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Effect of Waterlogged Condition on Wood Properties of Acacia Nilotica (l.) Debile Tree.

J. Alam
Forestry and Wood Technology Discipline, Khulna University, Khulna-9208, Bangladesh.

A. K. Das
Pulp and Paper Technology, Asian Institute of Technology, Klong Luang, Pathumthani-12120, Thailand.

M. A. Islam
Forestry and Wood Technology Discipline, Khulna University, Khulna-9208, Bangladesh.

M. M. Rahman
Forestry and Wood Technology Discipline, Khulna University, Khulna-9208, Bangladesh.

Abstract/ Executive Summary:

This study is aimed to assess the mechanical and physical properties of waterlogging Acacia nilotica (babla). The important physical and mechanical properties were determined. The oven dry density of the wood of waterlogged tree and non-waterlogged tree was 780 and 850 kg/m³. The MOR of the wood of waterlogged tree was 117N/mm² while non-waterlogged tree showed the value of MOR 127N/mm². The MOE of the wood of waterlogged tree and non-waterlogged tree was 1880 and 1950 N/mm2 respectively. The study of properties on A. nilotica wood grown in different conditions will help to choose the right type of its wood for suitable purposes.

Keywords: Acacia nilotica, Waterlog, Non-waterlog, Physical properties, Mechanical properties

Location: Satkhira district of Bangladesh.

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Akash moni

Objectives:

To determine the physical and mechanical properties of A. nilotica of waterlogged and non-waterlogged area.

Methodology:

Acacia nilotica is planted all over Bangladesh. Four trees of 15 years old were collected from Dhalbari in Tala upazila (22⁰76/ N and 89⁰21/ E) in Satkhira district, Bangladesh. The trees were fairly straight and free from natural defects. Two of them were taken from waterlogged and rest two were selected from non-waterlogged region. After felling, each bole was cut into 1.5m logs. Samples were collected from three different heights, i. e., the base, middle, and top. In each case, the specimens were collected from near the center of the log avoiding the pith, which ensured that specimens were made mostly from heartwood because heartwood is usually specified for commercial timber. ASTM D 1037-100 standard procedures were followed to determine the physical properties. Mechanical properties were accomplished by DIN 52362. Physical and mechanical properties were done for each portion of each type of the tree. The results are reported in average for each property to conclude the findings. The data obtained during the laboratory test were analyzed for the depiction of physical and mechanical properties.

Source of Information: Bangladesh J. Sci. Ind. Res. 50(2), 71-76, 2015

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The wood of A. nilotica has a great value for making different types of agricultural instruments and vehicle parts. The properties of the wood vary according to environmental and genetic factors. Knowledge of the properties helps to use the wood properly. This study showed that the mechanical and physical wood properties of A. nilotica grown in waterlogging condition were slightly lower than those of non-waterlogging condition. Further study is required to find out the variation of minute structures of wood of A. nilotica grown in different environment.

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