A Report of Technical Unit Committee T-2B on Anodes for Impressed Current^★: Final Report on Four Annual Anode Inspections Available to Purchase

Four test ground beds were installed so that comparative data could be obtained concerning the performance of steel anodes in natural soil, carbon and graphite anodes in natural soil, carbon and graphite anodes in carbonaceous backfill, and steel anodes in carbonaceous backfill. Representative anodes were inspected at one year intervals with the final inspection coming four years after the beds were set up.

Of the anode types tested it was found that graphite anodes in a carbonaceous backfill gave the best results. Recommendations were made concerning the installation of anodes, the selection of ground bed sites and the use of various backfills.