Effect of static densification of treated paulownia wood on relationship between strength and density

In this paper effect of static densification of treated paulownia on relationship between strength properties and density was investigated. Specimens were steamed at 130 and 170oc and immediately were compressed to 35% and 45% of their original thickness in radial direction. Mechanical properties su...

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Autores principales:	Alireza Mohammadi, Taghi Tabarsa, Mohammad Tasoji
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2011
Materias:	static densification paulownia density index strength index quality index strength potential index Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/804320e60f20470594926d0ca039ff5b
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spelling	oai:doaj.org-article:804320e60f20470594926d0ca039ff5b2021-12-02T02:36:28ZEffect of static densification of treated paulownia wood on relationship between strength and density1735-09132383-112X10.22092/ijwpr.2011.117239https://doaj.org/article/804320e60f20470594926d0ca039ff5b2011-09-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_117239_2929454f16a92125ff3270e2d276dbfb.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XIn this paper effect of static densification of treated paulownia on relationship between strength properties and density was investigated. Specimens were steamed at 130 and 170oc and immediately were compressed to 35% and 45% of their original thickness in radial direction. Mechanical properties such as bending strength, brinell surface hardness and compression strength in axial and radial direction were determined for non-densified and densified wood. Indexes of density, strength, quality and strength potential were calculated to study the relationship between strength and density. The results show that the density index and strength index and also strengths significantly increased with increase in densification but strength potential indexes decreased. Steam treatment at 130oc had a slight positive effect on the strengths and strength potential indexes as effect of softening the wood but the strength potential indexes and strengths decreased due to treatment of wood at 170oc. Generally, strength potential indexes of all tested mechanical properties show that strength of densified paulownia was lower compared to what had expected for non-densified paulownia from increasing density, which in turn demonstrate the cell walls were negatively affected by compression. Axial compression strength and brinell hardness were slightly affected by densification.Alireza MohammadiTaghi TabarsaMohammad TasojiRegional Information Center for Science and Technology (RICeST)articlestatic densificationpaulowniadensity indexstrength indexquality indexstrength potential indexForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 26, Iss 3, Pp 592-604 (2011)
institution	DOAJ
collection	DOAJ
language	FA
topic	static densification paulownia density index strength index quality index strength potential index Forestry SD1-669.5
spellingShingle	static densification paulownia density index strength index quality index strength potential index Forestry SD1-669.5 Alireza Mohammadi Taghi Tabarsa Mohammad Tasoji Effect of static densification of treated paulownia wood on relationship between strength and density
description	In this paper effect of static densification of treated paulownia on relationship between strength properties and density was investigated. Specimens were steamed at 130 and 170oc and immediately were compressed to 35% and 45% of their original thickness in radial direction. Mechanical properties such as bending strength, brinell surface hardness and compression strength in axial and radial direction were determined for non-densified and densified wood. Indexes of density, strength, quality and strength potential were calculated to study the relationship between strength and density. The results show that the density index and strength index and also strengths significantly increased with increase in densification but strength potential indexes decreased. Steam treatment at 130oc had a slight positive effect on the strengths and strength potential indexes as effect of softening the wood but the strength potential indexes and strengths decreased due to treatment of wood at 170oc. Generally, strength potential indexes of all tested mechanical properties show that strength of densified paulownia was lower compared to what had expected for non-densified paulownia from increasing density, which in turn demonstrate the cell walls were negatively affected by compression. Axial compression strength and brinell hardness were slightly affected by densification.
format	article
author	Alireza Mohammadi Taghi Tabarsa Mohammad Tasoji
author_facet	Alireza Mohammadi Taghi Tabarsa Mohammad Tasoji
author_sort	Alireza Mohammadi
title	Effect of static densification of treated paulownia wood on relationship between strength and density
title_short	Effect of static densification of treated paulownia wood on relationship between strength and density
title_full	Effect of static densification of treated paulownia wood on relationship between strength and density
title_fullStr	Effect of static densification of treated paulownia wood on relationship between strength and density
title_full_unstemmed	Effect of static densification of treated paulownia wood on relationship between strength and density
title_sort	effect of static densification of treated paulownia wood on relationship between strength and density
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2011
url	https://doaj.org/article/804320e60f20470594926d0ca039ff5b
work_keys_str_mv	AT alirezamohammadi effectofstaticdensificationoftreatedpaulowniawoodonrelationshipbetweenstrengthanddensity AT taghitabarsa effectofstaticdensificationoftreatedpaulowniawoodonrelationshipbetweenstrengthanddensity AT mohammadtasoji effectofstaticdensificationoftreatedpaulowniawoodonrelationshipbetweenstrengthanddensity
_version_	1718402359842832384

Effect of static densification of treated paulownia wood on relationship between strength and density

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