Author(s)

A. Muharemovic, I. Turkovic & S. Bisanovic

Abstract

This paper presents one practical method for the corrosion protection of armature tower foundations at overhead lines – the cathodic protection concept. The paper presents possible mechanisms of steel corrosion in concrete, as well as a discussion of the application of two dominant concepts: impressed current cathodic protection system and the system with galvanic anodes. The first system has the better performance and it is proposed as very efficient protection. In practice, for ensuring a significant saving in the supply of electrical energy from the distribution network, the application of solar energy system as support for impressed current cathodic protection system has been proposed. Also, real applications are been discussed with a presentation to satisfy need criterions and standards for each component of this system. Keywords: cathodic protection, armature tower foundations, impressed current cathodic protection system, criterions and standards. 1 Introduction With regards to the condition of usual building standards for making concrete (structure, additives), one can say that iron armature in concrete is corrosion inert. However, one can conclude that the corrosion of the armature in concrete is possible on certain conditions. The characteristic case is an iron armature in the footstep of tower foundations at overhead lines. Each footstep (four in total) has an iron anchor and an iron armature to make stronger concrete. On other hand, each footstep has its own ground (iron or copper). Contacts from different materials, as iron in concrete, iron in earth, copper in earth, results in the corrosion of the more negative metal.

Keywords

cathodic protection, armature tower foundations, impressed currentcathodic protection system, criterions and standards.