Assessing the natural durability of different tropical timbers in soil-bed tests
| Autor: | Serafín Colín-Urieta, Artemio Carrillo-Parra, José Guadalupe Rutiaga-Quiñones, Pablo López-Albarran, Rosalio Gabriel Parra, José Javier Corral-Rivas |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Maderas: Ciencia y Tecnología, Vol 21, Iss 2 (2019) |
| Druh dokumentu: | article |
| ISSN: | 0717-3644 0718-221X |
| Popis: | Ground contact speeds up timber decay because of the large number of microorganisms in soil. This study, we assessed the natural durability of seven tropical species using the European standard EN 807 (2001). We embedded samples of Dalbergia granadillo, Cordia elaeagnoides, Swietenia humillis, Tabebuia donell-smithii, Hura polyandra, Enterolobium cyclocarpum and Tabebuia rosea and temperate species Fagus sylvatica (as a control) in sandy, clay-sandy-loam and clay-loam for 8, 16, 24 and 32 weeks. We evaluated durability of the samples by determining the mass loss and modulus of elasticity (MOE) loss. The results varied significantly (p < 0.001) depending on timber species and soil type considered. The D. granadillo and C. elaeagnoides were the most durable, with mass losses of 4.5%, 6.5% and MOE losses of 4.5%, 20.5%, respectively. F. sylvatica, T. rosea and E. cyclocarpum samples were the least durable, with mass losses of 22.3-25% and MOE losses of 35.8-59.8%, respectively. Decay was most aggressive in sandy-clay-loam soil followed by the clay-loam soil and finally the sandy soil. |
| Databáze: | Directory of Open Access Journals |
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