Strength properties of glued laminated timber made from edge-glued laminae I: strength properties of edge-glued karamatsu (Larix kaempferi) laminae

Fujimoto, Kiyohiko; Hiramatsu, Yasushi; Miyatake, Atsushi; Shindo, Kazutoshi; Karube, Masahiko; Harada, Masaki; Ukyo, Seiichiro

doi:10.1007/s10086-010-1134-1

Cited by 7 publications

(10 citation statements)

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“…7. Sugi composite glulam using sugi structural LVL as the outer layer satisfies the performance required for equivalent-grade conventional sugi glulam [15,16]. 8.…”

Section: Sugi Composite Glulammentioning

confidence: 99%

Recent research and development on sugi (Japanese cedar) structural glued laminated timber

Hayashi

Miyatake

2015

J Wood Sci

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Sugi (Japanese cedar: Cryptomeria japonica) is the most important afforestation species in Japan. Its growing stock has been increasing year by year. Thus, development of new wood products made of sugi has been a national priority for more than two decades. Development of sugi structural glued laminated timber (glulam) was one of the responses to this push. However, in the 1990s, the Japanese glued laminated timber (GLT) industry did not accept sugi as a raw material for glulam, because several problems existed in the wood quality of sugi such as lower strength properties than those of the major imported species. This drawback spurred intensive research on sugi glulam in Japan. The results contributed to the significant revision of the Japanese Agricultural Standard (JAS) for GLT in 2008. The standard permitted the use of various new laminae and products such as a sugi composite GLT beams using different species of laminae with high modulus of elasticity. Although fireproof GLT is not part of the existing JAS for GLT, several fireproof laminated products with 1-h fireproofing performance have been developed since the Japanese Building Standards Law was revised in 2000.

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“…7. Sugi composite glulam using sugi structural LVL as the outer layer satisfies the performance required for equivalent-grade conventional sugi glulam [15,16]. 8.…”

Section: Sugi Composite Glulammentioning

confidence: 99%

Recent research and development on sugi (Japanese cedar) structural glued laminated timber

Hayashi

Miyatake

2015

J Wood Sci

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“…Besides the visual grade, the code includes other grading methods such as ultrasonic and transverse vibration nondestructive methods. The benefits from nondestructive testing (NDT) of laminae on the glulam properties can be seen in several studies (Lee et al 2005, Yang et al 2008, Fugimoto et al 2010). These methods can play an important role in improving the quality and reliability of tropical hardwood as an engineering material.…”

Section: Introductionmentioning

confidence: 98%

Theoretical and experimental deflections of glued laminated timber beams made from a tropical hardwood

Teles

Menezzi

Souza

et al. 2013

Wood Material Science & Engineering

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Nondestructive testing (NDT) can play an important role in improving the quality and reliability of tropical hardwood as an engineering material. By means of these methods, the stiffness of the material can be determined and the information used to improve its structural performance. Although, it is a usual approach for qualifying the material used to manufacture engineered wood products made mainly from softwoods, it is not so common for tropical hardwoods. Additionally, the lack of information regarding properties of glulam beam made from these kinds of wood is evident. In this context, the paper aimed at evaluating the theoretical and experimental deflection of glulam beams made from the Brazilian hardwood lourovermelho (Sextonia rubra). Initially, the stiffness of each lamina was determined nondestructively using transverse vibration method (E dtv ), which has been demonstrated to be the most suitable method for this wood species. Then, ten 5-lamina glulam beams were assembled according to descending lamina E dtv values. The experimental evaluation was performed using a four-point bending schedule. In general, the theoretical values of deflection were 2% higher than the experimental ones. The transverse vibration showed to be a suitable method to both measure lamina stiffness and predict glulam beam deflection.

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“…Studies have been done on how the characteristics of glulam are affected by the reinforcement materials, such as steel bars, flax fiber, carbon fiber, etc. [ 5 , 7 , [10] , [11] , [12] , [13] , [14] , [15] ], finger joint [ 2 , 16 ], glue line [ 17 ], number of layers [ 18 ], and assembly pattern [ 9 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Physical and mechanical properties of Albizia procera glulam beam

Das¹,

Islam²,

Ghosh³

et al. 2023

Heliyon

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Strength properties of glued laminated timber made from edge-glued laminae I: strength properties of edge-glued karamatsu (Larix kaempferi) laminae

Cited by 7 publications

References 0 publications

Recent research and development on sugi (Japanese cedar) structural glued laminated timber

Recent research and development on sugi (Japanese cedar) structural glued laminated timber

Theoretical and experimental deflections of glued laminated timber beams made from a tropical hardwood

Physical and mechanical properties of Albizia procera glulam beam

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