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Civil engineering makes use of recycled tires

Civil engineering projects often need lightweight fill. For a readily available, recycled fill, Bernie Mills chose tire-derived aggregate

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<p>You know there, are engineers that design using non-traditional matters, and then there’s engineers that design using traditional materials. I guess that’s what separates Stantec from some other companies—we have the technical know-how in order to take a project and design using non-traditional methods.</p> <p>I was contacted by the New Brunswick Department of Transportation because they had experienced a pretty large, significant embankment failure. Because the embankment failed, it caused the foundation soil to be weak, weaker than it already was. That’s why we needed lightweight fill.</p> <p>We looked at many options, and tire-derived aggregate (TDA) was the option that was ultimately selected. During the construction process, my understanding was that the Nova Scotia Transportation Department and Recycled Research Fund Board (RRFB), I think they got wind of this project, so they actually flew to the site to St. Stevens. They wanted to see for themselves, firsthand, how the province of New Brunswick was using this new material.</p> <p>This Ragged Lake Project is the first tire-derived aggregate project of its kind in Nova Scotia. The Halifax Regional Municipality was in the process of designing a roadway access ramp. So we reviewed it, and yes, in fact, we were able to design the TDA application for this new roadway. And because of that, Nova Scotia has adopted tire-derived aggregate as their sole-recycling method.</p> <p>There’s always a supply of recycled tires, and so because of that, finding practical civil engineering applications using TDA is a sustainable market.</p> <p>The use of TDA in transportation embankments is something that’s going to be new. Provinces across Canada can really benefit from the use of TDA. With the sustainability piece, there’s going to be some really good applications for TDA in the future. I think the future is very bright.</p> <p>We know how to design engineering applications using TDA. Because we’ve done it.&nbsp;</p>

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