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Assessment on Bonding Strength of Cross Laminated Timber Made from Light Red Meranti Manufactured by Vacuum Press Method
Cross laminated timber (CLT) is acknowledged to be a high-performance composite material used in the construction industry. The manufacturing of CLT in temperate countries is well established and has been proven to have high mechanical properties compared to solid wood. However, to date, the production of CLT from tropical hardwood is still not available. There are a lot more studies that need to be done particularly regarding bonding quality which contribute to the strength performance of CLT. High temperature and humidity as well as the uniqueness of the tropical hardwood anatomic structure greatly affects adhesion and the mechanical properties of the CLT panels. Thus, the aim of this study is to assess the bonding strength of the CLT panels made in an industrial-scale from tropical hardwood namely, Light Red Meranti. In this study, three and five layer CLT panels with dimensions of 6.5 m length × 2.2 m width were manufactured by the vacuum press method in accordance with EN 16351. In order to assess the bonding strength, 340 pieces of block samples were taken at various locations from these two panels to represent the entire CLT panel. These block samples were examined under dry and wet conditions in accordance with EN 16351 and EN 14374, respectively. The characteristic value of shear strength was determined based on EN 14358 and wood failure percentage (WFP) was observed and recorded for each block sample. The results show that the bonding performance of five layers CLT was good in dry condition and met the requirement stated in EN 16351 since the characteristic shear strength is ≥ 1.25 N/mm2 and the average of WFP is ≥ 70%.
Assessment on Bonding Strength of Cross Laminated Timber Made from Light Red Meranti Manufactured by Vacuum Press Method
Cross laminated timber (CLT) is acknowledged to be a high-performance composite material used in the construction industry. The manufacturing of CLT in temperate countries is well established and has been proven to have high mechanical properties compared to solid wood. However, to date, the production of CLT from tropical hardwood is still not available. There are a lot more studies that need to be done particularly regarding bonding quality which contribute to the strength performance of CLT. High temperature and humidity as well as the uniqueness of the tropical hardwood anatomic structure greatly affects adhesion and the mechanical properties of the CLT panels. Thus, the aim of this study is to assess the bonding strength of the CLT panels made in an industrial-scale from tropical hardwood namely, Light Red Meranti. In this study, three and five layer CLT panels with dimensions of 6.5 m length × 2.2 m width were manufactured by the vacuum press method in accordance with EN 16351. In order to assess the bonding strength, 340 pieces of block samples were taken at various locations from these two panels to represent the entire CLT panel. These block samples were examined under dry and wet conditions in accordance with EN 16351 and EN 14374, respectively. The characteristic value of shear strength was determined based on EN 14358 and wood failure percentage (WFP) was observed and recorded for each block sample. The results show that the bonding performance of five layers CLT was good in dry condition and met the requirement stated in EN 16351 since the characteristic shear strength is ≥ 1.25 N/mm2 and the average of WFP is ≥ 70%.
Assessment on Bonding Strength of Cross Laminated Timber Made from Light Red Meranti Manufactured by Vacuum Press Method
Lecture Notes in Civil Engineering
Belayutham, Sheila (editor) / Che Ibrahim, Che Khairil Izam (editor) / Alisibramulisi, Anizahyati (editor) / Mansor, Hazrina (editor) / Billah, Muntasir (editor) / Nordin, M. S. (author) / Norshariza, M. B. (author) / Lum, W. C. (author) / Zainal, N. S. (author) / Ahmad, Z. (author)
International Conference on Sustainable Civil Engineering Structures and Construction Materials ; 2020
2022-04-07
14 pages
Article/Chapter (Book)
Electronic Resource
English
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