SIFAT FISIS DAN MEKANIS KAYU JATI SUPER DAN JATI LOKAL DARI BEBERAPA

Abstract

Research on properties of local and super teak woods (Tectona grandis L.f.) grown in Binjai, Maros, Parung, Panajam, Kutai, Lampung, Bengkulu and Palembang were done to investigate the effect to its physical and mechanical characteristics. The result showed that specific gravity of super teak wood is higher than local teak wood. The highest specific gravity was found on super teak wood from Binjai and the lowes on that from Maros, Sulawesi. Type of teak wood, local and super, are significantly affected the green specific gravity, but plantation areas do not affect the specific gravity. Local teak wood from Palembang is the strongest among the woods tested, followed by super teak wood from Lampung, local teak wood from Kutai, super teak wood Bengkulu, super teak wood from Kutai, local teak wood from Binjai, super teak wood from Palembang, local teak wood from Lampung, local teak wood from Sulawesi and the weakest is super teak wood from Sulawesi. The types of teak wood only affect the compression parallel to the grain, while plantation areas effect modulus elasticity and modulus of rupture. Refering to Indonesian Wood Strength Classification, all teak woods tested are grouped as class III-IV.