Engineers are building bridges with recycled wind turbine blades
, wind turbine blades take up huge amounts of space in landfills. Once there, the ultra-sturdy, fiber-reinforced plastics they’re made of don’t break down easily. Decommissioned wind turbine blades, if they’re not just stockpiled, are often destined for landfills today. The main alternative, incinerating them for energy, creates additional pollution.That could change if ideas like blade bridges take off.
The company’s first blade bridge took about three years to test, permit, and build. After harvesting decommissioned blades from a wind farm in Germany, the blades were subjected to a battery of engineering tests in partnership with Poland’s Rzeszów University of Technology before being cut up to create the primary support structures for a pedestrian footbridge. In October, Amnet installed that bridge over a river in Szprotawa, the small town where the company is headquartered.
The team behind the new Irish blade bridge also believes they will be cost-competitive with more traditional bridges in addition to offering environmental advantages. Angela Nagle, a civil engineering Ph.D. candidate at the University College Cork and a member of the ReWind network, says that by using blades decommissioned from a wind farm in Belfast, the team avoided nearly 800 kilograms of CO2 emissions that would have occurred had they used steel girders.
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