Abstract

In the present study, black pine samples laminated with epoxy and polyurethane glues were treated with various wood preservative chemicals and made subject to seawater for one year. The samples were examined from the point of view of physical features such as changes in odor and color as well as their mechanical values in 3-month periods. For this purpose, the samples were made subject to bending tests perpendicular to the fibers, compression tests parallel to the fibers and adhesion tests. As a result of this study, it was observed that, non-impregnated samples were excessively decayed and they were so decomposed and destroyed that they could not be used anymore within the first 6 months. It was determined that, sea insects nested on the said samples and began to live there, sea worms destroyed the wooden surfaces by drilling them, the said surfaces were covered with seaweed, the surfaces became extremely soft and there were white decays on some regions. In case of impregnated samples, very small changes occurred in odor and color and moreover, any decay was not seen. Also, significant changes were observed as a result of mechanical tests.

Key words: Bending strength, compression strength, bonding strength, black pine, lamination.