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Some physical and mechanical properties of thermally modified juvenile and mature black pine wood

Physikalische und mechanische Eigenschaften von thermisch modifiziertem juvenilem und adultem Schwarzkiefernholz

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Abstract

In this study, test samples of juvenile and mature black pine wood were treated for 3 h at temperatures of 140, 170, and 200 °C. Mass loss, density, equilibrium moisture content (EMC), modulus of rupture (MOR), modulus of elasticity, and impact bending strength (IB) of the separate samples were determined. The purpose of the tests was to determine how heat treatment at the three temperatures influenced the properties of the juvenile and mature wood. The results showed that heat treatment had greater effects on mass loss, EMC, and density of juvenile wood than of mature wood. The results also showed that heat treatment had lesser effects on the MOR, modulus of elasticity, and IB of juvenile wood than of mature wood. The results clearly indicated that heat treatment had different effects on the properties of juvenile and mature black pine wood.

Zusammenfassung

In dieser Studie wurden Prüfkörper aus juvenilem und adultem Schwarzkiefernholz bei Temperaturen von 140, 170 und 200 °C für eine Dauer von 3 Stunden behandelt und der Masseverlust, die Dichte, die Gleichgewichtsfeuchte, die Biegefestigkeit, der Elastizitätsmodul und die Schlagbiegefestigkeit wurden bestimmt. Ziel dieser Studie war es, zu ermitteln, inwieweit eine Wärmebehandlung bei den drei Temperaturen die Eigenschaften von juvenilem und adultem Holz beeinflusst. Die Ergebnisse zeigten, dass sich die Wärmebehandlung auf den Masseverlust, die Gleichgewichtsfeuchte und die Dichte von juvenilem Holz stärker auswirkt als bei adultem Holz, wohingegen die Biegefestigkeit, der Elastizitätsmodul und die Schlagbiegefestigkeit bei juvenilem Holz weniger stark beeinflusst wurde als bei adultem Holz. Die Ergebnisse zeigen deutlich, dass sich eine Wärmebehandlung auf die Eigenschaften von juvenilem und adultem Schwarzkiefernholz unterschiedlich auswirkt.

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Authors and Affiliations

  1. Department of Forest Industry Engineering, Faculty of Forestry, Kahramanmaraş Sütçü İmam University, 46100, Kahramanmaraş, Turkey

    Bekir Cihad Bal

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Correspondence to Bekir Cihad Bal.

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Bal, B.C. Some physical and mechanical properties of thermally modified juvenile and mature black pine wood. Eur. J. Wood Prod. 72, 61–66 (2014). https://doi.org/10.1007/s00107-013-0753-9

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  • DOI: https://doi.org/10.1007/s00107-013-0753-9

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