Abstract
Original scientific paper Research of bamboo-wood composites compression performance provides a basis for material selections for prestressed glued bamboo-wood beams and other components whose compression is mainly shared by glued bamboo-wooden composites. Four kinds of wood and two kinds of bamboo were selected to comprise 22 groups (6 specimens each group) divided into 4 batches to study the influence factors on bamboo/wooden material type; factors such as composition pattern, layer plate thickness, and lamina lay-ups type. Compressive strength, elasticity modulus, ductility, and failure mechanisms were all compared and analysed. Results showed that failure modes were mainly oblique shear failure, laminates bending failure, laminates tackless failure, while the end local pressure and overall bending failure occured less frequently. Compressive strength of bamboo was 1,5 ÷ 2 times higher than that of wood. Elastic modulus of the two was similar, which makes them commonly used in foundations. After being compounded, compressive strength improved. After being combined with glued bamboo, it increased by 1,26 ÷ 32,05 %, and it increased by 0,80 ÷ 45,86 % with reconsolidated bamboo. Bamboo-wood composites have high strength and good ductility, which can meet engineering requirements.
Highlights
The bamboo-wood composite is the compound panel or square timber combined or glued by bamboo and wood in the same or different structural unit forms
The research of glued bamboo-wood composites compression performance tests provided a basis for the material selections of prestressed glued bamboo-wood beams and other components whose compression is mainly shared by glued bamboo-wood composites, and laid a foundation for the promotion of the Tehnički vjesnik 23, 1(2016), 129-135 excellent performance, economic benefits, applicability to higher-value products, which is of important theoretical value and engineering significance [7, 8]
The parallel to the grain compression performance of bamboo-wood composites was tested, which provided a basis for the material selections for prestressed glued bamboo-wooden beams and other components whose compression was
Summary
The bamboo-wood composite is the compound panel or square timber combined or glued by bamboo and wood in the same or different structural unit forms It can diffuse or completely eliminate some defects of bamboo and wood as separate components, and improve the materials strength and solve the bamboo problems of having small grade diameters, low outturn percentage, and processing difficulty. The parallel to the grain compression performance of bamboo-wood composites was tested, which provided a basis for the material selections for prestressed glued bamboo-wooden beams and other components whose compression was. Considering the influence factors of material type, composition pattern and layer plate thickness and lamina lay-ups type, the elasticity modulus, compressive strength, ductility, failure mechanism, deformation compatibility between bamboo and wood on bamboowood composites parallel to the grain were studied, and a basis of material selection for prestressed glued bamboowood beams and other components whose compression was mainly shared by glued bamboo-wood composites was provided. S – SPF; E – eucalyptus; P – poplar; N – northeast larch; G – glued bamboo; R – reconsolidated bamboo; I – interval; U – unilateral; B – bilateral
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