Determinação da umidade de equilíbrio da madeira de Cupiúba comercializada no município de Jataí pelo método gravimétrico e de Simpson

Abstract

Determining the humidity of equilibrium of the wood is a task of paramount importance, as in addition to ensuring savings in the costs associated with its transport, it allows obtaining products with better quality and efficiency. In this sense, the main objective of this work is to determining the equilibrium moisture content of Cupiúba, wood with several applications in civil construction, sold in Jataí/GO, a city in the Serra do Caiapó microregion. For that, tests will be carried out using the oven drying method, following the guidelines of NBR-7190:1997, together with the comparison of the equilibrium moisture of the wood (UEM) estimated by Simpson's equation, taking into account the temperature and relative humidity of the air. Based on the essays carried out and on the collection of temperature and relative humidity (UR) data, by analyzing the results obtained both graphically and by submitting them under the conditions of temperature at 30°C and 20°C and UR at 40%, 60 % and 80%, it was observed that the UEM values estimated by Simpson's equation tend to be higher than those obtained by the drying method, being ideal determining the humidity of equilibrium of the wood according to the species, climatic conditions and the place where it will be applied.