Structural validation of geothermal water basins constructed with durability enhanced ultra high performance fiber reinforced concrete (Ultra High Durability Concrete)

Ultra-High Performance Concrete (UHPC) proved to be very durable in harsh environments, primarily because of the extremely low porosity matrix (uncracked). However, limited availability design standards is still a barrier widespread applications UHPC, together with knowledge its durability real (cracked) service conditions. In this paper, use tailored UHPC introduced, whose composition has been specifically designed achieve enhanced cracked state combined aggressive environments. Validation material and structural concept on full scale structure presented, reference tank intended contain geothermal water from cooling tower at power plant. This pilot was constructed using both ordinary reinforced concrete which called hereafter Ultra High Durability (UHDC), for comparative assessment purposes. Upon completion construction entering life, periodic validation tests have carried out validate assumptions check serviceability requirements. Results these tests, performed over span two years are reported detail paper concepts. The study highlights most important parameters that could affect performance structures during casting life. overall project framework presented as pioneer moving towards based durability-design approach structures.