Analysis of the structural parameters of engineered wood
DOI: https://doi.org/10.3846/mla.2025.24064Abstract
This study hypothesises that the tensile strength of wood-duroplastic composites (WDPC) is influenced by wood waste particle size and shape. The research investigated whether variations in the structural composition of wood waste particles have a significant impact on the properties of composite materials. The analysis of the three types of wood waste—door production, packaging, and demolition waste—was conducted following mechanical and chemical treatment. The characterisation of particles was conducted through granulometric analysis and morphological evaluation using ImageJ software. Composite samples were then developed using biopolyurethane binders. Tensile strength tests were conducted after 30 days of curing. The findings of the present study indicated that the morphology of the particles, especially their aspect ratio and circularity, had a significant impact on the strength of the composite materials. Despite their comparatively greater density, attributable to their aluminium content, samples of door waste did not demonstrate superior tensile strength. The present study makes a contribution to the field of sustainable waste reuse strategies and presents practical insights into the development of engineered wood products.
Article in English.
Dirbtinės medienos struktūrinių parametrų analizė
Santrauka
Šio tyrimo hipotezė teigia, kad medienos duroplastiko (WDPC) kompozitų tempiamasis stipris priklauso nuo medienos atliekų dalelių dydžio ir formos. Tyrime buvo nagrinėjama, ar skirtinga medienos atliekų dalelių struktūrinė sudėtis veikia kompozitinių medžiagų savybes. Buvo tiriamos trijų tipų medienos atliekos – durų gamybos, pakavimo pramonės bei baldų ir statybos pramonės atliekos – analizę atliekant po mechaninio ir termocheminio atliekų apdorojimo. Dalelėms charakterizuoti buvo nustatinėjama granuliometrinė sudėtis bei kiekvienos rūšies ir frakcijos medienos atliekų dalelių forma, vertinimui naudojant ImageJ programinę įrangą. Atlikus medienos atliekų dalelių analizę, naudojant biopoliuretaninį rišiklį, suformuoti kompozitinės medžiagos bandiniai. Bandiniai 30 dienų buvo kietinami ir vėliau atlikti bandymai nustatant tempiamąjį stiprį. Nustatytas reikšmingas ryšys tarp kompozitą sudarančių dalelių morfologinių parametrų, ypač AR (aspect ratio), apskritumo ir stipruminių savybių. Nepaisant to, kad bandiniai iš durų gamybos atliekų turėjo didesnį tankį dėl sudėtyje buvusių aliuminio dalelių, tempiamojo stiprio rezultatai reikšmingai nesiskyrė. Šis tyrimas prisideda prie tvaraus atliekų naudojimo strategijų kūrimo, taip pat jame pateikiamos praktinės įžvalgos, susijusios su dirbtinės medienos gaminių kūrimu.
Reikšminiai žodžiai: medienos atliekos, medienos duroplastiko kompozitas, tempiamasis stipris, dalelių morfologija, cheminis apdorojimas, biopoliuretanas, tvarumas, granuliometrija, atliekų perdirbimas, žiedinė ekonomika.
Keywords:
wood waste, wood-duroplastic composites, tensile strength, particle morphology, chemical treatment, biopolyurethane, sustainability, granulometry, recycling, circularityHow to Cite
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Copyright (c) 2025 The Author(s). Published by Vilnius Gediminas Technical University.
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Copyright (c) 2025 The Author(s). Published by Vilnius Gediminas Technical University.
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