Feasibility of using Uruguayan Eucalyptus for sustainable timber connections

Simple item page
dc.contributor.authorPassarella, Diego
dc.contributor.authorBruzzone, Gastón
dc.contributor.authorQuagliotti, Sebastián
dc.contributor.authorMoya, Laura
dc.date.accessioned2024-08-29T22:10:31Z
dc.date.available2024-08-29T22:10:31Z
dc.date.issued2023
dc.descriptionPonencia presentada a: International Union of Forest Research Organizations (IUFRO) Conference, Montevideo, 20-24 de noviembre de 2023.
dc.description.abstractUruguayan fast-growing Eucalyptus grandis has emerged as a promising sustainable material for structural building components. However, traditional methods for joining timber components, such as beams and columns, typically rely on metallic fasteners, and mass timber products like glued laminated timber often use adhesives. In response to growing environmental concerns over the past five years, researchers have explored the substitution of petroleum-based adhesives and metallic fasteners with wooden pegs or dowels. To create effective connections, these dowels must be fashioned from denser wood than the lamellae. The embedment strength of both woods with varying densities is a critical factor in the design of timber connections using fasteners. This paper presents the results of a structural performance analysis of fully eucalyptus dowelled connections, constructed by combining Eucalyptus grandis (? = 473.2 kg|m3, COV = 13.2 %) for the lamellae and Eucalyptus tereticornis (? = 1042.4 kg|m^3, COV = 3.2 %) for the dowel. The bending strength of dowels was determined for specimens with 15- and 18-mm diameters, yielding 173.0 MPa (COV = 10.7 %) and 184.0 MPa (COV = 8.3 %), respectively. Four series of connections were tested, varying the fiber orientation of the lamellae (longitudinal L, transversal T) and dowel diameter (15, 18), following the half-hole method described in ASTM D 5764 standard. The embedment strength values obtained for the connections are as follows: L-15 = 31.3 MPa (COV = 9.3 %), T-15 = 11.2 MPa (COV = 28.7 %), L-18 = 29.6 MPa (COV = 10.1 %), T-18 = 16.7 MPa (COV = 25.7 %). These results reveal that the longitudinal application of the load, aligned with the fiber orientation, exhibits approximately twice the strength of the transversal orientation, with less variability in the outcomes. Furthermore, a strong correlation with the lamellae density was observed, while no significant dependency on the dowel diameter was found. These findings represent a crucial initial step in characterizing and designing glue-free wood-wood connections. The utilization of different eucalyptus species presents a promising path for the development of connections that promote more sustainable timber construction systems.
dc.description.sponsorshipANII - FMV_1_2019_1_156162
dc.identifier.citationPassarella, D., Bruzzone, G., Quagliotti, S., & Moya, L. (2023). Feasibility of using Uruguayan Eucalyptus for sustainable timber connections. Agrociencia Uruguay, 27(NE2). Doi: 10.31285/AGRO.27.1312.
dc.identifier.doi https://doi.org/10.31285/AGRO.27.1312
dc.identifier.issn2730-5066
dc.identifier.urihttps://hdl.handle.net/20.500.11968/7042
dc.languageeng
dc.publisherAgronomy College (FAgro), Universidad de la República (Udelar)
dc.publisherNational Institute of Agricultural Research (INIA)
dc.rights.levelAcceso abierto
dc.rights.licenseCreative Commons Attribution 4.0 International License
dc.source.noNE2
dc.source.titleAgrociencia Uruguay
dc.source.vol27
dc.subjectESTRUCTURAS DE MADERA
dc.subjectCONECTORES PARA MADERA
dc.subjectMADERA
dc.subjectCONSTRUCCIÓN EN MADERA
dc.titleFeasibility of using Uruguayan Eucalyptus for sustainable timber connections
dc.typeArtículo
dc.type.versionVersión publicada
Files
Collections
Publicaciones de proyectos