Density and Mechanical Properties of Oak Sapwood Versus Heartwood

The aim of this study was to investigate the main mechanical properties of sapwood and heartwood in white and red oaks. Samples of wood were taken from 26 oak beams prepared to be used for railway sleepers, of which 62 % were from white oak (either Quercus petraea or. Q. robur) and 38 % from red oak...

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Autores principales:	Maks Merela, Katarina Čufar
Formato:	article
Lenguaje:	EN
Publicado:	University of Zagreb, Faculty of Forestry and Wood Technology 2014
Materias:	oak Quercus sapwood heartwood properties density bending strength modulus of elasticity Brinell hardness Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/9f67b66149ac4fa69186382058b4e019
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spelling	oai:doaj.org-article:9f67b66149ac4fa69186382058b4e0192021-12-02T01:00:24ZDensity and Mechanical Properties of Oak Sapwood Versus Heartwood10.5552/drind.2013.13250012-67721847-1153https://doaj.org/article/9f67b66149ac4fa69186382058b4e0192014-01-01T00:00:00Zhttp://hrcak.srce.hr/file/166363https://doaj.org/toc/0012-6772https://doaj.org/toc/1847-1153The aim of this study was to investigate the main mechanical properties of sapwood and heartwood in white and red oaks. Samples of wood were taken from 26 oak beams prepared to be used for railway sleepers, of which 62 % were from white oak (either Quercus petraea or. Q. robur) and 38 % from red oak group, represented by Q. cerris. For both oak groups, the following parameters were determined: the density, bending strength, modulus of elasticity (MOE), compression strength and Brinell hardness of sapwood and heartwood. Multiple analyses were done to compare the properties of sapwood and heartwood, as well as the properties of white vs. red oaks. The results revealed no significant differences between sapwood and heartwood properties but statistically significant differences were found between the properties of white and red oaks. The research results contradict the common opinion of users that the mechanical properties of sapwood are inferior to those of heartwood. Investigations revealed that Q. cerris had even better mechanical properties than Q. robur or Q. petraea, which also contradicts the common opinion that its mechanical properties are inferior to those of white oaks. The results help to understand better wood variability for optimal selection of timber for construction.Maks MerelaKatarina ČufarUniversity of Zagreb, Faculty of Forestry and Wood TechnologyarticleoakQuercussapwoodheartwoodpropertiesdensitybending strengthmodulus of elasticityBrinell hardnessForestrySD1-669.5ENDrvna Industrija, Vol 64, Iss 4, Pp 323-334 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	oak Quercus sapwood heartwood properties density bending strength modulus of elasticity Brinell hardness Forestry SD1-669.5
spellingShingle	oak Quercus sapwood heartwood properties density bending strength modulus of elasticity Brinell hardness Forestry SD1-669.5 Maks Merela Katarina Čufar Density and Mechanical Properties of Oak Sapwood Versus Heartwood
description	The aim of this study was to investigate the main mechanical properties of sapwood and heartwood in white and red oaks. Samples of wood were taken from 26 oak beams prepared to be used for railway sleepers, of which 62 % were from white oak (either Quercus petraea or. Q. robur) and 38 % from red oak group, represented by Q. cerris. For both oak groups, the following parameters were determined: the density, bending strength, modulus of elasticity (MOE), compression strength and Brinell hardness of sapwood and heartwood. Multiple analyses were done to compare the properties of sapwood and heartwood, as well as the properties of white vs. red oaks. The results revealed no significant differences between sapwood and heartwood properties but statistically significant differences were found between the properties of white and red oaks. The research results contradict the common opinion of users that the mechanical properties of sapwood are inferior to those of heartwood. Investigations revealed that Q. cerris had even better mechanical properties than Q. robur or Q. petraea, which also contradicts the common opinion that its mechanical properties are inferior to those of white oaks. The results help to understand better wood variability for optimal selection of timber for construction.
format	article
author	Maks Merela Katarina Čufar
author_facet	Maks Merela Katarina Čufar
author_sort	Maks Merela
title	Density and Mechanical Properties of Oak Sapwood Versus Heartwood
title_short	Density and Mechanical Properties of Oak Sapwood Versus Heartwood
title_full	Density and Mechanical Properties of Oak Sapwood Versus Heartwood
title_fullStr	Density and Mechanical Properties of Oak Sapwood Versus Heartwood
title_full_unstemmed	Density and Mechanical Properties of Oak Sapwood Versus Heartwood
title_sort	density and mechanical properties of oak sapwood versus heartwood
publisher	University of Zagreb, Faculty of Forestry and Wood Technology
publishDate	2014
url	https://doaj.org/article/9f67b66149ac4fa69186382058b4e019
work_keys_str_mv	AT maksmerela densityandmechanicalpropertiesofoaksapwoodversusheartwood AT katarinacufar densityandmechanicalpropertiesofoaksapwoodversusheartwood
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Density and Mechanical Properties of Oak Sapwood Versus Heartwood

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