Working on the railroad? Using concrete could help environment

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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<p><a href="http://www.physorg.com/news160943084.html">Working on the railroad? Using concrete could help environment</a></p> <p>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’ <i>Environmental Science & Technology</i>. </p>