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Friday, 25 November 2016

Some physical and mechanical properties of laminated veneer lumber reinforced with carbon fiber using heat-treated beech veneer

Published Date
DOI: 10.1007/s00107-016-1125-z

Cite this article as: 
Percin, O. & Altunok, M. Eur. J. Wood Prod. (2016). doi:10.1007/s00107-016-1125-z


Heat treatment at relatively high temperatures (from 150 to 260 °C) is an effective way to improve dimensional stability and bio durability. However, heat treatments usually reduce most of the mechanical properties of wood. This study was performed to investigate the effect of carbon fiber fabric on some mechanical and physical properties of LVL manufactured from heat-treated and untreated beech (Fagus orientalis Lipsky) wood. The laminated veneer lumber (LVL) and reinforced laminated veneer lumber (RLVL) samples were produced from heat-treated and untreated beech veneers in the five ply form (4 mm each) by using DVTKA adhesive. Prior to the manufacture of LVL and RLVL, veneers were subjected to heat treatment at varying temperatures (160, 190 and 220 °C) for 180 min. Carbon fiber revealed a clear effect on the mechanical (bending strength, modulus of elasticity in bending, compression strength) and physical properties (density, equilibrium moisture content, and volumetric swelling) of heat-treated and control LVL. The results showed that reinforcement with carbon fiber increased the density, the bending strength and modulus of elasticity in bending and the compression strength. Also, the volumetric swelling of reinforced laminated veneer lumber was more favorable than those of laminated veneer lumber.


