| The sacrificial anodes protection of concrete containing corroding reinforcing steel bar at tidal and splash zone was examined in laboratory experiments. A anodic system was designed for locations such as tidal- splash zone of marine structure, and the law of protection were studied .The results revealed that the anode embedded in mortar ~vhich was placed on surface of concrete can protect marine structure at splash zone effectively. The performance of anodes in MS mortar (containing 2.5kg/rn3 CL) was superior to that of anodes in other mortar. The potential shift of most rebars in location at splash zone in 4-h polarization decay test exceeded 1 OOmV ; an bare galvanic anode immersed in seawater can improve the protection of anodic system at splash zone and enhance their life time. The performance between Zn-Al-Cd anode and Al-Zn-In anode were examined. In mortar the potential of Zn-Al-Cd anode was more positive than that of Al-Zn-In anode. The method was considered a competitive alternative to impressed-current cathodic protections.
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