Influence of technical characteristics on the rolling shear properties of cross laminated timber by modified planar shear tests

Abstract: Rolling shear properties of cross laminated timber are important mechanical properties for its structural application. To evaluate the influence of technical characteristics such as edge-gluing and gap size in the cross layers, on the measurement of rolling shear modulus and strength of cr...

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Autores principales:	Wang,Zhiqiang, Zhou,Jianhui, Dong,Weiqun, Yao,Yue, Gong,Meng
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2018
Materias:	Edge-gluing Fir gap size mechanical properties Pine Spruce strength.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000300469
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spelling	oai:scielo:S0718-221X20180003004692018-09-26Influence of technical characteristics on the rolling shear properties of cross laminated timber by modified planar shear testsWang,ZhiqiangZhou,JianhuiDong,WeiqunYao,YueGong,Meng Edge-gluing Fir gap size mechanical properties Pine Spruce strength. Abstract: Rolling shear properties of cross laminated timber are important mechanical properties for its structural application. To evaluate the influence of technical characteristics such as edge-gluing and gap size in the cross layers, on the measurement of rolling shear modulus and strength of cross laminated timber, three-layer spruce-pine-fire cross laminated timber shear block specimens with and without edge-gluing, with gaps of 2 mm, 4 mm and 6 mm, were tested by a modified planar shear test method. The mean values of rolling shear strength and modulus of No. 2 visual grade spruce-pine-fire cross laminated timber were 1,32 MPa and 111 MPa with coefficients of variance of 20% and 28%, respectively, regardless of technical characteristics. The characteristic rolling shear strength of all groups of three-layer cross laminated timber specimens was determined to be 0.88 MPa. The results indicated that the rolling shear strength and modulus values used in current design practice of spruce-pine-fire cross laminated timber were conservative. It was found that edge-gluing and gap size had a significant influence on measuring rolling shear strength rather than apparent rolling shear modulus by the modified planar shear test method. With the gap size larger than 2 mm, its influence on measuring rolling shear strength became negligible. The three major initial failure modes identified for the cross layer regardless of technical characteristics were rolling shear failure along the growth ring, tension perpendicular to grain failure in wood pith and tension perpendicular to grain failure along the wood ray.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.20 n.3 20182018-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000300469en10.4067/S0718-221X2018005031601
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Edge-gluing Fir gap size mechanical properties Pine Spruce strength.
spellingShingle	Edge-gluing Fir gap size mechanical properties Pine Spruce strength. Wang,Zhiqiang Zhou,Jianhui Dong,Weiqun Yao,Yue Gong,Meng Influence of technical characteristics on the rolling shear properties of cross laminated timber by modified planar shear tests
description	Abstract: Rolling shear properties of cross laminated timber are important mechanical properties for its structural application. To evaluate the influence of technical characteristics such as edge-gluing and gap size in the cross layers, on the measurement of rolling shear modulus and strength of cross laminated timber, three-layer spruce-pine-fire cross laminated timber shear block specimens with and without edge-gluing, with gaps of 2 mm, 4 mm and 6 mm, were tested by a modified planar shear test method. The mean values of rolling shear strength and modulus of No. 2 visual grade spruce-pine-fire cross laminated timber were 1,32 MPa and 111 MPa with coefficients of variance of 20% and 28%, respectively, regardless of technical characteristics. The characteristic rolling shear strength of all groups of three-layer cross laminated timber specimens was determined to be 0.88 MPa. The results indicated that the rolling shear strength and modulus values used in current design practice of spruce-pine-fire cross laminated timber were conservative. It was found that edge-gluing and gap size had a significant influence on measuring rolling shear strength rather than apparent rolling shear modulus by the modified planar shear test method. With the gap size larger than 2 mm, its influence on measuring rolling shear strength became negligible. The three major initial failure modes identified for the cross layer regardless of technical characteristics were rolling shear failure along the growth ring, tension perpendicular to grain failure in wood pith and tension perpendicular to grain failure along the wood ray.
author	Wang,Zhiqiang Zhou,Jianhui Dong,Weiqun Yao,Yue Gong,Meng
author_facet	Wang,Zhiqiang Zhou,Jianhui Dong,Weiqun Yao,Yue Gong,Meng
author_sort	Wang,Zhiqiang
title	Influence of technical characteristics on the rolling shear properties of cross laminated timber by modified planar shear tests
title_short	Influence of technical characteristics on the rolling shear properties of cross laminated timber by modified planar shear tests
title_full	Influence of technical characteristics on the rolling shear properties of cross laminated timber by modified planar shear tests
title_fullStr	Influence of technical characteristics on the rolling shear properties of cross laminated timber by modified planar shear tests
title_full_unstemmed	Influence of technical characteristics on the rolling shear properties of cross laminated timber by modified planar shear tests
title_sort	influence of technical characteristics on the rolling shear properties of cross laminated timber by modified planar shear tests
publisher	Universidad del Bío-Bío
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2018000300469
work_keys_str_mv	AT wangzhiqiang influenceoftechnicalcharacteristicsontherollingshearpropertiesofcrosslaminatedtimberbymodifiedplanarsheartests AT zhoujianhui influenceoftechnicalcharacteristicsontherollingshearpropertiesofcrosslaminatedtimberbymodifiedplanarsheartests AT dongweiqun influenceoftechnicalcharacteristicsontherollingshearpropertiesofcrosslaminatedtimberbymodifiedplanarsheartests AT yaoyue influenceoftechnicalcharacteristicsontherollingshearpropertiesofcrosslaminatedtimberbymodifiedplanarsheartests AT gongmeng influenceoftechnicalcharacteristicsontherollingshearpropertiesofcrosslaminatedtimberbymodifiedplanarsheartests
_version_	1714202661963694080

Influence of technical characteristics on the rolling shear properties of cross laminated timber by modified planar shear tests

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