High Performance Fiber Reinforced Cementitious Composites (HPFRCC) have some micro cracks under the bending load. In this study, the durability for the steel corrosion in HPFRCC is clarified. Therefore, the corrosion cell formation pattern and the rate are compared between HPFRCC and plain mortar. Especially, the multiple cracks at HPFRCC are focused. As a result; 1) The corrosion cell formation pattern of HPFRCC is microcell, while that of plain mortar is macrocell. 2) The corrosion rate of HPFRCC is lower than that of plain mortar. 3) From the above results, it can be confirmed that the durability for chloride or carbonation corrosion of HPFRCC is higher than that of plain mortar.
