ABSTRACT
ABSTRACT: Pavement wear caused by studded tires continues to be a major cause of rutting in asphalt pavements in Norway and other Nordic countries. Research work conducted in the 1970s and 80s with focus on wear resistant pavements has led to the development of asphalt mixtures containing relatively large-sized hard stone materials. In recent years, however, environmental concerns with respect to noise and dust pollution have led to re-examination of these pavement surfacing materials. To mitigate these environmental problems the development of asphalt mixtures with small size aggregates containing polymer modified binders in which the mortar component plays greater role in resisting wear is being considered. For this purpose a laboratory investigation was conducted on asphalt mortars containing various polymer modified binders. The results of the laboratory investigation showed that mortars containing polymer modified binders have significantly better resistance to studded tire wear than those containing unmodified binders. This paper reports the results obtained from testing of these mortars and a mixture in the laboratory.
