Calcium profiles - 10 years

Calcium 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.

All profiles were measured according to the method described in APM 214, May 1995: Concrete testing - Hardened concrete - Calcium content using potentiometric titration.