Investigation of absorption, retention and swelling in Izmir-Doğanbey geothermal waters-treated pine wood (Pinus brutia Ten.)

Abstract

The purpose of this study is to investigate amounts of geothermal water absorption, geothermochemical retention and swelling in radial and tangential directions in Izmir-Doganbey geothermal fields-treated woods. Samples of pine sapwood (Pinus brutia Ten.), low-temperature geothermal resource waters, hot-cold open tank method and distilled water were used for experiments. Impregnating procedures were carried out in geothermal field in normal weather conditions. Tests were conducted in laboratory conditions. As a result, these waters could a potential wood protection fluid that will be used for wood impregnation according to hot-cold open tank method. For pine wood treated with these waters, the absorption, retention, swelling in radial and tangential directions were founded between 0,40 to 0,53 g/cm3, 0,10 to 0,31%, 5,04 to 5,30% and 7,23 to 7,24%, respectively. Type of geothermal resource affected significantly absorption and retention statistically (p≤0,05), but did not affect swelling. Despite no significant difference between geothermal fluids in terms of impacts, when geothermal water-treated wood samples were compared with distilled water-treated wood samples, the swelling decreased 18,25% and 8,02% in radial and tangential directions, respectively. Similar results were also obtained for retention and swelling in air-dry humidity. Keywords: Pine, Geothermal, Impregnation, Absorption, Retention, Swelling