Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015) 2015
DOI: 10.14264/uql.2016.517
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Field experience and the long-term durability of reinforced concrete structures

Abstract: For reinforced concrete structures the conventional wisdom is that after some years of exposure to marine conditions reinforcement corrosion is inevitable. Much attention is paid in the literature to the rate of ingress of chlorides through the concrete cover to the reinforcing bars and to ensuring highly impermeable cover and/or deeper cover, to try top prevent chloride-induced or carbonation-induced corrosion initiation. Actual field experience shows that there are many reinforced concrete structures that ha… Show more

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Cited by 3 publications
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“…Figure 1 shows an example for which there is useful background information [38]. This case and many others have a number of features in common, including [28,29,39]:…”
Section: Observations From Rc Structuresmentioning
confidence: 99%
See 2 more Smart Citations
“…Figure 1 shows an example for which there is useful background information [38]. This case and many others have a number of features in common, including [28,29,39]:…”
Section: Observations From Rc Structuresmentioning
confidence: 99%
“…Figure 1 shows an example for which there is useful background information [38]. This case and many others have a number of features in common, including [28,29,39]: Very high levels of chloride concentrations on reinforcing bars do not necessarily ‘cause’ other than very minor corrosion, and often no visual evidence of corrosion at all, for many years, often decades. For high-quality concretes, the onset of serious, damaging corrosion is considerably later in time than any measure of corrosion initiation. The causative mechanism(s) for the commencement of serious reinforcement corrosion remain unclear but do not appear to be the same as those for corrosion initiation. Very serious localised reinforcement corrosion without obvious external signs of corrosion such as rust staining and concrete cracking or spalling can and does occur, but clear explanations for such corrosion remain outstanding.
Figure 1 End and side view at low tide in 2009 of a Phoenix caisson similar to those used for the WW2 Normandy invasion, beached in Langstone Harbour, UK. The caisson was constructed on the adjacent coastline (Hayling Island) and broke its back (in 2 places) during launching in 1943.
…”
Section: Observations From Rc Structuresmentioning
confidence: 99%
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