LUT University 1 article published in JoVE Environment The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties Ville Lahtela1, Marko Hyvärinen2, Timo Kärki2 1Re-Source Research Platform, School of Energy Systems, LUT University, 2Fiber Composite Laboratory, School of Energy Systems, LUT University Secondary material streams have been shown to include potential raw materials for production. Presented here is a protocol in which CDW-plastic waste as a raw material is identified, followed by various processing steps (agglomeration, extrusion). As a result, a composite material was produced, and mechanical properties were analyzed.