Resource efficient roads

摘要

The widespread use of stone mastic asphalt (SMA) and thin surfacing on UK motorways has driven a significant increase in demand for high polished stone value (PSV) aggregates, with a particular emphasis on 14mm and 10mm sizes. As a result, the highways industry is frequently faced with availability issues, resulting in increased operational, logistical and, in turn, product costs. This approach has also introduced a major challenge with regard to future sustainability of roads and delivering resource efficiency.