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Editor in Chief: RAFFAELLO COSSU

UTILIZATION OF DEMOLITION WOOD AND MINERAL WOOL WASTES IN WOOD-PLASTIC COMPOSITES

  • Petri Jetsu - Technical Research Centre of Finland Ltd, VTT, Finland
  • Markku Vilkki - Conenor Ltd, Finland
  • Ismo Tiihonen - Ismo Tiihonen, Finland

DOI 10.31025/2611-4135/2020.13916

Released under CC BY-NC-ND

Copyright: © 2019 CISA Publisher

Editorial History

  • Received: 04 Sep 2019
  • Revised: 20 Dec 2019
  • Accepted: 14 Jan 2020
  • Available online: 05 Mar 2020

Abstract

Wood and mineral wool fractions from demolished buildings were sorted into different categories and processed to the suitable grain size needed for the manufacturing of wood-plastic composites. Processed construction and demolition waste materials mixed with plastics and additives were extruded into hollow test bars using a conical rotary extruder. Test specimens needed for measurements were cut from test bars. The results showed that the mechanical performance of wood-plastic composites based on construction and demolition waste wood, and mineral wool was at a good level and comparable to commonly used wood-plastic composites in decking applications. The highest strength properties of wood-plastic composites were achieved with a plywood fraction and the lowest with materials containing a particle/fibre board fraction. The mechanical performance can be improved by utilizing mineral wool in the formulation of wood-plastic composites. A material mixture containing several wood fractions as well as mineral wool also gave good strength properties. Only a minor reduction in strength properties was measured when recycled plastic was utilized meaning that wood-plastic composites suitable for many types of applications can be produced entirely from recycled materials.

Keywords


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