Observed chloride penetration in Eastern Scheldt storm surge barrier, the Netherlands, after 20 years in North Sea Environment
Polder, R.B.; de Rooij, M.R.; de Vries, H.; Gulikers, J. (2003). Observed chloride penetration in Eastern Scheldt storm surge barrier, the Netherlands, after 20 years in North Sea Environment, in: van Gelder, P.H.A.J.M. et al.Proceedings: risk-based maintenance of civil structures, Delft, January 21st, 2003. pp. 10
On site and laboratory testing was performed with regard to durability of the Eastern Scheldt Storm Surge Barrier. The structure was built in the 1980s on the South West coast of The Netherlands. The Barrier stretches about 2800 m across the Eastern Scheldt estuary including two islands and consists of 65 openings, each with cast in-situ piers connected by precast beams and precast bridge elements and steel sliding doors. All concrete was made of blast furnace slag cement with a low w/c, using river sand and either dense river gravel or lightweight coarse aggregate. Cover depth to the reinforcement was measured. In the laboratory, chloride profiles, thin section microscopy and compressive strength and splitting tensile tests were performed. Chloride penetration is discussed with regard to concrete type and exposure. Service life calculations are presented using the DuraCrete model for chloride ingress induced corrosion initiation.
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