Caracterização físico-mecânica da madeira peroba-rosa

Abstract

Wood is a material that presents several advantages such as a visually attractive and the fact that she is a sustainable material, but for use wood in structures we must know the resistance values specified in projects. The test methods for determining the properties of the wood are defined by ABNT NBR 7190 (ABNT, 1997) norm of Design of wooden structures. This work used these methods to determine the properties of the Peroba-Rosa wood, Aspidosperma polyneuron, in order to verify the possibility of using it in structures. Tests of moisture, density, parallel and normal compression to the fibers were carried out with specimens drawn from four different lots of this wood, all without visually defects. The species Aspidosperma polyneuron belongs to the family Apocynaceae and is distributed naturally by the Center-West and Amazon region. The wood presented characteristic resistance to parallel compression of 50,54 MPa, average apparent density of 573 kg / m3 and average basic density of 491 kg / m3. Their physical characteristics suggest a wood of normal quality, relatively light in relation to its resistance. Its mechanical characteristics indicate high resistance, corresponding to class C40, and can be applied in medium to large structures.