INVESTIGATION ON DESIGN AND FABRICATION OF TWO HALF LAMINATED SLEEPERS IN COMPARION WITH CONVENTIONAL TYPE

The economical importance of railroads and their development in Iran have been caused those annually 500000 wood sleepers to be required, if sleepers are to be maintained in suitable condition. However, the wood resources are also limited, specially producing roadbeds with high classes. For conserva...

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Autores principales:	Habibalah Arabtabar, Abdolrahman Hosseinzadeh, Ali Rezanezhad, Ghanbar Ebrahimi
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2001
Materias:	WOODEN SLEEPER TWO HALF LAMINATED SLEEPERS WOOD IMPREGNATION STATIC BENDING Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/debb72da1acf4df7bfba4c5d2fd1acf6
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id	oai:doaj.org-article:debb72da1acf4df7bfba4c5d2fd1acf6
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spelling	oai:doaj.org-article:debb72da1acf4df7bfba4c5d2fd1acf62021-12-02T05:36:34ZINVESTIGATION ON DESIGN AND FABRICATION OF TWO HALF LAMINATED SLEEPERS IN COMPARION WITH CONVENTIONAL TYPE1735-09132383-112X10.22092/ijwpr.2001.117500https://doaj.org/article/debb72da1acf4df7bfba4c5d2fd1acf62001-01-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_117500_d41d8cd98f00b204e9800998ecf8427e.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XThe economical importance of railroads and their development in Iran have been caused those annually 500000 wood sleepers to be required, if sleepers are to be maintained in suitable condition. However, the wood resources are also limited, specially producing roadbeds with high classes. For conservation of natural resources (Forests) we need to use logs with lower classes as well. The process of lamination can permits manufacturing sleepers from small logs. Therefore, the manufacturing of two half laminated ties (interface vertical or horizontal) were lower. As in Iranian beech is usually used for manufacturing sleepers, in this study it was also utilized to make dowel-laminated sleepers. The results of this study showed that, the processes of impregnation of dowel-laminated sleepers with preservative (Creosote) and depth of its penetration were better established than in usual sleepers. Laboratory test indicated that modulus of elasticity of two half laminated - vertical sleepers was the same as the usual sleepers but this resistance in two half laminated - horizontal sleepers was decreased. Finally after five years exposure under extensive service, tests no failures in dowel-laminated sleepers especially in vertical shapes were observed.Habibalah ArabtabarAbdolrahman HosseinzadehAli RezanezhadGhanbar EbrahimiRegional Information Center for Science and Technology (RICeST)articleWOODEN SLEEPERTWO HALF LAMINATED SLEEPERSWOODIMPREGNATIONSTATIC BENDINGForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 5, Iss 12- شماره 251, Pp 39-72 (2001)
institution	DOAJ
collection	DOAJ
language	FA
topic	WOODEN SLEEPER TWO HALF LAMINATED SLEEPERS WOOD IMPREGNATION STATIC BENDING Forestry SD1-669.5
spellingShingle	WOODEN SLEEPER TWO HALF LAMINATED SLEEPERS WOOD IMPREGNATION STATIC BENDING Forestry SD1-669.5 Habibalah Arabtabar Abdolrahman Hosseinzadeh Ali Rezanezhad Ghanbar Ebrahimi INVESTIGATION ON DESIGN AND FABRICATION OF TWO HALF LAMINATED SLEEPERS IN COMPARION WITH CONVENTIONAL TYPE
description	The economical importance of railroads and their development in Iran have been caused those annually 500000 wood sleepers to be required, if sleepers are to be maintained in suitable condition. However, the wood resources are also limited, specially producing roadbeds with high classes. For conservation of natural resources (Forests) we need to use logs with lower classes as well. The process of lamination can permits manufacturing sleepers from small logs. Therefore, the manufacturing of two half laminated ties (interface vertical or horizontal) were lower. As in Iranian beech is usually used for manufacturing sleepers, in this study it was also utilized to make dowel-laminated sleepers. The results of this study showed that, the processes of impregnation of dowel-laminated sleepers with preservative (Creosote) and depth of its penetration were better established than in usual sleepers. Laboratory test indicated that modulus of elasticity of two half laminated - vertical sleepers was the same as the usual sleepers but this resistance in two half laminated - horizontal sleepers was decreased. Finally after five years exposure under extensive service, tests no failures in dowel-laminated sleepers especially in vertical shapes were observed.
format	article
author	Habibalah Arabtabar Abdolrahman Hosseinzadeh Ali Rezanezhad Ghanbar Ebrahimi
author_facet	Habibalah Arabtabar Abdolrahman Hosseinzadeh Ali Rezanezhad Ghanbar Ebrahimi
author_sort	Habibalah Arabtabar
title	INVESTIGATION ON DESIGN AND FABRICATION OF TWO HALF LAMINATED SLEEPERS IN COMPARION WITH CONVENTIONAL TYPE
title_short	INVESTIGATION ON DESIGN AND FABRICATION OF TWO HALF LAMINATED SLEEPERS IN COMPARION WITH CONVENTIONAL TYPE
title_full	INVESTIGATION ON DESIGN AND FABRICATION OF TWO HALF LAMINATED SLEEPERS IN COMPARION WITH CONVENTIONAL TYPE
title_fullStr	INVESTIGATION ON DESIGN AND FABRICATION OF TWO HALF LAMINATED SLEEPERS IN COMPARION WITH CONVENTIONAL TYPE
title_full_unstemmed	INVESTIGATION ON DESIGN AND FABRICATION OF TWO HALF LAMINATED SLEEPERS IN COMPARION WITH CONVENTIONAL TYPE
title_sort	investigation on design and fabrication of two half laminated sleepers in comparion with conventional type
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2001
url	https://doaj.org/article/debb72da1acf4df7bfba4c5d2fd1acf6
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INVESTIGATION ON DESIGN AND FABRICATION OF TWO HALF LAMINATED SLEEPERS IN COMPARION WITH CONVENTIONAL TYPE

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