Natural durability of five tropical wood species in field decay tests

Measuring the natural resistance of wood is fundamental for proper use. The durability five tropical species was investigated by field decay testing during exposure 360 days. Wood logs (length 0,5 m; diameter 8 cm - 12 cm) were used in this study. mass loss and index calculated visual analysis time performed all samples. samples presented evidence two different groups concerning durability. first group (Mimosa caesalpiniifolia, Mimosa ophthalmocentra, tenuiflora) showed highest to biodeterioration, better or similar performance compared treated Eucalypts (as control). other (Aspidosperma pyrifolium Cordia oncocalyx) had lower outdoor service, being more susceptible decay. In general, indicated uses that require medium prolonged exposure, such as timber stakes fence posts.