The corrosion resistance of ultra-high performance concrete (UH) made with different fibre contents and under distinct curing conditions was studied. No signs carbonation were observed after 1 year accelerated testing (3% CO2). fibreless UHs’ electrical resistivity above 5000 Ω·m, although these values 2-fold higher than a UH 1% fibres approximately 5-fold 2% fibres. Concrete to chloride penetr...