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<p>The paper assessed some properties of <i>Antrocaryon micraster</i> (Aprokuma) and the variation in its properties axially. The results revealed that more than 5.84% and 12.91% MC were obtained in comparing the top section to its middle and butt sections, respectively. Result of ANOVA indicates a significant effect of tree section on density at 5% level of significance. For shrinkage results, butt section had mean values of 0.07%, 0.13% and 0.92%; and 1.81%, 0.64% and 2.09% less than its middle and top sections along the longitudinal, tangential and radial directional planes, respectively. Shrinkage at the tangential plane was considerably higher than other planes studied. Butt section had the highest MOE, MOR and compressive strength of 7577.74&#xa0;MPa, 55.78&#xa0;MPa and 46.88&#xa0;MPa, respectively than the middle and top sections. The mean values of MOE, MOR and compressive strength decrease within the range of butt to top portion. The butt had better physical and mechanical properties compared to other sections. In a whole, the variation within the sections of <i>Antrocaryon micraster</i> resulted in different strength properties along the tree height.</p>

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Axial variation in the properties of Antrocaryon micraster (Aprokuma)

  • 期刊论文

  • 发表日期：

    2025年2月10日

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  • Emmanuel Appiah-Kubi,
  • Michael Awotwe-Mensah,
  • Peter Kessels Dadzie,
  • Haruna Seidu,
  • Edward Achiaw Owusu,
  • Felix Boakye

摘要

The paper assessed some properties of Antrocaryon micraster (Aprokuma) and the variation in its properties axially. The results revealed that more than 5.84% and 12.91% MC were obtained in comparing the top section to its middle and butt sections, respectively. Result of ANOVA indicates a significant effect of tree section on density at 5% level of significance. For shrinkage results, butt section had mean values of 0.07%, 0.13% and 0.92%; and 1.81%, 0.64% and 2.09% less than its middle and top sections along the longitudinal, tangential and radial directional planes, respectively. Shrinkage at the tangential plane was considerably higher than other planes studied. Butt section had the highest MOE, MOR and compressive strength of 7577.74 MPa, 55.78 MPa and 46.88 MPa, respectively than the middle and top sections. The mean values of MOE, MOR and compressive strength decrease within the range of butt to top portion. The butt had better physical and mechanical properties compared to other sections. In a whole, the variation within the sections of Antrocaryon micraster resulted in different strength properties along the tree height.