PENGAWETAN KAYU SENGON (PARASERIANTHES FALCATARIA (L) NIELSEN) MENGGUNAKAN OLI BEKAS DENGAN METODE PERENDAMAN DINGIN

Abstract

The purpose of this research is to determine the retention and penetration of used oil with diesel solvents at various concentrations and soaking times, as well as its resistance to subterranean termites. The study was carried out at the Laboratory of Biology and Wood Preservation, Faculty of Forestry, University of Mulawarman in Samarinda City. In a completely randomized factorial design with 10 replications, all data was analyzed using a 3x3 experimental pattern. Retention, penetration, and weight loss tests due to subterranean termite assaults were all measured. The average air-dry moisture content of Sengon (Paraserianthes falcataria (L) Nielsen) wood was 11.85 percent, with an air-dry density of 0.35 g/cm3 and a kiln-dry density of 0.32 g/cm3. The time of immersion, the concentration of used oil, and their interactions all have an impact on retention; thus, the higher the concentration and the longer the immersion, the greater the retention value. The penetration value of used oil is greatly affected by immersion time, although the concentration of used oil and its interactions have no influence. The higher the penetration value, the longer the immersion. There was no substantial weight loss regardless of the period of immersion, the concentration of oil utilized, or their interactions. The samples preserved with used oil, however, were more resistant to subterranean termites than the test samples without preservative treatment (control).