Gluing of hardwood for supporting construction elements
Bernasconi, A.(Ecole d'Ingenieurs du Canton de Vaud, Yverdon-les-Bains (Switzerland))
The better mechanical characteristics and sometimes also the higher durability of hardwood compared to softwood render it useful in construction engineering. What is important when hardwood is used is that the possibility is given of a faultless adhesion, as only then can products be made that fulfil modern requirements with regard to quality and performance. Although the successful practical use of glued hardwood has existed for decades, it is only in the past few years that systematic analyses have been carried out. In the present work we examine fundamental questions regarding the production and use of glued hardwood for supporting construction elements, discuss the types of wood suitable for processing in this way and describe some results from various research projects on the gluing of hardwood to produce construction elements. From this we can draw conclusions on the mechanical properties, performance and the achievable characteristic values of these products.
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