Floresta e Ambiente
https://floram.org/article/doi/10.1590/2179-8087-FLORAM-2022-0019
Floresta e Ambiente
Original Article Forest Products Science and Tecnology

Influence of Moisture on Physical and Mechanical Properties of Pouteria Pachycarpa Wood

Felipe Nascimento Arroyo, Iuri Fazolin Fraga, Larissa Soriani Zanini Ribeiro Soares, Vinicius Borges de Moura Aquino, Heloiza Candeia Ruthes, Fernando Júnior Resende Mascarenhas, Herisson Ferreira dos Santos, André Luis Christoforo, Francisco Antonio Rocco Lahr

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Abstract

According to the Brazilian standard for wooden structures, strength and stiffness increase linearly with decreasing moisture; however, as wood is a natural, heterogeneous and anisotropic material, certain strength and stiffness properties may not be affected even by large differences in moisture. Therefore, this work aims to evaluate the reliability of the resistance and rigidity transformation equations as a function of moisture, used to correct the properties when the test was not performed at 12% moisture. Furthermore, it was checked whether the humidity affects the properties of the studied species. Of the 15 properties analyzed, 2 did not show changes when analyzed at the fiber saturation point and at 12% moisture. Additionally, the correction equations of the Brazilian standard showed errors of up to 24% in the estimation of properties at 12% moisture. Thus, the need to correct the Brazilian standard for wooden structures is evident.

Keywords

Casca Grossa; ANOVA; NBR 7190

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Submitted date:
02/22/2022

Accepted date:
04/25/2022

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