical condition, i.e., when the tire is new, the friction F(s) of the permeable pavement is 44.5% higher than that of a conventional pavement when the speed is 60 km/h. Thus, the values obtained contribute to meet the ideal conditions of road design. Therefore, the stopping visibility distance requirements for the permeable pavement is 13.8% less than the distance required by the conventional pavement at a speed of 60 km/h.