SIFAT-SIFAT FISIKA DAN MEKANIKA KAYU KERUING ANDERI ( Dipterocarpus caudiferus Merr ) MENURUT UKURAN DIAMETER POHON DAN LETAK POTONGAN KAYU PADA BATANG

Aan Purnama, Prof.Dr. H. Soenardi Prawirohatmodjo

1994 | Tesis | S2 Ilmu Kehutanan

The study of the physical and mechanical properties of keruing anderi wood (Dipterocarpus caudiferus Merr) was intended: 1. to know the variation of physical and mechanical properties of the wood in diameter class difference including: moisture content, specific gravity, shrinkage, shear parallel to grain, cleavability, tension perpendicular to grain, compression parallel to grain, compression perpendicular to grain, hardness and static bending strength of wood. 2. to know the variation of physical and mechanical properties of the wood from pith to bark and from base to top of the tree. Materials for this study were taken from nine trees, three from diameter class of 40-50 cm, three from 60-70 cm and another three from 80-90 cm, that grew in Meratus slope, P.T. Sumpol Timber area, South Kalimantan. Measurement and testing of the physical and mechanical properties of the wood was carried out using LPHH and ASTM Standards. Results of the study showed that a highly significant differences were found in specific gravity based on ovendry volume and wet volume, radial and tangential shrinkage from wet to ovendry condition, tangential shrinkage from wet to air dry condition, static bending, compression perpendicular to grain and tension perpendicular to grain between diameter class 40-50 cm, and diameter class 60-70 cm and diameter class 80-90 cm.· Physical and mechanical properties of the wood from base to top in diameter class 40-50 cm showed highly significant differences in specific gravity based on wet volume and compression parallel to grain. On the other hand, all physical and mechanical properties of the wood from base to top in diameter class 80-90 cm and 60-70 cm showed a non-significant difference. Physical and mechanical properties of the wood from pith to bark in diameter class 40-50 cm showed highly significant differences in radial and tangential shrinkage from wet to air dry condition and from wet to ovendry condition, moisture content, shear parallel to grain, cleavability, tension perpendicular to grain, hardness, fibre stress at proportional limit and modulus of elastisity. Physical and mechanical properties of the wood from pith to bark in diameter class 60-70 cm showed highly · significant differences in radial and tangential shrinkage from wet to ovendry condition and from wet to air dry condition, specific gravity based on wet volume, ovendry volume and air dry volume, cleavability and compression parallel to grain. On the other hand, the physical and mechanical properties of the wood from pith to bark in diameter class 80-90 cm showed highly significant differences in moisture content, radial shrinkage from wet to ovendry

Kata Kunci : Manajemen Hutan,Kayu Keruing Anderi