TY - JOUR AU - Hariz, Tengku Muhammad Renzy AU - Hadi, Yusuf Sudo AU - Lubis, Muhammad Adly Rahandi AU - Maulana, Muhammad Iqbal AU - Sari, Rita Kartika AU - Hidayat, Wahyu PY - 2023/01/06 Y2 - 2024/03/28 TI - Physical and Mechanical Properties of Cross-Laminated Timber Made of a Combination of Mangium-Puspa Wood and Polyurethane Adhesive JF - Jurnal Sylva Lestari JA - J. Sylva Lestari VL - 11 IS - 1 SE - Articles DO - 10.23960/jsl.v11i1.645 UR - https://sylvalestari.fp.unila.ac.id/index.php/JHT/article/view/645 SP - 37-65 AB - <p>This study aimed to evaluate the physical and mechanical properties of cross-laminated timber (CLT) characteristics from mangium (<em>Acacia mangium</em>) and puspa (<em>Schima wallichii</em>) woods and their combination using polyurethane (PU 1.2) adhesives. The manufacture of CLT began with basic adhesive characterization and thermo-mechanical analysis. Wood material’s physical and chemical properties were also tested with its response to the PU 1.2 wettability. The CLT (100 ´ 30 ´ 3.60) cm<sup>3</sup> was manufactured with 160 g/m<sup>2</sup> glue spread at a pressure of 0.80 MPa for 200 minutes. The CLT panels were characterized refers to the JAS 3079  standard. The results show that PU 1.2 had a gelatination time of 182.1 minutes at 25°C, was able to form urethane groups, and experienced an increase in storage modulus at 35°C. Mangium and puspa woods have different physical and chemical properties, but they interact similarly with PU 1.2 wettability. Puspa CLT panel has a higher density than mangium but lower dimensional stability. The bending mechanical properties of hybrid puspa-mangium-puspa CLT were able to match puspa CLT and have one sample of shear strength that met the JAS 3079 standard in both grain directions. Therefore, hybrid puspa-mangium-puspa CLT has the potential to be developed to improve its dimensional stability and mechanical properties.</p><p>Keywords: <em>Acacia mangium</em>, cross-laminated timber, layer combination, polyurethane adhesive, <em>Schima wallichii</em></p> ER -