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Working on the railroad? Using concrete could help environment


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Geplaatst op 08 mei 2009 - 01:25

Wood or concrete? Railroads around the world face that decision as they replace millions of deteriorating cross ties, also known as railway sleepers, those rectangular objects used as a base for railroad tracks. A new report concludes that emissions of carbon dioxide - one of the main greenhouse gases contributing to global warming -- from production of concrete sleepers are up to six times less than emissions associated with timber sleepers. The study is scheduled for the June 1 issue of ACS` Environmental Science & Technology.

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