1279 tons or 553m3 of concrete was saved by introducing approx. 46 800 cobiax void formers into the main slabs. Cobiax void formers are hollow balls made from recycled plastic. The balls are introduced into the concrete slabs to both reduce the weight of the slabs as well as save concrete. Having lighter slabs also means that other structural members can be smaller with the spin-off of saving even more concrete.

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