Improved current distribution from suitably selected deep groundbeds may be achieved as compared with conventional surface groundbeds. This is of considerable importance in municipal areas where interference problems with other sub‐soil structures are inevitable. More particularly so where comparatively high current densities are required for the protection of pre‐stressed concrete pipes. Cathodic protection of pre‐stressed concrete pipes poses problems utterly different from those met in the practice of cathodic protection of coated steel pipes and, in view of lack of sufficient experience, protective criteria have yet to be established.
Spector, D. (1962), "Pre‐stressed Reinforced Concrete Pipes: Deep Well Groundbeds for Cathodic Protection", Anti-Corrosion Methods and Materials, Vol. 9 No. 10, pp. 257-262. https://doi.org/10.1108/eb020004Download as .RIS
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