Chloride profiles - 10 years

Chloride profiles measured on drilled cores from the concrete blocks placed at the Fehmarn Belt exposure site are presented below. The profiles were measured after approximately 10 years of exposure to the marine environment, and for all of the investigated blocks, two cores were drilled, i.e., one from below sea level and one from the splash zone. Profiles were determined for the concretes with the following IDs: A, B, C, E, F, G, H, I, K, L, N, and O.

For the blocks produced with concrete G, H, I, L, and N, profiles were measured from the west (W) facing side of each core, and for the remaining investigated blocks 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.

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