Utilization Improvements on jati Plus Perhutani (JPP) as GluedLaminated Timber

Jati plus Perhutani (]PP) reveals one of thefast-growing teak (fectonagrandis) varieties which have been developed through the tissue culture to enhance supply capability of teak woodfrom teakplantation. Information about fastgrowing teak wood (including JPP)isstill limited. As the relevance, this attempt tried to experimentally improve the inferioriry of JPP wood at 9years age. &suits showed that the JPP in size was categorized as small diameterwood (KBK, A.I), and in dt1;tibiiiry msceptiblelo dry-wood termites(Cryptoterme scynocephalus)and subterranean termite (Coptoterrnes curvignathus).The JPP after being treated with particular preservatives, improved its durabiliryclass remarkably. To impart added value of JPP wood and lo utilize it as efftciently as possible the jPP after being treated with borax preservative or tlntreated was shaped into lamina with and with out finger-joint connection, and then assembled to gltlelaminated beam (glulam)t1singthe mixture ofphenol-resorcinol formal deflyde and urea formaldefly deadhesive. It turned outhat the strength and mechanica lproperties of thegitllam was not afftcted qy thefinger-jointedand qy borax-treating, exceptcompressive strength parallel to thegrain (in thelengthwise direction ofgltilam) and stiffness (MOE).