SOME PHYSICAL AND MECHANICAL PROPERTIES OF KATHBADAM (Terminalia catappa Linn.) WOOD OF BANGLADESH

Md. Muktarul  Islam; Md. Abul Kalam  Azad; Md.  Ashaduzzaman; Md. Obaidullah  Hannan

doi:10.53808/KUS.2007.8.2.0712-L

Authors

Md. Muktarul Islam Forestry and Wood Technology Discipline, Khulna University, Khulna-9208, Bangladesh
Md. Abul Kalam Azad Forestry and Wood Technology Discipline, Khulna University, Khulna-9208, Bangladesh
Md. Ashaduzzaman Forestry and Wood Technology Discipline, Khulna University, Khulna-9208, Bangladesh
Md. Obaidullah Hannan Forestry and Wood Technology Discipline, Khulna University, Khulna-9208, Bangladesh

DOI:

https://doi.org/10.53808/KUS.2007.8.2.0712-L

Keywords:

Physical properties, mechanical properties, Terminalia catappa, Tectona grandis

Abstract

The present study was undertaken to represent mainly some strength properties of kathbadam (Terminalia catappa Linn.) wood of Bangladesh along with finding out some relevant physical properties of the same. The research works were carried out following standard test methods comparing the findings with those of standard Chittagong teak (Tectona grandis L.f.) reported earlier. The longitudinal, radial, tangential and volumetric shrinkages of T. catappa wood from green to oven-dry conditions were found 0.64%, 2.71%, 5.08% and 8.43% respectively. The specific gravity of the wood species based on oven-dry weight by green volume and oven-dry weight by oven-dry volume were found 0.46 and 0.52 respectively. The green moisture content of T. catappa wood was found 92.51%. Regarding green mechanical properties, the fibre stress at elastic limit and modulus of rupture was found 408.61 and 666.16 kg cm^-2 respectively. Similarly the revealed green compressive strength parallel to grain at elastic limit and at maximum load was 210.54 and 273.74 kg cm^-2respectively. The green tensile strength parallel to grain at maximum load was revealed 438.41 kg cm^-2. At the same moisture conditions the screw withdrawal capacity was determined 187.16 kg at sawn face and 170.53 at edge. All these properties of T. catappa wood were found relatively and reasonably lower than those of Chittagong teak.

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