Chloride Ion Corrosion Resistance of Innovative Self-Healing SMA Fiber-Reinforced Engineering Cementitious Composites under Dry-Wet Cycles for Ocean Structures

To evaluate the chloride ion corrosion resistance of proposed innovative self-healing concrete based on shape memory alloys (SMA) and engineering cementitious composites (ECC), a total 2 kinds 22 specimens were prepared. Chloride tests SMA-ECC under dry-wet cycles carried out. It was found that erosion depths significantly smaller than MC, growth rate depth obviously MC after 15 (dry wet) cycles. The content vanished at more 10 mm, which consistent with test result AgNO3 solution color-rendering test. Test results indicate that, compared to marine (MC), has better behavior. Moreover, concentration less mm decreased indicating almost all salt reacted in outer layer SMA-ECC, is conclusions 4.1 4.2. Finally, distribution ions Fick’s second law, calculation model describing relationship between apparent diffusion coefficient boundary condition proposed.