The breakwater protecting the entrance of the harbor of Bayonne (France) against stormy weather built in the ‘60s needed repairs. The design features a wall and a platform wide enough to accommodate the heavy duty crane required to replace and re-position the 40t concrete blocks that cover the exposed outside of the structure, blocks that wear out over time. The authorities specified duplex EN 1.4462 stainless steel rebar with a minimum yield strength of > 750 MPa for reinforcement of the concrete. The high corrosion resistance of grade 1.4462 will contribute to a long lifespan of the structure. The high strength level of the rebar allowed a reduction of tonnage required, a significant contributions to the overall economics of the stainless steel solution. In the end only 130 tonnes were needed.
Courtesy of Ugitech (ugitech.com)