THE EFFECTS OF PRE-OZONE TREATMENT ON RETENTION LEVELS AND THE COMPRESSION STRENGTH OF SPRUCE WOOD TREATED WITH ACQ AND CCA


GEZER E. D. , Kustas S.

SIGMA JOURNAL OF ENGINEERING AND NATURAL SCIENCES-SIGMA MUHENDISLIK VE FEN BILIMLERI DERGISI, cilt.10, ss.29-36, 2019 (ESCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 10 Konu: 1
  • Basım Tarihi: 2019
  • Dergi Adı: SIGMA JOURNAL OF ENGINEERING AND NATURAL SCIENCES-SIGMA MUHENDISLIK VE FEN BILIMLERI DERGISI
  • Sayfa Sayıları: ss.29-36

Özet

In this study, ozone pre-treatment was applied to spruce wood samples. Spruce wood samples at equilibrium moisture content (EMC) were pre-treated using ozone for 30 and 60 min, respectively. The intensity of ozone was kept constant at 15 g/h for all variations. The ozone pre-treated spruce wood samples were then impregnated with 2.5 % Alkaline copper quat ((Celcure AC500) (ACQ)) and 1% copper chromium arsenic (CCA) solution by applying initial vacuum for 20 min and then free-pressure for 30 min. The retention levels and penetration depths were determined for each variation and control sample. The ozone pre-treatment increased the retention levels and penetration depths. It was found that the retention levels were 5.03 and 5.27 kg/m(3) for the ozone pre-treated (30 and 60 min) spruce for wood samples treated with 2.5% ACQ, while the retention level for control wood samples was 3.84 kg/m(3). The results showed that ozone pre-treatment enhanced the impregnation properties of spruce wood. In addition, the applied ozone pre-treatment increased compression strength parallel to grain values (CS).