  1. Aiello MA, Leone M, Aniskevich AN, Starkova OA (2006) Moisture effects on elastic and viscoelastic properties of CFRP rebars and vinylester binder. J Mater Civ Eng 18(5):686–691. doi:10.1061/(ASCE)0899-1561(2006)18:5(686)CrossRefGoogle Scholar
  2. Bal BC (2014a) Some physical and mechanical properties of reinforced laminated veneer lumber. Constr Build Mater 68:120–126CrossRefGoogle Scholar
  3. Bal BC (2014b) Flexural properties, bonding performance and splitting strength of LVL reinforced with woven glass fiber. Constr Build Mater 51:9–14CrossRefGoogle Scholar
  4. Bal BC, Bektas I (2013) The effects of heat treatment on some mechanical properties of juvenile wood and mature wood of Eucalyptus grandis. Dry Technol 31(4):479–488CrossRefGoogle Scholar
  5. Bekhta P, Niemz P (2003) Effect of high temperature on the change in color, dimensional stability and mechanical properties of spruce wood. Holzforschung 57(5):539–546CrossRefGoogle Scholar
  6. Boonstra MJ, Tjeerdsma B (2006) Chemical analysis of heat-treated softwoods. Holz Roh Werkst 64(3):204–211CrossRefGoogle Scholar
  7. Boonstra MJ, Van Acker J, Tjeerdsma BF, Kegel EV (2007) Strength properties of thermally modified softwoods and its relation to polymeric structural wood constituents. Ann For Sci 64(7):679–690CrossRefGoogle Scholar
  8. Brazier JD, Howell RS (1979) The use of a breast-height core for estimating selected whole-tree properties of Sitka spruce. Forestry 52(2):177–185Google Scholar
  9. Burdurlu E, Kılıc M, Ilce AC, Uzunkavak O (2007) The effects of ply organization and direction on bending strength and modulus of elasticity in laminated veneer lumber (LVL) obtained from beech (Fagus orientalis L.) and lombardy poplar (Populus nigra L.). Constr Build Mater 21(8):1720–1725CrossRefGoogle Scholar
  10. Choi HS, Ahn KJ, Nam JD, Chun HJ (2001) Hygroscopic aspects of epoxy/carbon fiber composite laminates in aircraft environments. Compos Part A Appl Sci Manuf 32(5):709–720CrossRefGoogle Scholar
  11. De Lorenzis L, Scialpi V, La Tegola A (2005) Analytical and experimental study on bonded-in CFRP bars in glulam timber. Compos Part B Eng 36(4):279–289CrossRefGoogle Scholar
  12. Dost Kimya (2016) Description text and catalog. Istanbul, Turkey
  13. Dubey MK, Pang S, Walker J (2011) Effect of oil heating age on colour and dimensional stability of heat treated Pinus radiat. Eur J Wood Prod 69(2):255–262CrossRefGoogle Scholar
  14. Edvardsen K, Sandland KM (1999) Increased drying temperature—its influence on the dimensional stability of wood. Holz Roh Werkst 57(3):207–209CrossRefGoogle Scholar
  15. Esteves BM, Pereira HM (2009) Wood modification of heat treatment: a review. BioResources 4(1):370–404Google Scholar
  16. Fiorelli J, Dias AA (2006) Fiberglass-reinforced glulam beams: mechanical properties and theoretical model. Mater Res 9(3):263–269CrossRefGoogle Scholar
  17. Gaff M, Gašparík M (2015) Influence of densification on bending strength of laminated beech wood. BioResources 10(1):1506–1518CrossRefGoogle Scholar
  18. Gunduz G, Niemz P, Aydemir D (2008) Changes in specific gravity and equilibrium moisture content in heat-treated fir (Abies nordmanniana subsp. Bornmülleriana Mattf.) wood. Dry Technol 26(9):1135–1139CrossRefGoogle Scholar
  19. Gunduz G, Korkut S, Aydemir D, Bekar I (2009) The density, compression strength and surface hardness of heat treated hornbeam (carpinus betulus) wood. Maderas Cienc y Tecnol 11(1):61–70Google Scholar
  20. Huang X (2009) Fabrication and properties of carbon fibers. Materials 2(4):2369–2403CrossRefGoogle Scholar
  21. Kamala BS, Kuman P, Rao RV, Sharman SN (1999) Performance test of laminated veneer lumber (LVL) from rubber wood for different physical and mechanical properties. Holz Roh Werkst 57(2):114–116CrossRefGoogle Scholar
  22. Kamdem DP, Pizzi A, Jermannaud A (2002) Durability of heat-treated wood. Holz Roh Werkst 60(1):1–6CrossRefGoogle Scholar
  23. Kaygın B, Gunduz G, Aydemir D (2009) Some physical properties of heat treated Paulownia (Paulownia elongate) wood. Dry Technol 27(1):89–93CrossRefGoogle Scholar
  24. Keskin H, Atar M, Akyildiz MH (2009) Bonding strengths of poly (vinyl acetate), Desmodur-VTKA, phenol-formaldehyde and urea-formaldehyde adhesives in wood materials impregnated with Vacsol Azure. Mater Des 30(9):3789–3794CrossRefGoogle Scholar
  25. Kim YJ, Harries KA (2010) Modeling of timber beams strengthened with various CFRP composites. Eng Struct 32(10):3225–3234CrossRefGoogle Scholar
  26. Kocaefe D, Poncsak S, Boluk Y (2008) Effect of thermal treatment on the chemical composition and mechanical properties of birch and aspen. BioResources 3(2):517–537Google Scholar
  27. Korkut DS, Guller B (2008) The effects of heat treatment on physical properties and surface roughness of red-bud maple (Acer trautvetteri Medw.) wood. Bioresour Technol 99(8):2846–2851CrossRefPubMedGoogle Scholar
  28. Korkut S, Akgul M, Dundar T (2008) The effects of heat treatment on some technological properties of Scots pine (Pinus sylvestris L.) wood. Bioresour Technol 99(6):1861–1868CrossRefPubMedGoogle Scholar
  29. Kozey VV, Jiang H, Mehta VR, Kumar S (1995) Compressive behaviour of materials, Part II, high performance fibers. J Mater Res 10(4):1044–1061CrossRefGoogle Scholar
