Determination of physical and mechanical properties of scotch pine (Pinus sylvestris L.) wood which impregnated boron compounds and naturel substances

In this study; scots pine (Pinus sylvestris L.) wood which has a great potential in our country Borax from compounds of boron, boric acid and borax + boric acid with natural impregnation of quebracho and quechua examples of experiments made using a combination of three different (1%, 3%, 5%) solution concentration according to the ASTM 1413-76 standard impregnated and changes in some physical-mechanical properties were investigated. After impregnation, the samples compared with control samples by testing. Thus, it is intended to increase the possibilities of use of natural impregnation and boron compounds which makes no harm to human health and to the environment, more economical, and more protective. Quechua and quebracho as a natural preservative which is rich in term of tannin, borax and boric acid as a boron compounds is used. Borax and boric acid are boron compounds and 1%, 3% and 5% the aqueous solution are used. 15 samples which is prepared in each impregnation is first pre-vacuum impregnation apparatus for 30 minutes and then subjected to impregnation treatment for 30 minutes under pressure. Some physical and mechanical properties were investigated of samples after waiting for a week after impregnation conditioning. In this study, from physical and mechanical tests completely dry density of the (TS 2472), retention amount (ASTM D 1413-07), flexural strength (TS 2474), elastic modulus (TS 2478), compression strength parallel to the fibers (TS 2595), parallel pressure resistance to the fibers (DIN 53225) and screw holding strength (TS EN 13446) is done according to (TS EN 13446) standards. According to the experiment results, the highest air dry specific gravity of quebracho, which is the highest value and 1% in the samples impregnated with borax (0.5 g/cm3), full of dry weight 5% in the examples, can be impregnated with quechua of (0.59 g/cm3) realized that the mechanical properties of the high bending resistance value of the sample impregnated with quebracho (90.05 N/mm2), quebracho and modulus of elasticity in the samples impregnated with 3% boric acid+borax (11.222 MPa), compressive strength parallel fibers impregnated kebrako and 3% boric acid samples (60.69 N/mm2), screw holding strength in the samples impregnated with quebracho (107.7 N/mm2), respectively. Keywords: Borax, Boric Acid, Quebracho, Impregnation, Scots pine, Quechua