Accelerated fixation of CCA-treated poles

Abstract

The effects of temperature and wood species on the rates of fixation of CCA-C treated pole sections are evaluated by a number of methods: 1) qualitative hexavalent chromium (Cr +6 ) color reaction with chromotropic acid; 2) quantitative analysis of Cr +6 in expressed solution; 3) total Cr, Cu, and As in expressed solution; 4) pH of expressate; and 5) pole surface leaching characteristics. There are generally good correlations among the methods.