20.500.12556/RUL-167976 Advanced evaluation of fire resistance in spruce wood (Picea abies spp.) treated with innovative surface coatings This study investigates innovative surface coatings’ effectiveness in enhancing spruce wood’s fire resistance (Picea abies spp.). Spruce wood samples were treated with various agents, including oils, waxes, boric acid, commercial coatings, and fire-retardant agents. The evaluation was conducted using the small flame method (EN ISO 11925-2:2020), surface roughness analysis, hyperspectral imaging (HSI), and contact angle measurements. The results demonstrated significant improvements in fire resistance for samples treated with specific coatings, particularly the Burn Block spray and Caparol coating, which effectively prevented flame spread. The analysis revealed that the Burn Block spray reduced the average flame height to 6.57 cm, while the Caparol coating achieved a similar effect with an average flame height of 6.95 cm. In contrast, untreated samples exhibited a flame height of 9.34 cm, with boric acid-treated samples reaching up to 12.18 cm. Char depth measurements and the surface roughness analysis revealed a clear correlation between the type of treatment and the thermal stability of the wood. Hyperspectral imaging enabled a detailed visualisation of surface degradation, while contact angle measurements highlighted the impact of hydrophobicity on flammability. This research provides in-depth insights into the fire-retardant mechanisms of spruce wood and offers practical guidelines for developing safer and more sustainable wood materials for the construction industry. fire resistance spruce wood surface roughness hyperspectral imaging contact angle flame spread fire-retardant treatments požarna odpornost smrekov les hrapavost površine hiperspektralno oslikovanje kontaktni kot širjenje plamena protipožarna obdelava true false true Angleški jezik Slovenski jezik Članek v reviji 2025-03-21 13:14:49 2025-03-21 13:14:54 2025-03-22 04:08:20 0000-00-00 00:00:00 2025 0 0 Str. 1-15 iss. 4, [article no.] 120 Vol. 8 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2025-01-01 630*8 2571-6255 229838339 RAZ_Hasanagic_Redzo_2025.pdf RAZ_Hasanagic_Redzo_2025.pdf 1 FC728494E4B389C091620683DD8D0D9D cd099bf31c65c0c8bb8b83717872f5ddd9a031567580286b5ebb68c73eca6ca9 2fd5c58b-064e-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=200944 https://www.mdpi.com/2571-6255/8/4/120 1 15415abe-064d-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=200942 Biotehniška fakulteta 0 0 0