PSI - Issue 81

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ScienceDirect

Procedia Structural Integrity 81 (2026) 493–498

VIII International Conference “In - service Damage of Materials: Diagnostics and Prediction“ (DMDP 2025) Mechanical Performance Enhancement of Structural Wood Modified under Water Exposure Oleksandr Matviiuk a , Sviatoslav Homon a , Petro Gomon a , Svyatoslav Gomon a, *, Nataliia Ilchuk b ,

Sergii Synii b , Olena Krantovska c , Liubov Ksionshkevych c a National University of Water and Environmental Engineering, Soborna 11, 33000 Rivne, Ukraine b Lutsk National Technical University, Lvivska 75, 43018 Lutsk, Ukraine c Odesa State Academy of Civil Engineering and Architecture, Didrihsona 4, 65029 Odesa, Ukraine

© 2026 The Authors. Copy from the contract: Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2025 organizers Keywords: wood, mechanical properties, strength, deformability, water environment, compression. 1. Introduction Wood is an anisotropic material with distinctive physical and mechanical properties (Gong et al. (2019); Datsiuk et al. (2024); Landis et al. (2002); Gomon et al. (2023); Moya and Bano (2017); Patton-Mallory and Cramer (1987)). It is widely used in the manufacture of various products and structural elements (Aleksiievets et al. (2024); Wang et al. (2019); Homon et al. (2025); Ivaniuk et al. (2025)). In many cases, wooden products and structural components operate in aggressive environments characterized by high moisture levels (Fojtik (2019); Janiak et al. (2023); Huang et al. (2006); Thygesen et al. (2010); Antczak et al. (2025)). Very often, wood is used as a load-bearing material in bridge structures, pedestrian bridges, marine piers, and bank protection facilities (Gomon et al. (2022); Mykhailovskyi (2022); Pavluk et al. (2025); Sobczak-Piastka et al. (2023); Gomon et al. (2024)). To improve the physical and mechanical properties of wood under such service conditions, various modification techniques are applied (Yasniy et al. (2022); Horbachova et al. (2023); Homon et al. (2024)). These techniques include different chemical and Abstract Full-scale experimental studies were carried out on unimpregnated and silor-modified specimens of structural spruce and ash wood subjected to single short-term axial compression parallel to the grain under service conditions in water environments with a rigid loading regime. Based on the experimental results, stress-strain diagrams of the tested prisms were constructed, and their main parameters in the pre-critical and post critical stages of behaviour were determined. In particular, the maximum stresses increase by 2.15 – 2.47 times, and the modulus of elasticity increases by 1.70 – 1.99times. At the same time, the relative critical strains decrease by 1.32 – 1.42 times, the ultimate strains by 1.33 – 1.41 times, and the residual strains by 1.26 – 1.39 times compared to untreated wood operated under the same conditions. It was also established that the influence of the water environment on wood modified with the silor polymer composition is practically negligible.

* Corresponding author. Tel.: +38-067-915-86-50; fax: +0-000-000-0000 . E-mail address: slavagomon@ukr.net

2452-3216 © 2026 The Authors. Copy from the contract: Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2025 organizers 10.1016/j.prostr.2026.03.084