It is important to know how long this fixation reaction requires under different conditions, to ensure that treated wood is not exposed to the environment before the chromium is completely reduced to the less toxic [Cr.
Of the five formulations evaluated, the order of fixation reaction rate was generally:
However, it is clear that the fixation reaction requires considerably longer times at ambient temperature , particularly during winter conditions .
Previous studies have shown that cold temperatures slow the fixation reaction, extending it to several weeks [8,15], so that the short delay prior to examining the RE heating would have little impact on the accelerated fixation.
Following completion of RF heat treatment, the core of the pole section retains considerable heat that can be used to complete the fixation reaction.