UNE-EN 302-4:1994 Adhesives for load-bearing timber structures. Test methods. Part 4: Determination of the effects of wood shrinkage on the shear strength
This part of EN 302 describes a method for determining the extent to which shrinkage of wood under drying conditions can weaken an adhesive joint. It is appropriate for the following applications: a) to assess the conformity of adhesives with respect to Standard EN 301; b) to assess the suitability for use and quality of adhesives for wooden structures under load; c) to establish whether or not the adhesive is capable of resisting the stresses due to the contraction of the wood, without unacceptable loss of strength. This test is primarily intended to obtain data for the classification of adhesives used in wooden structures under load according to their suitability for use in defined climatic environments. This test is carried out with spruce (Picea abies L). This method is not intended to provide numerical design data and does not necessarily represent the behavior of the glued part in service. It is not intended to be used to assess the suitability of adhesives in the construction of wood-based panels.
UNE-EN 302-4:1994 history
2023UNE-EN 302-4:2023 Adhesives for load-bearing timber structures - Test methods - Part 4: Determination of the effects of wood shrinkage on the shear strength
2013UNE-EN 302-4:2013 Adhesives for load-bearing timber structures - Test methods - Part 4: Determination of the effects of wood shrinkage on the shear strength
1994UNE-EN 302-4:1994 Adhesives for load-bearing timber structures. Test methods. Part 4: Determination of the effects of wood shrinkage on the shear strength