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Technical Principles

Electro-osmosis Damp Proofing System (EDP) and Wireless Electro-physical Drying System(EDS)

Our Challenge

Concrete and masonry structures contain thousands of capillary formations, and in the same way as plants and trees draw water from the soil, water can penetrate structures through capillary synthesis. Gravity also causes water to seep into porous structures, causing damage and deterioration, and eventually, failure of the structure.

Harm

Rust on building steel bars                  
Wall mold

Solving The Challenge With EDP And EDS

Figure 1

Moisture rises from the earth by capillary and osmotic action. The inner surface of the capillary tube contains silicon hydroxyl groups. When the capillary tube is filled with solution, the silicon hydroxyl groups on the capillary wall undergo dissociation, generating hydrogen ions that dissolve in the solution. This forms a double layer charge on the capillary tube wall, where the    tube wall is a negatively charged layer and the solution is a positively charged layer.

How Does EDP Work?

Figure 2

When an electric field is applied to both ends of the capillary, the positively charged solution will move towards the cathode as a whole, forming Electro-osmosis. Either positively charged, negatively charged or uncharged particles move towards the cathode under the action of Electro-osmosis. The positively charged particles are affected by the electric force in the same direction, and move the fastest. The uncharged particles move the second fastest. The negatively charged particles move the slowest(because they are affected by the electric force in the opposite direction to Electro-osmosis).

How Does EDS Work?

Figure 3

When an low-frequency pulse electromagnetic field is applied. Ions and water molecules are affected by multiple low-frequency pulsed electromagnetic fields. They will constantly vibrate and rotate, disrupting capillary action, causing part of the water vaporizes, while the other part returns to the soil through gravity.