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<p>Forest plantations play a strategic role in climate change mitigation and in supplying renewable raw material for structural applications in civil construction. However, the suitability of fast-growing <i>Eucalyptus</i> clones for sawnwood production depends strongly on their wood quality. This study assessed the morphological characteristics and the physical and mechanical properties of wood from two 8-year-old hybrid clones (<i>Eucalyptus urophylla</i> × <i>E. camaldulensis</i> and <i>Eucalyptus urophylla</i> × <i>E. grandis</i>) planted in Mato Grosso, Brazil, aiming to determine their potential for structural lumber. Both clones showed favorable log morphology, with low conicity (&lt; 1%), moderate pith eccentricity (9–11%), and a high proportion of heartwood (37–41%), indicating good potential for sawnwood recovery. However, clear differences were observed in wood quality. The <i>E. urophylla</i> × <i>E. camaldulensis</i> clone exhibited higher wood density, lower shrinkage, and superior mechanical performance, presenting approximately 18% higher compression strength parallel to grain and 25% higher static bending strength compared with <i>E. urophylla</i> × <i>E. grandis</i>. These differences directly affect end-use performance, indicating that <i>E. urophylla</i> × <i>E. camaldulensis</i> wood is more suitable for structural components subjected to higher mechanical stresses, while <i>E. urophylla</i> × <i>E. grandis</i> shows satisfactory performance for non-structural or lightly loaded applications. The results demonstrate that clone selection is a decisive factor for producing <i>Eucalyptus</i> lumber with targeted structural performance, contributing to the efficient use of fast-grown plantation wood in civil construction.</p>

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Properties of Eucalyptus clonal wood from a tropical region for application in civil construction

  • 期刊论文

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  • 发表日期：

    2026年4月14日

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  • Waldelaine Rodrigues Hoffmann,
  • Camila Mendes Campos,
  • Bárbara Luísa Corradi Pereira,
  • Aylson Costa Oliveira

摘要

Forest plantations play a strategic role in climate change mitigation and in supplying renewable raw material for structural applications in civil construction. However, the suitability of fast-growing Eucalyptus clones for sawnwood production depends strongly on their wood quality. This study assessed the morphological characteristics and the physical and mechanical properties of wood from two 8-year-old hybrid clones (Eucalyptus urophylla × E. camaldulensis and Eucalyptus urophylla × E. grandis) planted in Mato Grosso, Brazil, aiming to determine their potential for structural lumber. Both clones showed favorable log morphology, with low conicity (< 1%), moderate pith eccentricity (9–11%), and a high proportion of heartwood (37–41%), indicating good potential for sawnwood recovery. However, clear differences were observed in wood quality. The E. urophylla × E. camaldulensis clone exhibited higher wood density, lower shrinkage, and superior mechanical performance, presenting approximately 18% higher compression strength parallel to grain and 25% higher static bending strength compared with E. urophylla × E. grandis. These differences directly affect end-use performance, indicating that E. urophylla × E. camaldulensis wood is more suitable for structural components subjected to higher mechanical stresses, while E. urophylla × E. grandis shows satisfactory performance for non-structural or lightly loaded applications. The results demonstrate that clone selection is a decisive factor for producing Eucalyptus lumber with targeted structural performance, contributing to the efficient use of fast-grown plantation wood in civil construction.