Longevity of corrosion inhibitors and performance of liquid deicer products under field storage

Abstract

This work investigated the longevity of inhibitors and the performance of corrosion-inhibited deicer products under two storage conditions. Three liquid deicers (MgCl 2-based FreezGard, CaCl 2-based CCB, and NaCl+GLT) were selected for the field storage monitoring and the key properties tested included the chloride and inhibitor concentrations, corrosion parameters (E corr and PCR), pH, electrical conductivity, and performance parameters (T c and IMC 30°F). The three liquid deicers investigated did not lose their quality over the 14 months of field storage, regardless of the storage condition (mixed or non-mixed). As such, it is not necessary to implement any mixing for the liquid deicer tanks during storage. It is however essential to mix the tanks immediately prior to the use of the liquid deicers, to ensure uniform composition. This study also revealed that the investigated corrosion inhibitors did not show side benefits in suppressing effective temperature or in providing ice melting capacity of their corresponding deicer product.