Embedded sacrificial anodes can be used not only to prevent corrosion of steel bars, but also to repair reinforced concrete that has already corroded.

They are composed of super-grade zinc anode (Zn≥99.995%), prefabricated high-alkaline active mortar coating material, special pore agent and steel wire.

Embedded sacrificial anode can be used not only to prevent corrosion of steel bars, but also to repair reinforced concrete that has already corroded.

They are composed of super-grade zinc anode (Zn≥99.995%), prefabricated high-alkaline active mortar coating material, special pore agent and steel wire.

During the manufacturing process, a special process is used to treat the surface activity of the zinc anode to maintain a high working area and uniform corrosion consumption.

For use, just connect the steel wires at both ends of the embedded sacrificial anode to the steel bar. After pouring the concrete, the mortar will activate the zinc anode immediately, and continuously provide electrons to the steel bar to prevent it from corrosion.

1. Negative open circuit potential, open circuit potential not less than -1100mV (Vs saturated calomel electrode)
2. High alkaline and activity mortar PH≥14
3. Low mortar resistivity <100Ω.m
4. Long service life, not less than 10 years
5. High anode activity, short induction period, stable potential and current output, and always in an active state during operation
6. Good safety and reliability. The corrosion products are evenly dispersed in the high-activity mortar, and will not cause expansion stress to the protected structure
7. Simple installation. Just wrap the steel wires at both ends of the anode on the protected steel bars

Rebars, concrete and embedded anodes are selected for self-coupling test. The output current of anode was monitored during the curing period within 30 days after concrete pouring and after 6 months of continuous coupling operation. The results show that:

1. 1. In the early stage of pouring, the output current of the embedded anode reached 5000 μA, and the rebar was rapidly polarized; then the output current gradually decreased, and finally stabilized (720 μA), and the rebar potential stabilized at about -420mV;
   2. After 6 months of coupling, the output current of anode stabilized at 60-120μA (fluctuates in a small range due to the influence of temperature and humidity), and the rebar potential stabilized at about -400mV~-440mV.