A correlation between the gas and liquid permeabilities of beech wood heat-treated in hot water and steam mediums

Heat-treatment, a major method of wood modification for improving dimensional stability and natural durability, has been studied considerably in the scientific literature. This study will focus on the effect of heat-treatment on permeability, an important physical property of wood by subjecting beec...

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Autores principales:	Taghiyari,Hamid Reza, Talaei,Aisona, Karimi,Ali
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2011
Materias:	Heat treatment hydrothermal hygrotherma wood modification wood swelling
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000300008
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spelling	oai:scielo:S0718-221X20110003000082012-10-09A correlation between the gas and liquid permeabilities of beech wood heat-treated in hot water and steam mediumsTaghiyari,Hamid RezaTalaei,AisonaKarimi,Ali Heat treatment hydrothermal hygrotherma wood modification wood swelling Heat-treatment, a major method of wood modification for improving dimensional stability and natural durability, has been studied considerably in the scientific literature. This study will focus on the effect of heat-treatment on permeability, an important physical property of wood by subjecting beech samples to two different mediums of hot water and steam, as well as in two buffered hot water of pH 7 and 8. Hydrothermal treatment caused gas permeability to decrease to its lowest value among the treatments (91.6% decrease comparing the control treatment). Hydrothermal treatment in buffered hot water of pH 8 made the lowest impact on gas permeability (12.3% decrease). The decrease in gas permeability was due to settlement of extractives on vessel perforation plates. Gas permeability showed a highly significant correlation with the amount of swelling in radial direction. Low correlation was found between liquid permeability with water absorption and the amount of swelling. Gas permeability is considered a suitable criterion for predicting the amount of swelling in beech wood.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.13 n.3 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000300008en10.4067/S0718-221X2011000300008
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Heat treatment hydrothermal hygrotherma wood modification wood swelling
spellingShingle	Heat treatment hydrothermal hygrotherma wood modification wood swelling Taghiyari,Hamid Reza Talaei,Aisona Karimi,Ali A correlation between the gas and liquid permeabilities of beech wood heat-treated in hot water and steam mediums
description	Heat-treatment, a major method of wood modification for improving dimensional stability and natural durability, has been studied considerably in the scientific literature. This study will focus on the effect of heat-treatment on permeability, an important physical property of wood by subjecting beech samples to two different mediums of hot water and steam, as well as in two buffered hot water of pH 7 and 8. Hydrothermal treatment caused gas permeability to decrease to its lowest value among the treatments (91.6% decrease comparing the control treatment). Hydrothermal treatment in buffered hot water of pH 8 made the lowest impact on gas permeability (12.3% decrease). The decrease in gas permeability was due to settlement of extractives on vessel perforation plates. Gas permeability showed a highly significant correlation with the amount of swelling in radial direction. Low correlation was found between liquid permeability with water absorption and the amount of swelling. Gas permeability is considered a suitable criterion for predicting the amount of swelling in beech wood.
author	Taghiyari,Hamid Reza Talaei,Aisona Karimi,Ali
author_facet	Taghiyari,Hamid Reza Talaei,Aisona Karimi,Ali
author_sort	Taghiyari,Hamid Reza
title	A correlation between the gas and liquid permeabilities of beech wood heat-treated in hot water and steam mediums
title_short	A correlation between the gas and liquid permeabilities of beech wood heat-treated in hot water and steam mediums
title_full	A correlation between the gas and liquid permeabilities of beech wood heat-treated in hot water and steam mediums
title_fullStr	A correlation between the gas and liquid permeabilities of beech wood heat-treated in hot water and steam mediums
title_full_unstemmed	A correlation between the gas and liquid permeabilities of beech wood heat-treated in hot water and steam mediums
title_sort	correlation between the gas and liquid permeabilities of beech wood heat-treated in hot water and steam mediums
publisher	Universidad del Bío-Bío
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2011000300008
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A correlation between the gas and liquid permeabilities of beech wood heat-treated in hot water and steam mediums

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