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All Journal Agrifor : Jurnal Ilmu Pertanian dan Kehutanan JURNAL ATOMIK PERENNIAL ULIN: Jurnal Hutan Tropis Akar (Aspirasi Karya Anak Rimba) : Jurnal Ilmiah Hutan & Kehutanan Jurnal Multidisiplin Madani (MUDIMA)
Irvin Dayadi
Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Energy Environmental Science Industrial & Manufacturing Engineering Social Sciences

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Journal : PERENNIAL

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KETAHANAN API KAYU SENGON (Paraserianthes falcataria (L.) Nielsen) YANG DIAWETKAN DENGAN BAHAN PENGAWET BORAKS: Fire Resistance Of Sengon (Paraserianthes Falcataria (L.) Nielsen) Preserved With Borax IRVIN DAYADI
PERENNIAL Vol. 17 No. 1 (2021): Vol. 17 No. 1, April 2021
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v17i1.13650

Abstract

Woods are easy to ignite by fire. Increasing fire resistance with fire retardants is needed to increase safety and reduce losses due to fire. This research aimed to determine the fire resistance of Sengon wood treated with preservation of borax with a concentration of 5%, 10%, and 15% by cold immersion for five days. The fire resistance test used the ASTM E69-02 standard, while the statistical analysis (ANOVA) of the test data used a Completely Randomized Design at the 95% confidence level and the LSD test (Least Significant Difference test). The results showed of the physical properties of Sengon wood, the average value of air-dry moisture content was 14.08%, air-dry density was 0.33g/cm3, and oven-dry density was 0.30g/cm3.  In contrast, the LSD test showed a significant difference between the controls to the all-borax preservation treatments, but between 5%, 10%, and 15% borax treatments were not significantly different. The best fire resistance parameter values ​​were found in the 15% borax treatment, with the retention of 38.04 kg/m3, burning intensity 12.58%, combustion time 437.5 seconds, and effectiveness of 4.76. The fire resistance effectiveness value of all equipment cannot meet the ASTM E69-02 standard
Keteguhan Rekat Geser dan Keteguhan Lengkung Statis Kayu Laminasi dari Kayu Pinus (Pinus merkusii Jungh et de Vr.) dan Kayu Sengon (Paraserianthes falcataria (L) Nielsen) Berperekat Melamins Urea Formaldehida (MUF): The Shear Bond and Bending Strength of Laminated Wood From Pine Wood (Pinus merkusii Jungh et de Vr.,) and Sengon Wood (Paraserianthes falcataria (L) Nielsen) Glued With Melamine Urea Formaldehyde (MUF) DAYADI, IRVIN
PERENNIAL Vol 20 No 1 (2024): Vol. 20 No. 1, April 2024
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v20i1.33966

Abstract

Laminated wood's strength properties are influenced by the arrangement of each layers. This research aims to determine the effect of variations in layers of laminated wood to the shear bond strength, modulus of elasticity (MoE) and modulus of rupture (MoR) of laminated wood from Pine (P) and Sengon (S) wood using melamine urea formaldehyde adhesive (MUF). Laminated wood is tested using German standards DIN (Deutsches Intitut fur Normung), JAS 234-2007 and SNI 7973-2013. The data testing from 6 layer variation treatments were analyzed of variance in a completely randomized design (CRD) with 10 replications. The highest average value of shear bond strength for laminated wood in treatment G2 (Sengon-Sengon) was 6.17 N/mm2 which met the JAS 234-2007 standard (>5.4 N/mm2) while treatment G3 (Pine-Sengon) was 4.04 N/mm2 and G1 (Pine-Pine) of 2.78 N/mm2 cannot meet the standard. The highest average MoE was at A5 (P-S-S-P-P) at 8584.27 N/mm2 and the lowest at A3 (P-S-P) at 6210.99 N/mm2 included quality codes E8 and E6 in the SNI 7973-2013 Standard. The highest average MoR was at A4 (P-S-S-S-P) at 73.23 N/mm2 and the lowest at A5 (P-S-S-P-P) at 61.98 N/mm2, all treatments included quality code E25 (>25 N/mm2) and could meet JAS 234-2007 Standards (>36.0 N/mm2). The laminated wood in this study based on MoR is included to the strength class III – II and located between the strength class of Pine wood (strength class II) and Sengon wood (strength class III).    
Pengaruh Tekanan Kempa Terhadap Keteguhan Lengkung Statis Pada Sambungan Menjari Kayu Meranti Merah (Shorea sp.) Dengan Perekat Polivinil Asetat (PVAc) DAYADI, IRVIN
PERENNIAL Vol 20 No 2 (2024): Vol. 20 No. 2, Oktober 2024
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v20i2.40340

Abstract

The joint of glued laminated wood with adhesive is widely used and affects the static bending strength value in its use. The compression pressure is one of the critical factors in the gluing of joints. This research aims to determine the effect of variations in compression pressure on the static bending strength of finger-jointed red meranti (Shorea sp.) wood glued with an exterior type of polyvinyl acetate (PVAc) adhesive in Synteco brand. The static bending strength testing referred to the German standard DIN (Deutsches Intitut fur Normung) DIN 52186-78. The data from 3 treatments of compressive pressure variations (2 bar, 2.5 bar, and 3 bar) were analyzed for variation in a completely randomized design (CRD) with 20 replications. The research results showed that the highest static bending strength of finger-jointed Shorea sp. was found at a compression pressure of 3 bar (P3), in which its modulus of elasticity (MoE) was 9,975.53 N/mm2 and the modulus of rupture (MoR) was 60.77 N/mm2. The MoE and MoR of the finger-jointed wood were still lower than its control (without joints), in which MoE was 10,017.07 N/mm2 and MoR was 82.07 N/mm2.
Co-Authors Ayuningtyas, Ika Nurwidya Cristianus Renaldy Karmini Karmini Karyati Karyati Kusno Yuli Widiati Nyurang, Fitus Taruli, Magdalena M Utomo, Riko Birau Widiati, Kusno Yuli Zainul Arifin Zainul Arifin