20.500.12556/RUP-22214 Experimental and analytical evaluation of shear capacity of reclaimed timber connections with thermo-mechanically densified wooden dowels The reuse of reclaimed timber in structural applications is increasingly recognized as a strategy to extend ma- terial life cycles and reduce waste. Particular attention has recently turned to reusing reclaimed timber in adhesive-free laminated products with wooden dowels, where connection performance is critical. The aim of this study was to investigate the mechanical performance of double-shear connections assembled from reclaimed spruce timber using thermo-mechanically densified wooden dowels. The dowels were first evaluated in bending and embedment tests on lamellae made from both reclaimed and virgin spruce timber. The shear capacity of the connections was then evaluated in three layups: two homogeneous (all-reclaimed lamellae and all-virgin spruce lamellae) and one hybrid (reclaimed side lamellae with a central virgin spruce lamella). Analytical predictions were performed based on the draft of the new Eurocode 5, however, with two alternative definitions of dowel bending resistance (ultimate moment Mu and yield moment My), and three alternative definitions of embedment strength (f 0.05d h calculated using the 0.05 d offset method, f Fmax h calculated from Fmax, and f 0.8Fmax h calculated from 0.8 Fmax). The three lamellae layups exhibited relatively similar mean capacities (7.3–8.3 kN). The all-reclaimed connections were on average 13 % stronger than the other assemblies, but this was not statistically significant. Among the model input variants, Mu with f 0.05d h showed the closest agreement with the experimental mean values, while My with f 0.05d h led to more conservative predictions preferable for design. In both cases, excluding outliers from the embedment test results reduced overestimation in the predictions. All other input variants overestimated the shear capacity. Overall, both homogeneous and hybrid connections with reclaimed timber lamellae performed comparably to virgin timber connections and exhibited predictable mechanical behavior. reclaimed timber wood densification structural reuse embedment strength dowel connections European yield model Eurocode 5 obnovljen les zgostitev lesa konstrukcijska ponovna uporaba vgrezna trdnost mozniški spoji evropski model plastičnega tečenja true false true Angleški jezik Slovenski jezik Članek v reviji 2025-12-17 08:21:47 2025-12-17 08:21:51 2025-12-20 03:03:39 0000-00-00 00:00:00 2025 0 0 str. 1-19 atricle 144613 Vol. 504 Dec. 2025 0000-00-00 Zaloznikova NiDoloceno NiDoloceno 0000-00-00 0000-00-00 2025-11-26 674 0950-0618 10.1016/j.conbuildmat.2025.144613 261766915 RAZ_Derikvand_Mohammad_2025.pdf RAZ_Derikvand_Mohammad_2025.pdf 1 D1E03D3327C77816EE66A2BA974727EE ffe370a659c76eb5bcd7aa38c93c07172383b93f5c86cb9bcd92fa846090d0e9 9b1add6d-db19-11f0-8f0b-005056ac49c0 https://repozitorij.upr.si/Dokument.php?lang=slv&id=32252 https://www.sciencedirect.com/science/article/pii/S0950061825047658 1 5d2921a4-db19-11f0-8f0b-005056ac49c0 https://repozitorij.upr.si/Dokument.php?lang=slv&id=32251 Inštitut Andrej Marušič 0 0 0