Effects of manufacturing parameters on properties of rubberwood-cross laminated timber manufactured via hot pressing. (December 2021)

• Record Type: Journal Article
• Authors: Srivaro, Suthon; Leelatanon, Satjapan; Setkit, Monthian; Matan, Nirundorn; Khongtong, Sureurg; Jantawee, Sataporn; Tomad, Jaipet
• Is Part Of: Journal of building engineering. Volume 44(2021)
• Publication Date: 2021-12
• Subjects: Rubberwood -- Manufacturing parameters -- Properties -- Cross-laminated timber (CLT) -- Hot pressing; Building -- Periodicals; 690.05
• DOI: 10.1016/j.jobe.2021.102703
• Languages: English
• ISSNs: 2352-7102

Abstract

Abstract: In this study, cross-laminated timber (CLT) was manufactured from rubberwood via hot pressing. The effects of manufacturing parameters, such as resin content and clamping pressure, on the following properties of CLT panels were investigated: density (ρ), water absorption (WA), thickness swelling (TS), bonding strength (BS), compressive strength in the major strength direction of CLT (σmajor ), compressive strength in the direction perpendicular to the flat plane of CLT (σFlat )), and rolling shear strength (RS). The relationships among the properties of the CLT panel, those the original rubberwood material, and the manufacturing parameters was also explored. The results showed that the resin content and clamping pressure did not significantly affect most of the examined properties of the CLT panels. The ρ, WA, σmajor, σFlat, and RS of the panels could be estimated directly from the properties of the original rubberwood, while the TS could be estimated directly from the clamping pressure applied on the panel. However, no such relationship was found for the BS value. Compared with typical softwood-CLT, the rubberwood-CLT exhibited superior mechanical properties. This implies that CLT made of rubberwood can achieve better structural performance than standard CLT can. Highlights: Cross laminated timber (CLT) was manufactured from rubberwood via hot pressing. Effect of manufacturing parameters on properties of the produced CLT was explored. The manufacturing parameters did not affect most of the examined properties of CLT. Some properties of CLT could be estimated directly from original wood properties. Thickness swelling of CLT could be estimated directly from clamping pressure.