The polished-stone values of a range of aggregates from Malaysia were used to select samples which were made into experimental panels and set into two roads in Malaysia. Measurements of skid resistance were correlated with aggregate type, traffic loading and duration, temperature and the frequency of wet road conditions. Further studies were made of the skid resistance of a range of urban, suburban and residential roads. It is concluded that the major available aggregate type, granite, provides adequate skid resistance for normal main roads, and limestone can be used on lightly trafficked suburban roads. Sites such as bends or junctions may need a higher standard of skid resistance, and this could be achieved by the use of gritstone, which is quarried in small quantities. (Author/publisher)
Abstract