Caracterização tecnológica de madeiras amazônicas comercializadas no município de Itacoatiara – AM

Abstract

Wood, as a raw material in civil construction, has been used since the Neolithic period, according to structures located in Scotland. The Brazilian Amazon is one of the main tropical wood producing regions in the world. The Brazilian logs production is about 26 million of m³, that supply sawmills and lamination industry, managed from natural forests. Somehow, there is not same market visibility for all species, but when studying the technological value these species, there is high possibility of comparison or similarities. Thus, this study aimed to characterize different Amazonian wood species through the study of their physical and chemical properties. The wood samples used were arurá vermelho (Iryanthera sp.), louro gamela (Sextonia rubra), louro preto (Ocotea sp.), marupá (Simarouba amara Aubl.), sucupira preta (Diplotropis racemosa), sucupira vermelha (Andira parviflora) and Tanimbuca (Buchenavia sp.). It was observed that the species of arurá, louro gamela and louro preto presented average basic density of 0.64, 0.53, 0.51 g/cm³ respectively. The species of sucupira vermelha, sucupira preta and tanimbuca presented high density, 0.72, 0.79, 0.78 g/cm³ respectively and marupá presented low density 0.38 g/cm³. For the anisotropic factor, it was possible to observe the uniformity of the physical properties of the species under study, except for the louro preto, which presented nonstandard results. The ash content ranged from 0.12 to 0.73%. The results found for arurá vermelho and marupá presented the highest average values for ash contents of 0.47 and 0.73, respectively. Louro gamela, louro preto and tanimbuca showed the lowest values of 0.12, 0.21 and 0.21%, respectively.