Correlation between hardness and density profile of glue-laminated timber manufactured from viscoelastic-thermal compression modified Paraserianthes falcataria laminas

C M Albert and Liew, Kang Chiang (2022) Correlation between hardness and density profile of glue-laminated timber manufactured from viscoelastic-thermal compression modified Paraserianthes falcataria laminas. In: IOP Conference Series: Earth and Environmental Science, 14 - 15 December 2021, Online platform.

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Official URL: https://iopscience.iop.org/article/10.1088/1755-13...

Abstract

A fast-growing tree species, Paraserianthes falcataria, possessed low value in density. Therefore, it was subjected to a densification treatment, i.e., viscoelastic-thermal compression (VTC), to enhance its density and mechanical performance. The objective of this study was to investigate the correlation between the density profile and hardness of VTCmodified glue-laminated timber. The laminas underwent VTC, whereby five different pre-steaming durations were applied, ranging from 0-30 minutes prior to forming into glue-laminated timber panels. The panels were cut into pre-determined test pieces and subjected to density determination using an X-ray densitometer and hardness test in the tangential direction using the ball indentation method. The correlation analysis found that increasing density slightly enhanced the hardness of the tangential surface of the glue-laminated timber test pieces, whereby the Pearson's correlation values, r were .074 (0 minutes, non-densified), .154 (0 minutes, densified), -.027 (10 minutes, densified), .088 (20 minutes, densified), and .225 (30 minutes, densified). Nevertheless, the associations were found to be statistically insignificant because the p-values were greater than 0.05, thus suggesting densification treatment did not enhance hardness.

Item Type:	Conference or Workshop Item (Paper)
Keyword:	Densification , Viscoelastic-thermal compression , Paraserianthes falcataria , Gluelaminated timber
Subjects:	S Agriculture > SD Forestry > SD1-669.5 Forestry
Department:	FACULTY > Faculty of Tropical Forestry
Depositing User:	SAFRUDIN BIN DARUN -
Date Deposited:	27 Sep 2022 12:20
Last Modified:	27 Sep 2022 12:20
URI:	https://eprints.ums.edu.my/id/eprint/34125

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