Corrosion of steel in concrete structures

By A. Poursaee. 2016

159 citations recorded by the source corpus.

At potentials and pH levels normally measured in the concrete, a protective passive layer forms on the surface of carbon steel. It is believed that this layer is an ultrathin (<10 nm) protective oxide or hydroxide layer that decreases the anodic dissolution rate to negligible levels. However, the partial or complete loss of the passive layer, known as depassivation, leads to active corrosion of steel bars. Loss of passivation of steel bars in concrete is caused by either chloride ions or carbonation exposure. The corrosive products of iron are expansive, and their formation can cause cracking and further deterioration in the concrete. This chapter discusses the basic and essential mechanisms of the corrosion of the reinforcing steel bars in a concrete environment.

Subfields: Civil and Structural Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/caf3c9cbe620b1cecab54593ad18c52a77248402

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Citations in the corpus

• A Review of Corrosion and Protection of Steel in Concrete (2018, background): “A typical treatment time is 6-8 weeks [20, 26, 32, 59].”