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Abstract
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Article Information:
Characterization of Physical and Mechanical Properties of Branch, Stem and Root Wood of Iroko and Emire Tropical Trees
M. Amoah, J. Appiah-Yeboah and R. Okai
Corresponding Author: M. Amoah
Submitted: January 16, 2012
Accepted: February 09, 2012
Published: February 09, 2012 |
Abstract:
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This study investigated the physical and mechanical properties of branch, stem and root wood of
iroko (Milicia excelsa) and emire (Terminalia ivorensis). The basic density, MOE and MOR were determined
in accordance with BS 373:1957. Fifty samples from the wood types of each species were used for each test.
The study showed that the root wood of iroko and emire exhibited the highest basic density of 760 and 620
kg/m3, respectively, while the basic densities of the branch and stem wood of emire (537 kg/m3) were
comparable. The differences in the MOE values among the wood types of iroko and emire were found to be
statistically insignificant. The MOR value of the branch wood of emire (73 MPa) was found to be significantly
higher than that of the stem wood (71 MPa). However, there was no significant difference between the MOR
values of the branch and stem wood of iroko (67 MPa). Basic density of all wood types was found to be a good
predictor of MOE in static. With exception of the root wood of emire, significant but low correlations were
found for the regression relationships between MOE and MOR. For the emire stem wood, MOE explained
about 41% of the variation in the MOR of that wood type. The study concludes that it is possible to substitute
the branch and root wood of iroko and emire for stem wood in many applications.
Key words: Basic density, compression parallel to grain, density, modulus of elasticity, modulus of rupture, utilization,
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Cite this Reference:
M. Amoah, J. Appiah-Yeboah and R. Okai, . Characterization of Physical and Mechanical Properties of Branch, Stem and Root Wood of Iroko and Emire Tropical Trees. Research Journal of Applied Sciences, Engineering and Technology, (12): 1755-1761.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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