Density and mechanical properties of Scots Pine (Pinus sylvestris L.) wood from a seedling seed orchard

• Autorzy: Mederski P. S. , Bembenek M. , Karaszewski Z. , Giefing D. F. , Sulima-Olejniczak E. , Rosińska M. , Łacka A.

Identyfikatory

DOI

10.12841/wood.1644-3985.123.10

• Języki publikacji: EN

Abstrakty

EN

Seedling seed orchard (SSO) growing conditions are different to those in the forest. Trees grow in wide spacing with more access to sunlight and competition between trees is less intense causing larger annual rings and limited height growth. The objective of this research was to: 1) determine the density and mechanical properties of Scots pine (Pinus sylvestris L.) wood grown in an SSO and 2) suggest the most suitable use of this wood. Five trees (25-year-old) were selected using the Urich II method. Final samples (from the height of dbh) were cut from pith to bark, in the four cardinal directions. From all five trees, 159 samples were used to determine: 1) the wood density, 2) the compressive strength parallel to the grain, 3) the modulus of rupture, and 4) the strength quality coefficient. For each property the following mean values were obtained: 327 kg m-3, 32 MPa, 59 MPa and 0.10, respectively. The density did not depend on the dbh or mean width of annual ring. At the same time, the mechanical properties depended strongly on the wood density. In all cases, the wood property values of the Scots pine from the SSO were lower in comparison with those published for Scots pine grown in regular stand conditions. Therefore, pine wood from SSOs should be used in the paper industry.

Słowa kluczowe

EN

compressive strength; modulus of rupture; strength quality coefficient

• Wydawca: Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
• Czasopismo: Drewno : prace naukowe, doniesienia, komunikaty
• Rocznik: 2015
• Tom: vol. 58, nr 195
• Strony: 117--124
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Mederski P. S.

• Department of Forest Utilisation, Poznań University of Life Sciences, Poznań, Poland

autor

Bembenek M.

• Department of Forest Utilisation, Poznań University of Life Sciences, Poznań, Poland

autor

Karaszewski Z.

• Wood Science and Application Department, Wood Technology Institute, Poznań, Poland

autor

Giefing D. F.

• Wood Science and Application Department, Wood Technology Institute, Poznań, Poland

autor

Sulima-Olejniczak E.

• Department of Forest Utilisation, Poznań University of Life Sciences, Poznań, Poland

autor

Rosińska M.

• Department of Forest Utilisation, Poznań University of Life Sciences, Poznań, Poland

autor

Łacka A.

• Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, Poznań, Poland

Bibliografia

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• List of standards
• UNI-ISO-3131 Wood. Determination of density for physical and mechanical tests
• UNI-ISO-3133 Wood. Determination of ultimate strength in static bending
• UNI-ISO-3787 Wood. Determination of ultimate stress in compression parallel to grain