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Title: UNSTEADY STATE THERMAL ANALYSIS OF GLULAMINATED TIMBER ELEMENTS SUBJECTED TO FIRE
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UNSTEADY STATE THERMAL ANALYSIS OF GLULAMINATED TIMBER ELEMENTS SUBJECTED TO FIRE
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10.5593/sgem2024/6.1
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1314-2704
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English
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24
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6.1
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA |
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The paper presents the procedures of introducing the unsteady state numerical analysis domain for simulating the mechanical behavior of glue laminated timber (glulam) elements when subjected to high temperatures. For any analysis applied to characterize the fire resistance of wood, glue laminated timber implicitly, the unsteady state numerical analysis domain must be applied, considering the heat propagation, humidity percentage loss and the overall change of the mechanical characteristics of the components through a phenomenon that can be simulated as phase transformation. Behavior of glued laminated timber when subjected to fire is equally influenced by the behavior of adhesives in the cross section composition together with the wood lamellas. Even the focus of fire resistance analysis was on the characteristics and properties of wood, the type of adhesive is of great importance also. The current adhesives used, like phenolic or aminoplastic offer good mechanical properties and satisfactory results in terms of strength, durability or fire resistance, for which provisions and details are already included in standards. The paper studies the delamination when structural element is subjected to high temperatures with discussion if localized effects relate to sectional behavior.
This paper is based on the background offered by a research project aiming to develop a testing system for the mechanical behavior of some new configurations of glulam composite materials (comprising different wood essences and adhesives) when subjected to high temperatures. The need for this type of analysis is becoming more topical due to the trend of replacing with bio-renewable materials (wood) structural elements from materials whose production is energy-intensive (especially steel and cement) within the framework of the European policy "Green New Deal" to reduce greenhouse gas emissions, of which the construction industry is responsible for approximately 40-50%. |
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conference
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Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024
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24th International Multidisciplinary Scientific GeoConference SGEM 2024, 1 - 7 July, 2024
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
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333-340
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1 - 7 July, 2024
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website
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9815
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glulam, adhesive, fire resistance, flash-over, delamination
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