High Performance Concrete in Nuclear Power Plants
The French Nuclear Power Plants (NPPs) construction program is characterized by the standardization of all its components, including the civil works. The concrete structure is a conventional beam and column structure. In this building there is a special structure: the turbine generator set pedestal which must exhibit high rigidity despite its plane dimensions and its spring-mounted support. An exception is the turbine pedestal whose volume could be quite significantly reduced with high performance concrete (HPC) provided prestressign is used; the current high re-bar content would make a reinforced concrete solution impractical. The mass of the concrete is very useful for shocks and the benefit of HPC is not obvious, except if fibers are added; in which case project economy could suffer. Given the diversity of the structures described above, the benefits of using HPC in place of traditional concrete must be examined on a case by case basis.