Requirements Road 273 outside Sandviken in Sweden needed resurfacing and the use of recycled material was required. The contractor, NCC Roads AB, suggested using a paving technique that consumed less energy on part of the route. Solution Use of foamed bitumen – as part of the NCC Green Asphalt® concept – lowered the asphalt production temperature from 160°C to 120°C. Bitumen foam is formed by injecting water and air under pressure into hot

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