As part of the joint research project "Recycling for Re-Use" funded by Fachagentur Nachwachsende Rohstoffe e.V. FNR, the Institute of Building Construction and Timber Structures (IBHolz) dismantled and processed timber cross-sections from several roof trusses between 40 and 90 years old. One aspect of the research project is dedicated to determining the strength and stiffness characteristics of the old wood using non-destructive evaluation criteria.
At the project partner Microtec in Brixen, the leading company in the field of mechanical wood sorting, 243 wood cross-sections from the dismantled roof trusses were sorted mechanically using the Goldeneye multi-sensor quality scanner. Thanks to Microtec's extensive expertise, a targeted scanning and evaluation process was carried out and a very good database was obtained for determining the correlation between evaluation criteria and mechanical characteristics. The samples were then delivered to the Leipzig Institute for Materials Research and Testing (MFPA Leipzig GmbH), where normative component tests were carried out to determine the strength and stiffness characteristics.
Prof. Mike Sieder, Jan Grobe and Peer Janßen from IBHolz would like to express their sincere thanks to Microtec, Mr Martin Bacher and Mr Matthias Demetz for their comprehensive and competent support and for the interesting and informative time spent in Brixen.