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8 Pages

Durability of fly ash concrete in a concrete harbor structure

V. Årskog O.E. Gjørv

In order to obtain an improved and more controlled safety against steel corrosion in a new concrete harbor structure, the current recommendations and guidelines for probabilitybased durability design according to the Norwegian Association for Harbor Engineers were applied (Årskog & Gjørv 2008, NAHE 2004a, b). Based on a specified service period of at least 100 years before 10% probability of corrosion would be reached, a chloride diffusivity of D28 ≤ 5 × 10

−12 m2/s in combination with a concrete cover of 90 ± 15 mm were required. In addition, proper frost resistance was also specified.