Efeitos do tratamento térmico e do intemperismo na resistência aos cupins de uma madeira de rápido crescimento

Abstract

This work deals with an evaluation of the resistance against subterranean termites of a thermally treated and weathered fast growing pine wood. The pine wood was thermally treated at 180 ºC, 200 ºC, and 220°C for 2 h and then exposed to artificial weathering for three months. Chemical, hygroscopic, thermal, mechanical, colorimetric, biological and morphological characteristics were evaluated. Compared to the pristine wood, as expected, the thermal treatments yielded increases in thermal, hygroscopic, and colorimetric features. The thermoretification helped for retaining thermal stability, volumetric hydrophobicity, color and roughness of the pine wood when exposed the weathering test. None characteristic associated with the termites attack were affected by the previous changes ascribed to the weathering.