Changes in Physical, Mechanical, Shrinking and Swelling Properties of Pine Wood Species Treated With Salt Natural Geothermal Waters as Environmentally Safe Resources

Abstract

The purpose of this study was to study the effects of salt natural geothermal water (SNGW) treatment on the physical, mechanical, shrinking and swelling properties of wood materials from two pine species. This study used the SNGW of Eynal, Çitgöl, and Naşa from Kutahya in Turkey on sapwood samples of black pine (Pinus nigra Arnold.) and Brutia pine (Pinus brutia Ten.). The absorption, retention, density, moisture content, modulus of rupture (MOR), modulus of elasticity in bending (MOE), compression strength parallel to the grain (CSPG), shrinking, and swelling values were measured for the treated and non-treated wood samples. The results showed that the absorption and retention values increased by depending on the concentrations of the dissolved salts in the SNGW used. In addition, the density and moisture content values of the SNGW-treated pine wood species were significantly higher than those of the untreated wood, whereas the values of MOR, MOE, CSPG, shrinking, and swelling were lower. In general, the Eynal treatment had the highest effect on pine species' wood properties, whereas the Naşa treatment had the least effect.

Economically Feasible Wood Biopreservation Platform in Lannea coromandelica (Houtt.) Merr. Against Wood Rotting Fungus Through Bio-Prospecting Weed Extracts

“…When compared with untreated wood blocks, the extracts of L. camara (E1 and E2) demonstrated reduced dimensional changes (swelling and shrinkage; different planes, volumetric), revealing the ability of these extracts to improve the dimensional stability of L. coromandelica wood blocks. The findings are consistent with those of Var and Kardas (2019), that discovered that salt natural geothermal water (SNGW) treatments reduced the swelling values of pine woods. However, the performance of A. conyzoides (E3 and E4) extracts was lower in providing dimensional stability over control.…”