Monday, October 13, 2008 - forestrynepal.org

Determination of tensile shear strength in Scot pine

Rajendra K.C.'s picture

The lab test conducted to determine the tensile shear strength of Scot pine against longitudinal shear according to EN20-1. The tensile shear strength of Scot pine with two different adhesives i.e. semi structured adhesive such as PVAC (Poly Vinyl Acetate) and structured adhesive i.e. PF (Phenol Formaldehyde) was tested in bonded specimens of Scot pine (Pinus sylvestris L.) sapwood. Altogether 40 specimens (10/10) for each adhesive (and state) were tested in two different (dry and wet) states. The test was conducted in fully automated computer programmed machine named Zwick Z010 / Zwick Roell using testXpert II software. The lab results show that there is similar tensile shear strength between PVAC and PF bonded Scot pine in dry state whereas they differ highly in wet state.

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