Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards

This study was carried out to investigate the effect of two board density levels of 800 kg/m3 and 1100 kg/m3 and two levels of industrial wood to cement ratios of 25:75 and 35:65 on mechanical and physical properties of wood cement composites. Boards were produced and then the density of boards were...

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Autores principales:	M. Ghofrani, A. Fazeli
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2021
Materias:	wood cement composites bending properties internal bonding Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/2c2aec61803946a5a43d33157be1396e
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spelling	oai:doaj.org-article:2c2aec61803946a5a43d33157be1396e2021-12-02T14:29:30ZEffect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards10.22092/IJWPR.2021.351532.16301735-09132383-112Xhttps://doaj.org/article/2c2aec61803946a5a43d33157be1396e2021-02-01T00:00:00Zhttps://ijwpr.areeo.ac.ir/article_123220_0e4cdf46b84990884810081a2bd58dbb.pdf?lang=enhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XThis study was carried out to investigate the effect of two board density levels of 800 kg/m3 and 1100 kg/m3 and two levels of industrial wood to cement ratios of 25:75 and 35:65 on mechanical and physical properties of wood cement composites. Boards were produced and then the density of boards were calculated. The experimental boards were subjected to modulus of elasticity and modulus of rupture tests in accordance with EN 310. Internal bonding was evaluated according to EN 319. Water absorption and thickness swelling were evaluated after 2 and 24 hours immersion in water according to EN 317. Fire resistance was evaluated according to ISO 11925. Results indicated that bending properties of the boards, including modulus of elasticity and modulus of rupture, and internal bonding increased at higher density. That was attributed to the high compression and improved binding between fiber and cement matrix. Modulus of elasticity increased significantly as cement content was raised. Modulus of rupture values were inversely related to cement content. Increasing wood to cement ratio led to low internal bonding because the low amount of cement can be insufficient to cover the wood particles for effective bonding to resist the tensile forces applied during internal bonding test. As the board density increased, dimensional stability increased. Variations in the wood to cement ratio have been reported to significantly affect the dimensional stability of specimens. Water absorption and thickness swelling increased with the increase in wood to cement ratio. Fire resistance of specimens improved when the board density and cement content increased. All of the mechanical properties of boards produced in this study satisfied the EN 634-2 requirements.M. GhofraniA. Fazeli Regional Information Center for Science and Technology (RICeST)articlewood cement compositesbending propertiesinternal bondingForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 35, Iss 4, Pp 362-375 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	wood cement composites bending properties internal bonding Forestry SD1-669.5
spellingShingle	wood cement composites bending properties internal bonding Forestry SD1-669.5 M. Ghofrani A. Fazeli Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards
description	This study was carried out to investigate the effect of two board density levels of 800 kg/m3 and 1100 kg/m3 and two levels of industrial wood to cement ratios of 25:75 and 35:65 on mechanical and physical properties of wood cement composites. Boards were produced and then the density of boards were calculated. The experimental boards were subjected to modulus of elasticity and modulus of rupture tests in accordance with EN 310. Internal bonding was evaluated according to EN 319. Water absorption and thickness swelling were evaluated after 2 and 24 hours immersion in water according to EN 317. Fire resistance was evaluated according to ISO 11925. Results indicated that bending properties of the boards, including modulus of elasticity and modulus of rupture, and internal bonding increased at higher density. That was attributed to the high compression and improved binding between fiber and cement matrix. Modulus of elasticity increased significantly as cement content was raised. Modulus of rupture values were inversely related to cement content. Increasing wood to cement ratio led to low internal bonding because the low amount of cement can be insufficient to cover the wood particles for effective bonding to resist the tensile forces applied during internal bonding test. As the board density increased, dimensional stability increased. Variations in the wood to cement ratio have been reported to significantly affect the dimensional stability of specimens. Water absorption and thickness swelling increased with the increase in wood to cement ratio. Fire resistance of specimens improved when the board density and cement content increased. All of the mechanical properties of boards produced in this study satisfied the EN 634-2 requirements.
format	article
author	M. Ghofrani A. Fazeli
author_facet	M. Ghofrani A. Fazeli
author_sort	M. Ghofrani
title	Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards
title_short	Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards
title_full	Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards
title_fullStr	Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards
title_full_unstemmed	Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards
title_sort	effect of board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2021
url	https://doaj.org/article/2c2aec61803946a5a43d33157be1396e
work_keys_str_mv	AT mghofrani effectofboarddensityandindustrialwoodparticlestocementratioonmechanicalandphysicalpropertiesofwoodcementcompositeboards AT afazeli effectofboarddensityandindustrialwoodparticlestocementratioonmechanicalandphysicalpropertiesofwoodcementcompositeboards
_version_	1718391181956612096

Effect of Board density and industrial wood particles to cement ratio on mechanical and physical properties of wood cement composite boards

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