Research on the enhanced composite mode of low temprature solidified glued laminated timber

Zhong F. Zhang, Kai Huang, Xia

Abstract

Selecting appropriate reinforcing materials and composite models are the keys to apply the plantation wood widely in the field of building engineering. The process of low temperature solidification was applied and the basic mechanical properties were viewed as the evaluation index to explore the enhanced manner and composite mode of glued laminated timber made up of the plantation eucalyptus veneers with the reinforced materials of glass fiber cloth, aluminium foil and copper foil. The results show that the influence of reinforcing material type on Modulus of Rupture (MOR) and standard Modulus of Elasticity (MOE) is significant and the influence of reinforcing material layer number and assemble pattern on standard MOR and MOE is more significant than which on MOR and standard MOE, and the glass fiber cloth combined with the aluminum foil as the reinforcing materials and the aluminum foil placed on the outermost surface of glued laminated timber is the best assemble pattern to make the glued laminated timber, and the limit load and safety factor of the glued laminated timber can be increased by the thickness of veneers and the parallel assemble structure of veneers is superior to its cross assemble structure. Finally, the fitting curve equations were obtained in our experimental condition to clarify the relationship of the thickness of glued laminated timber , the limit load and the standard MOR, and the goodness of fit was 0.891 and 0.852, respectively. It will promote the plantation wood rationally to be applied in the field of building engineering

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