Influence of Permeable Rigid Pavement on Vehicular Slip Resistance on Curved Sections of a Highway

Abstract

The presence of moisture on a pavement causes sudden changes in direction, decreased speed and even vehicular accidents, because the slip resistance is reduced. Therefore, it forces the driver to travel in a more conservative way. This article evaluates the slip 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 carrying out the British Pendulum and Sand Circle test. Therefore, the friction coefficient F(s) at different speeds is determined. The results indicate that, in the critical condition, that is, when the tire is new, the friction F(s) of the permeable pavement is 44.5% greater compared to a conventional pavement when the speed is 60 km/h. This is, how the values obtained contribute to meeting the ideal conditions of a road design. Therefore, the stopping visibility distance requirements for the permeable is 13.8% less than the distance required for the conventional pavement when presenting a speed of 60 km/h.