  30. Kubojima Y, Okano T, Ohta M (2000) Bending strength and toughness of heat-treated wood. J Wood Sci 46(1):8–15CrossRefGoogle Scholar
  31. Kumar IP, Mohite PM, Kamle S (2013) Axial compressive strength testing of single carbon fibres. Arch Mech 65(1):27–43Google Scholar
  32. Li YF, Xiao YM, Tsai MJ (2009) Enhancement of the flexural performance of retrofitted wood beams using CFRP composite sheets. Constr Build Mater 23(1):411–422CrossRefGoogle Scholar
  33. Marouani S, Curtil L, Hamelin P (2012) Ageing of carbon/epoxy and carbon/vinylester composites used in the reinforcement and/or the repair of civil engineering structures. Compos B Eng 43(4):2020–2030CrossRefGoogle Scholar
  34. Melo RR, Menezzi CHS (2014) Influence of veneer thickness on the properties of LVL from Paricá (Schizolobium amazonicum) plantation trees. Eur J Wood Prod 72(2):191–198CrossRefGoogle Scholar
  35. Missanjo E, Matsumura J (2016) Wood density and mechanical properties of Pinus kesiyaRoyle ex Gordon in Malawi. Forests 7(7):135CrossRefGoogle Scholar
  36. Navi P, Girardet F (2005) Effects of thermo-hydro-mechanical treatment on the structure and properties of wood. Holzforschung 54(3):287–293Google Scholar
  37. Poncsák S, Kocaefe D, Bouazara M, Pichette A (2006) Effect of high temperature treatment on the mechanical properties of birch (Betula papyrifera). Wood Sci Technol 40(8):647–663CrossRefGoogle Scholar
  38. Salman SD, Sharba MJ, Leman Z, Sultan MTH, Ishak MR, Cardona F (2016) Tension-compression fatigue behavior of plain woven kenaf/kevlar hybrid composites. BioResources 11(2):3573–3586CrossRefGoogle Scholar
  39. Santos JA (2000) Mechanical behaviour of Eucalyptus wood modified by heat. Wood Sci Technol 34(1):39–43CrossRefGoogle Scholar
  40. Shi JL, Kocaefe D, Zhang J (2007) Mechanical behaviour of Québec wood species heat-treated using ThermoWood process. Holz Roh Werkst 65(4):255–259CrossRefGoogle Scholar
  41. Shukla SR, Kamdem DP (2009) Properties of laboratory made yellow poplar (Liriodendron tulipifera) laminated veneer lumber: effect of the adhesives. Eur J Wood Prod 67(4):397–405Google Scholar
  42. Souza F, Menezzi CHS, Bortoletto Júnıor G (2011) Material properties and nondestructive evaluation of laminated veneer lumber (LVL) made from Pinus oocarpa and P. kesiya. Eur J Wood Prod 69(2):183–192CrossRefGoogle Scholar
  43. Srinivas K, Pandey KK (2012) Effect of heat treatment on color changes, dimensional stability, and mechanical properties of wood. J Wood Chem Technol 32(4):304–316CrossRefGoogle Scholar
  44. Tankut N, Tankut AN, Zor M (2014) Mechanical properties of heat-treated wooden material utilized in the construction of outdoor sitting furniture. Turk J Agric For 38(1):148–158CrossRefGoogle Scholar
  45. Togay A, Erdin E (2014) Determination of some physical attributes for wooden construction elements strengthened with woven wire fiberglass. BioResources 9(3):3883–3900CrossRefGoogle Scholar
  46. TS 2471 (1976) Wood-determination of moisture content for physical and mechanical tests. Turkish Standard Institution, AnkaraGoogle Scholar
  47. TS 2472 (1976) Wood-determination of density for physical and mechanical tests. Turkish Standard Institution, AnkaraGoogle Scholar
  48. TS 2474 (1976) Wood-determination of ultimate strength in static bending. Turkish Standard Institution, AnkaraGoogle Scholar
  49. TS 2478 (1976) Wood-determination of modulus of elasticity in static bending. Turkish Standard Institution, AnkaraGoogle Scholar
  50. TS 2595 (1977) Wood-determination of ultimate stress ın compression parallel to grain. Turkish Standard Institute, AnkaraGoogle Scholar
  51. TS 4086 (1983) Wood-determination of volumetric swelling. Turkish Standard Institute, AnkaraGoogle Scholar
  52. TS EN 386 (2006) Glued laminated timber-performance requirements and minimum production requirements. Turkish Standard Institution, AnkaraGoogle Scholar
  53. Unsal O, Ayrilmis N (2005) Variations in compression strength and surface roughness of heat-treated Turkish river red gum (Eucalyptus camaldulensis) wood. J Wood Sci 51(4):405–409CrossRefGoogle Scholar
  54. Wang BJ, Chui YH (2012) Performance evaluation of phenol formaldehyde resin impregnated veneers and laminated veneer lumber. Wood Fiber Sci 44(1):5–13Google Scholar
  55. Wang BJ, Dai C (2005) Hot-pressing stress graded aspen veneer for laminated veneer lumber (LVL). Holzforschung 59(1):10–17CrossRefGoogle Scholar
  56. Wang J, Guo X, Zhong W, Wang H, Cao O (2015) Evaluation of mechanical properties of reinforced poplar laminated veneer lumber. BioResources 10(4):7455–7465Google Scholar
  57. Wei P, Wang BJ, 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):4883–4898CrossRefGoogle Scholar
  58. Xu H, Nakao T, Tanaka C, Yoshinobu M, Katayama H (1998) Effects of fiber length and orientation on elasticity of fiber-reinforced plywood. J Wood Sci 44(5):343–347CrossRefGoogle Scholar
  59. Yosoyima R, Morimoto K, Suzuki T (1984) The reaction of glass fiber with diisocyanate and its application. J Appl Polym Sci 29(2):671–679CrossRefGoogle Scholar

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