BONDING PERFORMANCE OF TROPICAL MULTI SPECIES GLUED SOLID TIMBER

Cedric Horphe Ndong Bidzo (1) , Rostand Moutou Pitti (2, 3) , Samuel Ikogou (4) , Kaiser Beat (5) , Claude Feldman Pambou Nziengui (4) , Evelyne Toussaint (2) , Serge Ekomy Ango (6)

1 Ecole Nationale des Eaux et Forêts, Libreville
2 IP - Institut Pascal
3 CENAREST - Centre national de la recherche scientifique et technologique
4 USTM - Université des Sciences et Techniques de Masuku
5 Ecowood Gabon
6 Institut de Recherches Technologiques

This paper investigates cracking in mode I of tropical multi species glued solid timbers. The objective is to assess the influence of the resistance of glue joints on such assemblies. Specimens are tested in Double Cantilever Bending (DCB), and a crack is initiated on the glue joint to facilitate the delamination under a quasi-static loading. The objective is to determine the stress intensity factor and the energy release rate, but also to study the propagation of the crack according to the load using a full field measurement technique. Three tropical species with different density, are chosen and glued by pair in order to lower the cost of the Glued Solid Timber (GST) beams. The adhesive used is a Phenol Resorcinol Formaldehyde (PRF) associated with a hardener HRP-155.

Mots clés: Tropical species; Glued Solid Timber; Cracking; Stress intensity factor; Energy release rate

Domaines: Structures; Construction durable; Matériaux; Matériaux composites et construction

Cedric Horphe Ndong Bidzo, Rostand Moutou Pitti, Samuel Ikogou, Kaiser Beat, Claude Feldman Pambou Nziengui, et al.. BONDING PERFORMANCE OF TROPICAL MULTI SPECIES GLUED SOLID TIMBER. World Conference On Timber Engineering, Aug 2021, Santiango, Chile. ⟨hal-03042576⟩