SNAP-ON ZINC MESH ANODE CP SYSTEM

System Description

This is yet another innovation in sacrificial anode cathodic protection system. The principle behind the system is exactly the same as that used by the zinc hydrogel anode system and the pre-packaged zinc anode system. This product was originally developed as "Lifejacket" by Alltrista Zinc products Company in North America and is marketed by FOSROC International as "Galvashield LJ". The all-in-one system (Fig.6) is based on the installation of 2-piece, snap-together jackets (Fig.7) lined with expanded zinc mesh (Fig.8).

Fig.6 Snap-on Zinc Mesh Anode CP System (Galvashield LJ) (Photo copyrighted by FOSROC International and Alltrista Zinc products Company)

Fig. 7 and 8 The two-piece fiberglass jackets snap together
(Photo copyrighted by FOSROC International and Alltrista Zinc products Company)

Each jacket assembly is supplied with a minimum of 8 non-conductive standoffs per face. These standoffs secure the zinc mesh in place while achieving the optimum position of the jacket in relation to the piling.The self-contained system provides an innovative solution to the corrosion problems of both new and existing concrete structures subject to periodic wetting and drying as experienced in the splash and tidal zones (Fig.9).

Fig.9 Zinc Mesh Anode Installed on Bridge Pilings
(Photo copyrighted by FOSROC International and Alltrista Zinc products Company)