Creep behavior of heat treated beech wood and the relation to its chemical structure
| Autor: | Fahimeh Hoseinzadeh, Seyed Majid Zabihzadeh, Foroogh Dastoorian |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Moisture technology industry and agriculture 0211 other engineering and technologies Modulus 020101 civil engineering 02 engineering and technology Building and Construction 0201 civil engineering Amorphous solid chemistry.chemical_compound chemistry Creep 021105 building & construction Degradation (geology) Lignin General Materials Science Cellulose Composite material Fourier transform infrared spectroscopy Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 226:220-226 |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2019.07.181 |
| Popis: | In this study, wood was heat treated at temperatures of 160, 175 and 190 °C and creep behavior of modified wood at various moisture contents was assessed. Fourier-transform infrared spectroscopy (FTIR) was conducted to find a relation between creep behavior and structural changes, aiming to develop their applications for construction purposes. FTIR results showed fundamental structural changes: removal of extractives, hemicelluloses and amorphous parts of cellulose and partial degradation of lignin. Creep results showed that unlike elastic short-term modulus, creep modulus decreased at treating temperature higher than 160 °C. Treated samples at 160 °C had an improved creep performance in moist conditions, attributable to lower degradation of cell wall components and to the lower hygroscopicity. |
| Databáze: | OpenAIRE |
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