Abstract
The background to a major study into the corrosion characteristics of steel reinforcement within portland and blended cement concretes is presented. The objectives of this work included an investigation into relationships between chloride ion concentration and the onset and rate of steel corrosion in concrete. Corrosion activity of steel reinforcement within concrete specimens was measured using procedures including half cell potential, resistivity and potentiodynamic anodic polarization. A total of 4 binder types which included a slag blended cement and a fly ash blended cement were used. The development of a procedure to electrochemically measure the corrosion rate of steel in concrete slab specimens partially immersed in chloride solutions is described.
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