Document Type : Research Paper

Authors

• Fardad Golbabaei ¹
• Hossein Hosseinkhani ²
• Abolfazl Kargarfard ³
• Amir Nourbakhsh ⁴
• Reza Hajihassani ⁵

¹ Wood and Forest Products Science Research Division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO) P.O. Box 13185-116, Tehran, Iran

² Wood Science & Forest Products Research Division Research Institute of Forests & Rangelands Tehran, Iran

³ Wood and Forest Products Science Research Division, Research Institute of Forests and Rangelands, Tehran, Iran,

⁴ Wood and forest products division, Research Institute of Forests and Rangelands, Agricultural Resear

⁵ PhD, Wood and forest products division, Research Institute of Forests and Rangelands, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran

Abstract

The major engineering properties of Pinus taeda L. wood growing in different regions of Caspian forests (North of Iran) was determined. Test materials were selected randomly from Pinus teada tree plantation and the test specimens were prepared according to ASTM D-143 standard. Mechanical and physical properties were measured on both green and air-dried samples (12% moisture content). The results of the measurement were statistically analyzed based on randomized block design and factorial experiment. The influence of specimen locations at different stem heights was examined. Based on the results of this study, statistically significant difference of the measured properties was not observed between the samples collected from different regions. Toughness was not influenced by moisture content, but the compression strength perpendicular to the grain of wet and air-dry specimens was not similar. Mechanical properties of Pinus teada wood grown in Iran is generally of lower quality compare to those in their original habitat.

Keywords

• Pinus taeda
• PHYSICAL
• mechanical
• properties