Effect of Heat Treatment on Sorption Properties and Dimensional Stability of Wood
This research was performed in order to determine how the heating process affects sorption properties and dimensional and shape stability of oak, lime and birch wood. By subjecting specimens to 3 hours heating at 130, 160, 190 and 220<sub> </sub>ºC temperatures, a decrease in volume, den...
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| Format: | Article |
| Language: | English |
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Kaunas University of Technology
2013-09-01
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| Series: | Medžiagotyra |
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| Online Access: | http://matsc.ktu.lt/index.php/MatSc/article/view/5239 |
| _version_ | 1818296982132752384 |
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| author | Povilas NAVICKAS Darius ALBREKTAS |
| author_facet | Povilas NAVICKAS Darius ALBREKTAS |
| author_sort | Povilas NAVICKAS |
| collection | DOAJ |
| description | This research was performed in order to determine how the heating process affects sorption properties and dimensional and shape stability of oak, lime and birch wood. By subjecting specimens to 3 hours heating at 130, 160, 190 and 220<sub> </sub>ºC temperatures, a decrease in volume, density and mass was observed in proportion to the applied temperature. It was established that when oak wood specimens underwent heating at 220<sub> </sub>ºC temperature, the decline of mass was 1.2 times higher than in the case of birch specimens. Both heated and unheated specimens underwent moistening in air at 25<sub> </sub>ºC ±1<sub> </sub>ºC temperature for 3 weeks with relative humidity being 85 % ±1 % and were soaked in water at room temperature for 4 hours. It was found that after applying high temperature heating, specimens absorbed smaller amounts of moisture. It was demonstrated that during the soaking process, the volume of unheated specimens was 3 times higher than in the case of specimens heated at 220<sub> </sub>ºC temperature. The change in the volume of unheated oak was 1.27 times smaller than in the case of lime specimens and 1.16 times larger than in the case of birch specimens, which underwent heating at 220<sub> </sub>ºC temperature. In addition, specimens that were exposed to heat had more stable measurements and shapes. It was noticed that the heating process caused significant changes in moisture and dimensional stability of specimens, when higher temperatures ranging from 190<sub> </sub>ºC to 220<sub> </sub>ºC were used. <p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.19.3.5239">http://dx.doi.org/10.5755/j01.ms.19.3.5239</a></p> |
| first_indexed | 2024-12-13T04:12:11Z |
| format | Article |
| id | doaj.art-cb86825cc1be4c64acd3500886810d40 |
| institution | Directory Open Access Journal |
| issn | 1392-1320 2029-7289 |
| language | English |
| last_indexed | 2024-12-13T04:12:11Z |
| publishDate | 2013-09-01 |
| publisher | Kaunas University of Technology |
| record_format | Article |
| series | Medžiagotyra |
| spelling | doaj.art-cb86825cc1be4c64acd3500886810d402022-12-22T00:00:01ZengKaunas University of TechnologyMedžiagotyra1392-13202029-72892013-09-0119329129410.5755/j01.ms.19.3.52392476Effect of Heat Treatment on Sorption Properties and Dimensional Stability of WoodPovilas NAVICKAS0Darius ALBREKTAS1Kaunas University of TechnologyKaunas University of TechnologyThis research was performed in order to determine how the heating process affects sorption properties and dimensional and shape stability of oak, lime and birch wood. By subjecting specimens to 3 hours heating at 130, 160, 190 and 220<sub> </sub>ºC temperatures, a decrease in volume, density and mass was observed in proportion to the applied temperature. It was established that when oak wood specimens underwent heating at 220<sub> </sub>ºC temperature, the decline of mass was 1.2 times higher than in the case of birch specimens. Both heated and unheated specimens underwent moistening in air at 25<sub> </sub>ºC ±1<sub> </sub>ºC temperature for 3 weeks with relative humidity being 85 % ±1 % and were soaked in water at room temperature for 4 hours. It was found that after applying high temperature heating, specimens absorbed smaller amounts of moisture. It was demonstrated that during the soaking process, the volume of unheated specimens was 3 times higher than in the case of specimens heated at 220<sub> </sub>ºC temperature. The change in the volume of unheated oak was 1.27 times smaller than in the case of lime specimens and 1.16 times larger than in the case of birch specimens, which underwent heating at 220<sub> </sub>ºC temperature. In addition, specimens that were exposed to heat had more stable measurements and shapes. It was noticed that the heating process caused significant changes in moisture and dimensional stability of specimens, when higher temperatures ranging from 190<sub> </sub>ºC to 220<sub> </sub>ºC were used. <p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.19.3.5239">http://dx.doi.org/10.5755/j01.ms.19.3.5239</a></p>http://matsc.ktu.lt/index.php/MatSc/article/view/5239heat-treated woodswellingsorptiondimensional stability |
| spellingShingle | Povilas NAVICKAS Darius ALBREKTAS Effect of Heat Treatment on Sorption Properties and Dimensional Stability of Wood Medžiagotyra heat-treated wood swelling sorption dimensional stability |
| title | Effect of Heat Treatment on Sorption Properties and Dimensional Stability of Wood |
| title_full | Effect of Heat Treatment on Sorption Properties and Dimensional Stability of Wood |
| title_fullStr | Effect of Heat Treatment on Sorption Properties and Dimensional Stability of Wood |
| title_full_unstemmed | Effect of Heat Treatment on Sorption Properties and Dimensional Stability of Wood |
| title_short | Effect of Heat Treatment on Sorption Properties and Dimensional Stability of Wood |
| title_sort | effect of heat treatment on sorption properties and dimensional stability of wood |
| topic | heat-treated wood swelling sorption dimensional stability |
| url | http://matsc.ktu.lt/index.php/MatSc/article/view/5239 |
| work_keys_str_mv | AT povilasnavickas effectofheattreatmentonsorptionpropertiesanddimensionalstabilityofwood AT dariusalbrektas effectofheattreatmentonsorptionpropertiesanddimensionalstabilityofwood |