Abstract
The large-scale abundance of wood in Brazil combined with the advantages of its use stimulate many studies to be encouraged in order to make use of this raw material in a more optimized and adequate form. Compared with concrete and steel, wood presents an excellent relation between mechanical strength and its mass, beauty, low energy consumption for its processing, good thermal insulation and easy workability. Objectifying the best use of wood, this work proposes that the equivalence between longitudinal and transversal modulus of elasticity values with radial (ELR; GLT) and tangential load application (ELT; GLR) in the 3 and 4-point bending tests used for their determinations. The test of equivalence used in the analysis of the results for the modulus of elasticity was the Tukey’s test, by which the statistical equivalence between values of longitudinal (ELR x ELT) and transversal (GLT x GLR) modulus of elasticity with the radial and tangential load application, respectively. It was concluded that for the species of the hardwood group: Peroba Rosa (Aspidosperma polyneuron) with 35 specimens, Eucalyptus Tereticornis (Eucalyptus tereticornis) with 33 specimens, Jatoba (Hymenaea courbaril) with 28 specimens and Canafistula Peltophorum dubium) with 12 test specimens, tested in this work, there was no significant influence of the direction change of the loads on the values of the calculated modulus of elasticity.
Highlights
Wood was always one of the materials of civil construction most used by the human being
In relation to other materials such as concrete, plastic, steel and aluminum, wood has a number of advantages, such as beauty, high mechanical resistance to mass, low energy consumption for its processing, good thermal insulation, easy workability [5]
Three-point and four-point flexural tests were carried out to determine the values of the longitudinal modulus of elasticity with load application in the radial (ELR), tangential longitudinal (ELT) and transversal elastic modulus with load application in the tests in the radial (GLT) and tangential (GLR) longitudinal directions, remembering that ELR is referring to GLT and ELT referring to GLR, since G is always orthogonal to E
Summary
Wood was always one of the materials of civil construction most used by the human being. Wood presents environmental advantages when compared to other building materials (cement, concrete, steel and aluminum), because it is recyclable, renewable, biodegradable and requires low energy needs for its processing [1,2,3,4]. In relation to other materials such as concrete, plastic, steel and aluminum, wood has a number of advantages, such as beauty, high mechanical resistance to mass, low energy consumption for its processing, good thermal insulation, easy workability [5]. Getting to know the importance of wood, it is important to carry out studies on obtaining its physical and mechanical characteristics. Wood can be used even as a fuel substituting the diminishing fossil energy carriers. [6]
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