Our anode backfill is specially formulated for optimal conductivity and long-term performance in cathodic protection systems. Made from premium carbon-based materials, it reduces anode-to-earth resistance, retains moisture, and enhances current distribution. It’s suitable for deep well and shallow groundbed installations in pipelines, storage tanks, and offshore structures. Available in bags or bulk.
In order to reduce the grounding resistance of the anode and make the corrosion of the anode surface uniform, the magnesium anode and zinc anode used for cathodic protection in the soil generally use fillers. The typical filler composition is as follows:
Soil Resistivity | Product | Gypsum Powder | Bentonite | Sodium Sulfate |
＞ 20Ω•m | Magnesium alloy sacrificial anode | 75% | 20% | 5% |
Zinc alloy sacrificial anode | ||||
≤20Ω•m | Magnesium alloy sacrificial anode | 50% | 50% | -- |
Zinc alloy sacrificial anode | 50% | 45% | 5% |
Calcined petroleum coke is mainly used as a ground bed filler for impressed current anodes. It comes from petroleum refining and has a resistivity of generally less than 1Ω•cm.
Model Code | Carbon Content (%) | Moisture (%) | Volatile Matter (%) | Ash Content (%) | Bulk Density | Proportion | Particle Diameter | Resistivity Ω .cm |
CA-01 | ＞ 98.5 | ＜ 0.5 | ＜0.5 | ＜0.5 | 1180 kg/m3 | 2.0-2.3 | 0-1mm | ≤0.1 |
CA-02 | ＞98.5 | ＜0.5 | ＜0.5 | ＜0.5 | 1180 kg/m3 | 2.0-2.3 | 0-2mm | ≤0.1 |
