Greenrail S.r.l., winner of SME Phase I and Seal of Excellence SME Phase II has designed an innovative composite railway sleeper. Greenrail Sleeper, patented in 122 countries, combines the advantages of concrete sleepers with the ones of composite sleepers. It is made of an inner core in concrete, covered by an elastic outer shell obtained from recycled plastic and ELT (End-of-Life Tyres), which r ...