Routine technology of concrete protection against corrosion.

2. Mechanically anchored sheet liners

Application of PE, HTPE, PP or PVC or sheet liners. The polymer sheets are fastened to the concrete surface by anchors or other special constructive elements.

Liners that are mechanically anchored to the substrate, as such, are rather technological, but fastening and sealing of joints have serious defects. Very often seams are not strong enough to guarantee the strength of joints, they distort easily under environmental loads and loose their leak tightness.

Drawbacks:

1. Due to the space between the lining sheets and the protected surface, water and hydrogen sulfide will always be present under the liner.

2. Raising water in the tube will force the hydrogen sulfide out of the space between the protected surface and the protective liner; lowering of water table will produce the opposite effect the hydrogen sulfide, air and water vapors will be sucked into the under-liner space.

3. As a result, the under-liner space will be subject to corrosion.

4. The binding of liner to the surface gets loose, and as a result the liner separates from the substrate.

5. Destruction of the structure keeps on.

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