Resistência biológica de painéis aglomerados produzidos a partir de resíduos agrícolas e urbanos

Abstract

The objective of this study was to evaluate the biological resistance of agglomerated panels made from agricultural residues (grapevine, annoni grass), urban (carton pack, plastic) and forest (Pinus sp. Wood) of white rot, Pycnoporus sanguineus. For the evaluations, the accelerated rotting test was performed according to the recommendations of the American standard ASTM D 2017. The specimens were removed from the center of the panels, with dimensions of 2.0 x 2.0 cm, totaling 25 samples divided into 5 treatments. The resistance to attack of the fungus was then determined by mass loss. The averages at 5% of significance differed statiscally, among 3 treatments by the Duncan test. Scanning microscopy (SEM) allowed visualization of the panel particles before and after the fungus attack, facilitating the understanding of the results obtained in the loss of mass. The 100% panel of pine wood was classified as non-resistant, and the addition of percentages of agricultural residues (stump, annoni grass) and urban (carton and plastic) residues improved the resistance class of the panels, becoming resistant and very resistant, respectively.