Finger-jointed Eucalyptus globulus with 1C-PUR adhesive for high performance engineered laminated products

Eucalyptus globulus is one of the hardwood species growing in Europe with the best mechanical properties and great natural durability. In high performance engineered laminated products, finger-joints play a key role. The aim of this research is developing high strength finger-joints of eucalyptus using 1C-PUR adhesive. The influence of geometric and material parameters, assembly pressure and failure modes on finger-joint bending strength is investigated. All the configurations achieved at least 50 N/mm2 of characteristic strength. With an accurately fitting of geometric parameters and end pressure, the characteristic strength reached 76 N/mm2 indicating a possible strength class GL48c or even higher.