Banca de DEFESA: MARIA DE LOURDES XAVIER DE FRANÇA NETA
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.STUDENT : MARIA DE LOURDES XAVIER DE FRANÇA NETA
DATE: 25/08/2023
TIME: 09:00
LOCAL: https://meet.google.com/bij-gvxq-oee
TITLE:
PHYSICAL AND MECHANICAL CHARACTERIZATION OF WOOD SPECIES FROM THE CAATINGA FOR USE IN CIVIL CONSTRUCTION
KEY WORDS:
Caatinga. Properties. Classification. Sustainability. Mimosa Tenuiflora. Aspidosperma Piryfolium.
PAGES: 72
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Construção Civil
SPECIALTY: Materiais e Componentes de Construção
SUMMARY:
The civil construction sector has continuously sought materials that have a lower impact on the built environment, for this reason the use of wood has become attractive because it is a natural and renewable material. Knowledge of physical and mechanical properties is essential to classify new species and indicate their constructive component use. In the Northeast region of Brazil, the Caatinga biome stands out for its biodiversity as the only fully national biome. However, the physical and mechanical properties of the local species are little known and investigated and therefore their application becomes limited, being commonly used for energy purposes. With this, the study seeks to characterize the species Mimosa Tenuiflora and Aspidosperma Piryfolium native to the Caatinga biome and indicate potential uses in civil construction. Physical tests were performed to determine moisture (U), density ( ), apparent density ( ), dimensional stability ( , ΔV) and thermal conductivity; mechanical tests of compression parallel to the fibers (fc0), parallel and perpendicular shearing (fv0, fv90), traction parallel and perpendicular to the fibers (ft0, ft90), Janka hardness parallel and perpendicular (fH0, fH90), static bending (fM0) and elastic modulus test by non-destructive methods by ultrasound, stress waves and longitudinal and flexural excitation. The Shapiro-Wilk test and the Pearson correlation between physical and mechanical properties were used. The indication of applications of the species was carried out through the classification proposed by the IPT (2013) and IPT/SUDAM (1981), using the criteria of Nahuz (1974) and Nogueira (1991). The results show the species Mimosa Tenuiflora with 13 correlations and Aspidosperma Piryfolium with 19 representative correlations between physical and mechanical properties. Both species have equivalent properties to the commercialized species for constructive use, Aspidosperma Piryfolium can be used in light civil construction. Meanwhile, Mimosa Tenuiflora can be used in light and heavy civil construction.
COMMITTEE MEMBERS:
Presidente - ***.403.354-** - KLEBER CAVALCANTI CABRAL - UFERSA
Interno - ***.621.844-** - MARCOS ALYSSANDRO SOARES DOS ANJOS - IFRN
Externa ao Programa - 1694892 - EDNA MOURA PINTO - UFRNExterno à Instituição - WENDELL ROSSINE MEDEIROS DE SOUZA - UFERSA