Relationship between PSV and in situ friction: a Norwegian case study
2009
Polishing of the aggregates used in pavements may reduce the friction of the road surface, which in turn may lead to slippery, hazardous conditions in traffic. Although the use of studded tyres leads to wearing of the pavement and thus prevents the aggregate becoming smooth, it also results in the generation of airborne dust. As a consequence, the trend to reduce the use of studded tyres and increase the use of wear-resistant aggregate has resulted in more polishing. The paper reports some analyses of polished stone values for the aggregates most commonly used in Norway and considers whether there is a correlation between the polished stone value and in situ friction for mixtures of aggregates with varying polishing and wearing properties.
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