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Journal : Jurnal Rimba Lestari

SIFAT FISIKA PAPAN SEMEN PARTIKEL DARI SERBUK GERGAJI KAYU KEMPAS (Koompasia malaccensis Maing) Arniwati; Wulandari, Febriana Tri; Lestari, Andi Tri
JURNAL RIMBA LESTARI Vol 2 No 2 (2022): Vol. 2 No. 2 (2022)
Publisher : Jurusan Kehutanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/rimbalestari.v2i2.4

Abstract

The increasing demand for wood and the diminishing potential of forests necessitate the efficient and prudent use of wood resources. To address this issue, alternatives to wood are required, and one such option is particleboard made from wood sawdust. The abundance of waste sawdust from kempas wood (Koompassia malaccensis Maing) is noteworthy, yet this waste material remains underutilized. The objective of this research is to determine: i.) the influence of the particle-to-cement ratio, ii.) the effect of different compressive pressures on the physical properties of kempas wood sawdust particleboard, and iii.) the interaction between the particle-to-cement ratio and compressive pressure on the physical properties of kempas wood sawdust particleboard. In this study, a factorial completely randomized design with two factors was employed. The first factor is the particle-to-cement ratio (P), consisting of three levels: P1 (1:3), P2 (1:4), and P3 (1:5). The second factor is the difference in compressive pressure (T), comprising two levels: T1 (25 kg/cm²) and T2 (35 kg/cm²). There are a total of 6 treatments resulting from the combination of these two factors, repeated three times, and yielding 18 test samples. The results indicate that the ratio of cement to particles only significantly affects density at a significance level of 0.05 but does not impact moisture content and thickness swelling of kempas wood sawdust particleboard. The variation in compressive pressure does not influence any of the physical properties (density, moisture content, and thickness swelling) of the particleboard. Furthermore, the interaction between the particle-to-cement ratio and compressive pressure does not significantly affect any of the physical properties (density, moisture content, and thickness swelling) of kempas wood sawdust particleboard.
VARIASI ARAH AKSIAL TERHADAP SIFAT FISIKA DAN MEKANIKA KAYU MINDI(Melia azedarach Linn.) DARI DESA SENANGGALIH KABUPATEN LOMBOK TIMUR Putri; Wulandari, Febriana Tri; Lestari, Andi Tri
JURNAL RIMBA LESTARI Vol 3 No 1 (2023): Vol. 3 No. 1 (2023)
Publisher : Jurusan Kehutanan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The demand for commercial timber in Indonesia continues to rise, while the availability of forest resources is steadily declining, both in terms of production forest area and wood quality. Many native wood species remain underutilized in the Indonesian wood industry due to limited information regarding their properties. One such species, Mindi wood (Melia azedarach Linn.), has been used by local communities but is not widely recognized as a commercial timber alternative. Mindi wood holds potential as a substitute for high-quality commercial timber; however, research on its physical and mechanical properties remains scarce. This study aims to evaluate the axial variation in the physical and mechanical properties of Mindi wood from Senanggalih Village, East Lombok Regency, and to assess the influence of axial position on these properties. The study employed a non-factorial Completely Randomized Design (CRD) with three axial sections (base, middle, and top) as treatments, each replicated three times. Results indicated that axial position significantly affected certain physical properties, including kiln-dry specific gravity, radial shrinkage (from fresh to kiln-dry), and longitudinal swelling (from air-dry to wet). However, no significant effect was observed on moisture content (fresh air or air-dry), fresh specific gravity, air-dry density, or shrinkage and swelling in the tangential, radial, and longitudinal directions for various moisture conditions. In terms of mechanical properties, no significant effect of axial position was found on Modulus of Elasticity (MoE) and Modulus of Rupture (MoR). These findings suggest that Mindi wood is suitable for light construction applications such as furniture manufacturing, as well as for composite wood products including plywood, particleboard, and fiberboard.