Verificação experimental da fluência na madeira: pinus elliottii

Abstract

Wood has great relevance in civil construction, as it is a renewable material that requires little energy in production compared to other materials. Furthermore, it has interesting behavior in relation to fire and hygroscopic properties. To use it, it is necessary to have knowledge of its properties, especially strength. Strength can vary over time, a characteristic called creep, which is rarely addressed in NBR7190 (2022) but must be considered. A 4-point bending test was carried out for 6 weeks to observe the effects of creep on the piece. Spreadsheets and a graph of displacement over time were created with the results of the test. It was concluded that the displacement calculated with the creep coefficient is relatively close to the values found for the test and the graph presented is similar to that found in the literature. Despite this, as it is an anisotropic material, variations in properties, including resistance, may occur. Keywords: wood, creep, strength.