Drying characteristics of birch tree disk impregnated with NaCl

摘要

This study investigated the conventional drying characteristics of birch (Betula costata) tree disk impregnated with NaCl solution. The results showed that NaCI content in wood was depending on impregnated times; and the relationship between them was linear dependence. The drying duration of treated disk was longer by 25% than that of untreated disk. Na~+ and Cl~-; which were easy to enter the cell wall and combined with microfibril; which was the major reason for enhancing tensile strength perpendicular to the grain and restrain cracks.