Chloride profiles - 5 years

Chloride profiles measured on drilled cores from the 15 concrete blocks placed at the Fehmarn Belt exposure site are presented below. The profiles were measured after approximately 5 years of exposure to the marine environment, and for each block, two cores were drilled, i.e. one from below sea level and one from the splash zone and profiles were measured from both the west (W) and east (E) facing side of each core.

The chloride profiles were obtained according to the method described in DS 423.28:1984  Testing of concrete - Hardened concrete - Chloride content using potentiometric titration for determination of chloride contents. This method was used for all profiles expect the ones measured for concrete A, F, and K (only the splash zone profiles), which were determined according to the same standard, but using Volhard's titration instead.

It is noted that the data presented in the figures below have not been corrected for variations in aggregate packing near the concrete surface.