Corrosion resistance of ultra-high performance fibre- reinforced concrete

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 penetration also extremely high (the diffusion coefficient equalled 1.3·10−13 m2/s) temperatures 60 °C or 90 improved even more properties, while lack them slightly worse. Given excellent the rate in specimens submerged solution for negligible (iCORR from 0.007 0.025 µA/cm2). These remained stable time, unlike 50 MPa at 2 months when iCORR starting increase 12-fold year. time estimated onset is on average about 150-fold that MPa.