Corrosion of Steel in Concrete: Do Cracks Matter?

Author(s): Chanakya Arya
Paper category: Proceedings
Book title: 3rd International RILEM Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): Changwen Miao, Wei Sun, Jiaping Liu, Huisu Chen, Guang Ye and Klaas van Breugel
Print-ISBN: 978-2-35158-188-9
e-ISBN: 978-2-35158-189-6
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 25-33
Total Pages : 9
Language : English

Abstract: This paper summarises the findings of a recent investigation on the relevance of cracking in concrete to reinforcement corrosion. Many of the early studies on this topic focused on the effect on crack width and exposure environment and largely showed that the larger the crack
width and the more severe the exposure environment the greater the amount of corrosion.
However, latter studies contradicted this type of finding suggesting that corrosion rate was independent of crack width and that the corrosion produced would be unlikely to affect the overall safety of structures. More recent studies suggest that whilst crack widths may be less important than was originally envisaged, there are other characteristics of cracks and adjacent concrete that have a more profound influence on this process. They include crack orientation, number of cracks, thickness of concrete cover, propagation status and quality/moisture content of the concrete. The paper discusses the effect of each of these variables on
reinforcement corrosion, a better appreciation of which would lead to improvement in the durability of concrete construction as well as more effective scheduling of maintenance.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

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