The effect of wood boiling in water on its moistening, swelling and modulus of elasticity upon longitudinal compression tests
Journal Title: Annals of WULS, Forestry and Wood Technology; Zeszyty naukowe SGGW - Year 2016, Vol 94, Issue
Abstract
The effect of wood boiling in water on its moistening, swelling and modulus of elasticity upon longitudinal compression tests. The effect of wood boiling in water on the moisture content, swelling and compression strength as well as on modulus of elasticity at compression was examined. Hot water treatment times were 15, 30 or 60 minutes. The highest increase in moisture content to 50% was found for beech and birch wood in the first 15 minutes of treatment. Prolonged treatment times provided moisture content about 90% for both species. The black locust wood, due to its structure and anatomy, exhibited lowest susceptibility to moistening – 17% after 60-minute boiling. An intense swelling both in radial and tangential directions was observed for beech and birch. The swelling found for black locust did not exceed 3% regardless of the direction. The hot water treatment resulted in a significant decrease in compression strength and modulus of elasticity at compression (up to 50%) both for beech and birch, while those for black locust were ca. 40%.
Authors and Affiliations
Ewa Dobrowolska, Mariusz Mamiński, KRZYSZTOF J. KRAJEWSKI, Magdalena Muchorowska
Keywords
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