Performance of Six-Layered Cross Laminated Timber of Fast-Growing Species Glued with Tannin Resorcinol Formaldehyde

The aim of this study were to evaluate tannin resorcinol formaldehyde (TRF) for the preparation cross-laminated timbers (CLTs) made from fast-growing tree species and analyze physical mechanical properties CLTs. TRF copolymer resin was prepared by using bark extracts Swietenia mahagoni (L.) Jacq. It observed that adhesive possessed less solid content (23.59%), high viscosity (11.35 poise), pH values (10.0) compared standard phenol formaldehyde. applied produce CLTs with addition 15% tapioca flour as an extender. six-layered produced sengon (Falcataria moluccana Miq.), jabon [Anthocephalus cadamba (Roxb) Miq.], coconut (Cocos nucifera L.), combination coconut-jabon coconut-sengon wood. analysis variance revealed layer composition CLT significantly affected beam. While modulus rupture met standard, moisture elasticity did not fulfill JAS 1152-2007. All in demonstrated low emission, ranging 0.001 mg/L 0.003 mg/L, thereby satisfying 1152 structural glue laminated timber.