INVESTIGATION INTO INFLUENCE OF SURFACE TEXTURE OF RIGID PAVEMENT ON SKID RESISTANCE AND SURFACE AND TYRE WEAR

• Main Author: Roestaman
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/2777
• Institution: Institut Teknologi Bandung

INVESTIGATION INTO INFLUENCE OF SURFACE TEXTURE OF RIGID PAVEMENT ON SKID RESISTANCE AND SURFACE AND TYRE WEAR, Roestaman, 1991, Program Sistem dan Teknik Jalan Raya, Program Pascasarjana Institut Teknologi Bandung. Surface texture is considered the most important aspect of a pavement surface affecting its skid resistance capabilities. Conversely, providing adequate skid resistance can mean creating a rough surface texture which will result in increasing tyre wear. On the one hand, the surface texture should provide adequate skid resistance for safety requirements while, on the other hand, it should be as smooth as possible to minimise tyre wear. These requirements are clearly conflicting. It is important to obtain a suitable surface texture which provides a satisfactory answer between these two extremes. Six octagonal test surfaces of 1.00 m inside diameter, 120 mm thick with a concrete strength fc 42 MPa were made with 5 angles of grooving, namely parallel,-and at 30, 45, 60 and 90 degrees to the centreline of the panel. One further panel with rounded chipping texture was also made. The centreline of the panel was defined as the centreline of the zone travelled by the tyres. The skid resistance values of the surfaces were obtained by a portable skid resistance tester with the pendulum movement set up in the direction of wheel travel. In determining texture depth of the surfaces, a 'sand-patch' method was adapted from TRRL Road Note 27. The tyre wear was measured using a weight loss method. The values of the measurements were recorded for every 39,000 cycle repetitions of the wheels, equivalent to 125 kilometres of wheel travel. The temperature of the surfaces at every stage was also recorded. The last stage was when the cycle repetitions achieved 936,000 or 3,000 kilometres of wheel travel. For the purpose of comparison, two types of tyre tread patterns were tried. The results indicated that the factors of quality of concrete surface, initial skid resistance, grooving type and technique, texture depth, tread pattern of tyre used, temperature of tyre surface when travelling, and tyre quality influenced the tyre wear. The use of cement-grooved surfaces gave an advantage to the residual skid resistance after tyre travel compared with that of the rounded chipping-added surface, but produced high tyre wear. The effectiveness and efficiency of a groove-angled surface depended primarily upon the tread pattern used. Relationships were also found between the groove angles and the skid resistance values, and the texture depths and the skid resistance values