EVALUATION OF THE MECHANICAL PROPERTIES OF POPLAR LAMINATED VENEER LUMBER (LVL) REINFORCED WITH OAK, BEECH, AND EUCALYPTUS VENEERS
Keywords:
LVL; Poplar veneer; Reinforcement; SCL.Abstract
Structural composite lumber is produced from various tree species, and numerous laboratory studies have examined its mechanical properties. In this study, LVL boards were produced using poplar, oak, beech, and eucalyptus veneers in the outer layers and poplar veneers in the middle layers. Melamine-urea-formaldehyde adhesive was used in the production of the boards. The modulus of rupture, modulus of elasticity, splitting strength, compression strength perpendicular to the grain, hardness, and screw holding capacity of the produced boards were determined. According to the obtained data, test specimens with oak, beech, and eucalyptus as outer layers had higher mechanical properties than the control group. Furthermore, the modulus of rupture and modulus of elasticity of LVL boards with oak on the top and bottom surfaces were 50% and 99% greater than those of the control group, respectively. However, no significant increase in splitting strength was found.
References
Ayata, Ü., Bal, B.C., 2019. Sapsız meşe (Quercus petreae l.) odununda statik sertlik tayini ve yüzey pürüzlülüğü parametreleri, ınternatıonal conference on agriculture and rural development-II, Proocedings book P: 22-28, September 27-29, 2019, Kiev, Ukraine.
Bal, B. C., Bektaş, İ., 2012. The effects of wood species, load direction, and adhesives on bending properties of laminated veneer lumber. BioResources, 7(3), 3104-3112.
Bal, B.C., 2014. Flexural properties, bonding performance and splitting strength of LVL reinforced with woven glass fiber, Construction and Building Materials, 51, 9-14.
Bal, B. C., Bektaş, İ., Mengeloğlu, F., Karakuş, K., Demir, H. Ö., 2015. Some technological properties of poplar plywood panels reinforced with glass fiber fabric. Construction and Building Materials, 101, 952-957.
Bal, B. C., 2021. Research on some mechanical properties of laminated veneer lumber (LVL) strengthened with glass fiber net. Furniture and Wooden Material Research Journal, 4(2), 174-182. https://doi.org/doi:10.33725/mamad.1014198
Bao, F., Fu, F., Choong, E.T., Hse, C., 2001. Contribution factor of wood properties of three poplar clones to strength of laminated veneer lumber. Wood Fiber Sci. 33 (3), 345-352.
Çolak, S., Çolakoğlu, G., Aydin, I., 2007. Effects of logs steaming, veneer drying and aging on the mechanical properties of laminated veneer lumber (LVL). Building and Environment, 42(1), 93-98.
De Melo, R. R., Del, Menezzi, C.H.S., 2014. Influence of veneer thickness on the properties of LVL from Paricá (Schizolobium amazonicum) plantation trees. European journal of wood and wood products, 72(2), 191-198.
De Melo, R.R., Del Menezzi, C.H.S., 2015. Influence of adhesive type on the properties of LVL made from Paricá (Schizolobium amazonicum Huber ex. Ducke) plantation trees. Drvna industrija, 66(3), 205-212.
Erdil, Y.Z., Kasal, A., Zhang, J., Efe, H., Dizel, T., 2009. Comparison mechanical properties of solid wood and laminated veneer lumber fabricated from Turkish beech, Scots pine, and Lombardy poplar, Forest Product Journal, 59(6), 55-60.
Hashim, R., Sarmin, S. N., Sulaiman, O., Yusof, L. H. M., 2011. Effects of cold setting adhesives on properties of laminated veneer lumber from oil palm trunks in comparison with rubberwood. European Journal of Wood and Wood Products, 69(1), 53-61.
H’ng, P.S., Paridah, M.T., Chin, K.L., 2010. Bending properties of laminated veneer lumber produced from Keruing (Dipterocarpus sp.) reinforced with low density wood species. Asian Journal of Scientific Research, 3(2), 118-125.
Kurt, R., Cil, M., Aslan, K., Cavus, V., 2011. Effect of pressure duration on physical, mechanical, and combustibility characteristics of laminated veneer lumber (LVL) made with hybrid poplar clones. BioResources 6(4), 4886-4894.
Kurt, R., Cil, M., 2012. Effects of press pressures on glue line thickness and properties of laminated veneer lumber glued with phenol formaldehyde adhesive. BioResources. 7(4), 5346-5354.
Larson, D.S., Sandberg, L.B., Laufenberg, T.L., Krueger, G.P., Rowlands, R.E., 1987. Butt joint reinforcement in parallel-laminated veneer (PLV) lumber. Wood and fiber science, 414-429.
Nelson, S. 1997. Structural composite lumber. Engineered wood products: A guide for specifiers, designers, and users, 174-152.
Opazo-Vega, A., Jara-Cisterna, A., Benedetti, F., Nuñez-Decap, M., 2025. Estimation of the orthotropic elastic properties of reinforced LVL panels through vibration-based model updating techniques. Wood Science and Technology, 59(2), 26.
Perçin, O., 2023. Determination of air-dried density and compression strength parallel to the grains of heat-treated laminated veneer lumber (LVL) reinforced with carbon fiber. Furniture and Wooden Material Research Journal, 6(1), 104-114. https://doi.org/doi: 10.33725/mamad.1268729
Perçin, O., 2025. Performance properties of heat treated and reinforced laminated veneer lumber with glass fiber. Furniture and Wooden Material Research Journal, 8(1), 156-171. https://doi.org/doi:10.33725/mamad.1699980
Sokolović, N. M., Gavrilović-Grmuša, I., Zdravković, V., Ivanović-Šekularac, J., Pavićević, D., Šekularac, N., 2023. Flexural Properties in Edgewise Bending of LVL Reinforced with Woven Carbon Fibers. Materials, 16(9), 3346.
Sulastiningsih, I. M., Trisatya, D. R., Balfas, J., 2020. Some properties of laminated veneer lumber manufactured from oil palm trunk. In IOP Conference Series: Materials Science and Engineering 935(1), 1, p. 012019. IOP Publishing.
URL 1 2025, Metsä Wood, https://www.metsagroup.com, (Last Access: 07.09.2025)
Vaňová, R., Štefko, J., 2021. Assessment of selected types of the structural engineered wood production from the environmental point of view. Acta Facultatis Xylologiae Zvolen, 63(2), 117-130.
Wei, P., Wang, B. J., Zhou, D., Dai, C., Wang, Q., Huang, S., 2013. Mechanical Properties of Poplar Laminated Veneer Lumber Modified by Carbon Fiber Reinforced Polymer. BioResources, 8(4).
Wang, J., Guo, X., Zhong, W., Wang, H., Cao, P., 2015. Evaluation of mechanical properties of reinforced poplar laminated veneer lumber. BioResources, 10(4), 7455-7465.
Wong. E.D., Razali, A.K., Kawai. S., 1996. Properties of rubber wood LVL reinforced with acacia veneers. Wood research: Bulletin of the Wood Research Institute, Kyoto Un, 1996; 83:8-16.
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