Domination of Grain Bearing on the Strength Properties of Engkabang Jantong as Fast Growing Timber in Sarawak
Publish place: Iranica Journal of Energy and Environment، Vol: 4، Issue: 3
Publish Year: 1392
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJEE-4-3_020
تاریخ نمایه سازی: 1 اردیبهشت 1393
Abstract:
Nowadays, the hardwood category which refers to heavy hardwood species no longer sustains to the market demand. The harvesting of this wood category takes longer period of time. Thus, several studiesin timber engineering have been carried out to investigate the fast-growing indigenous species as thealternative to heavy hardwood categories. For this purpose, fast-growing indigenous species of Engkabang jantong were selected and also the test samples were prepared in small clear specimens. The British Standard, BS373.1957 method of testing small clear specimens of timber was adopted to evaluate the strength propertiesof the species. The strength properties determinations were referred to hardness, cleavage and shear parallelto grain. The results were represented into two different grain directions namely tangential and radial at two different conditions, i.e. green and air-dry condition. It was found that, hardness strength at tangential washigher than radial for both condition green and air-dry with 4.71and 8.86%, respectively. At cleavage strength, it was reported that tangential possessed higher strength values than the radial for both conditions green and air-dry with 23.06 and 27.22%, respectively. Shear strength at tangential was higher than radial for both conditions green and air-dry with 11.70 and 8.58%, respectively
Keywords:
Hardness Cleavage Shear parallel to grain Radial Tangential GreenAir-dry
Authors
Gaddafi Ismaili
Department of Civ il Engineering, Faculty of Engineering,Universiti Malaysia Sarawak, ۹۴۳۰۰ Kota Samarahan, Sarawak, Malaysia
Badorul Hisham Abu Bakar
School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia,۱۴۳۰۰ Nibong Tebal, Pulau Pinang, Malaysia
Alik Duju
Applied Forest Science and Industry Development, Sarawak Forestry Corporation Sdn.Bhd., Lot ۲۱۸, KCLD, Jalan Tapang, Kota Sentosa, ۹۳۲۵۰ Kuching, Sarawak, Malaysia
Khairul Khuzaimah
Protected Areas and Biodiversity Conservation Division, Sarawak Forestry Corporation Sdn Bhd., Lot ۲۱۸, KCLD, Jalan Tapang, Kota Sentosa, ۹۳۲۵۰ Kuching, Sarawak, Malaysia