Finger-jointed Eucalyptus globulus with 1C-PUR adhesive for high performance engineered laminated products. (15th March 2017)

• Record Type: Journal Article
• Authors: Lara-Bocanegra, Antonio José; Majano-Majano, Almudena; Crespo, Jorge; Guaita, Manuel
• Is Part Of: Construction & building materials. Volume 135(2017)
• Page Start: 529
• Page End: 537
• Publication Date: 2017-03-15
• Subjects: Finger-joint -- Eucalyptus globulus -- 1C-PUR -- Engineered laminated products -- Bending strength; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2017.01.004
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: The influence of several variables on finger-joint bending strength were analyzed. Suitable joint configuration leads to possible GL48c strength class or even higher. The most common failure mode occurs along the bondline surfaces of the joint. Longest finger length and smallest tip width give the best results. Good correlations between finger-joint strength and lamella modulus of elasticity. Abstract: 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/mm 2 of characteristic strength. With an accurately fitting of geometric parameters and end pressure, the characteristic strength reached 76 N/mm 2 indicating a possible strength class GL48c or even higher.