Analysis of rigidity loss and deterioration from exposure in a decay test field of thermorectificated eucalyptus grandis wood
The objective was to evaluate the elasticity dynamic modulus reduction (MOEd) and deterioration of E. grandis thermorectificated wood by exposure to environmental weathering. Six trees were used to obtain 14 logs of 2,4m, with seven from external (sapwood) and the others from internal (heartwood) pa...
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| Format: | Article |
| Language: | English |
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Universidad del Bío-Bío
2014-12-01
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| Series: | Maderas: Ciencia y Tecnología |
| Subjects: | |
| Online Access: | https://revistas.ubiobio.cl/index.php/MCT/article/view/1158 |
| _version_ | 1827381277741809664 |
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| author | Henrique Trevisan João Vicente de Figueiredo Latorraca Angelo Luíz Pacheco dos Santos Juliana Grilo Teixeira Acacio Geraldo de Carvalho |
| author_facet | Henrique Trevisan João Vicente de Figueiredo Latorraca Angelo Luíz Pacheco dos Santos Juliana Grilo Teixeira Acacio Geraldo de Carvalho |
| author_sort | Henrique Trevisan |
| collection | DOAJ |
| description | The objective was to evaluate the elasticity dynamic modulus reduction (MOEd) and deterioration of E. grandis thermorectificated wood by exposure to environmental weathering. Six trees were used to obtain 14 logs of 2,4m, with seven from external (sapwood) and the others from internal (heartwood) part of the trunk. A total of 84 wood samples of 2,5x 5x 50cm were made, with half from the inner and the other from the external trunk portion. 14 treatments were evaluated with six replicates composed of thermorectificated wood submitted two differents times (2 and 4 hours) and three temperatures (200, 215 and 230˚C). An ultrasound Stress Wave Timer device was used to evaluate MOEd and the mass measured by weighing. Samples remained in the decay test field for ten months, and monthly inspected and recorded to xylophogous organism’s occurrence. At the end of this period MOEd and mass were revaluated. The central portion of wood samples were more deteriorated, with mass losses and stiffness losses ranging from (8-56%) and (18-91%), respectively. Lower values were observed in the wood coming from the external portion, with mass losses and stiffness ranging from (3-10%) and (8-20%), respectively. The thermorectificated wood samples were more damaged by action the termites and less by the action of fungi, compared to controls.
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| first_indexed | 2024-03-08T13:53:52Z |
| format | Article |
| id | doaj.art-184cd2c987d840698eceff317a00863b |
| institution | Directory Open Access Journal |
| issn | 0717-3644 0718-221X |
| language | English |
| last_indexed | 2024-03-08T13:53:52Z |
| publishDate | 2014-12-01 |
| publisher | Universidad del Bío-Bío |
| record_format | Article |
| series | Maderas: Ciencia y Tecnología |
| spelling | doaj.art-184cd2c987d840698eceff317a00863b2024-01-15T18:16:44ZengUniversidad del Bío-BíoMaderas: Ciencia y Tecnología0717-36440718-221X2014-12-011622231Analysis of rigidity loss and deterioration from exposure in a decay test field of thermorectificated eucalyptus grandis woodHenrique TrevisanJoão Vicente de Figueiredo LatorracaAngelo Luíz Pacheco dos SantosJuliana Grilo TeixeiraAcacio Geraldo de CarvalhoThe objective was to evaluate the elasticity dynamic modulus reduction (MOEd) and deterioration of E. grandis thermorectificated wood by exposure to environmental weathering. Six trees were used to obtain 14 logs of 2,4m, with seven from external (sapwood) and the others from internal (heartwood) part of the trunk. A total of 84 wood samples of 2,5x 5x 50cm were made, with half from the inner and the other from the external trunk portion. 14 treatments were evaluated with six replicates composed of thermorectificated wood submitted two differents times (2 and 4 hours) and three temperatures (200, 215 and 230˚C). An ultrasound Stress Wave Timer device was used to evaluate MOEd and the mass measured by weighing. Samples remained in the decay test field for ten months, and monthly inspected and recorded to xylophogous organism’s occurrence. At the end of this period MOEd and mass were revaluated. The central portion of wood samples were more deteriorated, with mass losses and stiffness losses ranging from (8-56%) and (18-91%), respectively. Lower values were observed in the wood coming from the external portion, with mass losses and stiffness ranging from (3-10%) and (8-20%), respectively. The thermorectificated wood samples were more damaged by action the termites and less by the action of fungi, compared to controls. https://revistas.ubiobio.cl/index.php/MCT/article/view/1158xylophogousterm treatmentprotection of wood |
| spellingShingle | Henrique Trevisan João Vicente de Figueiredo Latorraca Angelo Luíz Pacheco dos Santos Juliana Grilo Teixeira Acacio Geraldo de Carvalho Analysis of rigidity loss and deterioration from exposure in a decay test field of thermorectificated eucalyptus grandis wood Maderas: Ciencia y Tecnología xylophogous term treatment protection of wood |
| title | Analysis of rigidity loss and deterioration from exposure in a decay test field of thermorectificated eucalyptus grandis wood |
| title_full | Analysis of rigidity loss and deterioration from exposure in a decay test field of thermorectificated eucalyptus grandis wood |
| title_fullStr | Analysis of rigidity loss and deterioration from exposure in a decay test field of thermorectificated eucalyptus grandis wood |
| title_full_unstemmed | Analysis of rigidity loss and deterioration from exposure in a decay test field of thermorectificated eucalyptus grandis wood |
| title_short | Analysis of rigidity loss and deterioration from exposure in a decay test field of thermorectificated eucalyptus grandis wood |
| title_sort | analysis of rigidity loss and deterioration from exposure in a decay test field of thermorectificated eucalyptus grandis wood |
| topic | xylophogous term treatment protection of wood |
| url | https://revistas.ubiobio.cl/index.php/MCT/article/view/1158 |
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