Cathodic protection of concrete using an anode attached to an outer surface

A concrete assembly and an anode apparatus mounted thereon, the assembly comprising:

• a concrete structure having one or more metal components within the concrete structure;
• the concrete structure having a planar mounting surface defining a plane on which the anode apparatus is mounted;
• the anode apparatus comprising:
• a body having a front face mounted on the planar mounting surface and a rear face facing away from the planar mounting surface of the concrete structure;
• the body and the front face thereof being arranged so that no portion of the body extends beyond the plane of the planar mounting surface;
• an anode carried on the body;
• the body including an impermeable covering material at the rear face covering the anode and the supporting material with the impermeable covering material extending to positions on respective sides of the anode at the planar mounting surface of the concrete structure;
• an ionically conductive supporting material carried on the body and engaging the anode;
• the supporting material having a front face arranged to allow communication of ions from the anode through the supporting material to the metal components in the concrete;
• the front face of the supporting material being spaced from the plane of the mounting surface of the concrete structure;
• wherein the body includes two parallel walls which define therebetween a channel recessed away from the plane of the planar mounting surface of the concrete structure;
• and an adhesive material distinct from and attached to the supporting material received within the channel and connecting the supporting material to the planar mounting surface of the concrete structure and so as to connect the body to the planar mounting surface.

A concrete assembly and an anode apparatus mounted thereon, the assembly comprising:

• a concrete structure having one or more metal components buried within the concrete structure;
• the concrete structure having a planar mounting surface defining a plane on which the anode apparatus is mounted;
• the anode apparatus comprising:
• a body having a front face mounted on the planar mounting surface and a rear face facing away from the planar mounting surface of the concrete structure;
• the body and the front face thereof being arranged so that no portion of the body extends beyond the plane of the planar mounting surface;
• the body defining two side edges each spaced from a center line of the body an anode defined by anode material carried on the body where the anode is located along the center line so as to be spaced from each side edge of the body;
• the body including an impermeable covering material at the rear face covering the anode and the supporting material with respective side edges of the impermeable covering material extending to said side edges of the body and, at the side edges of the body, to a position at the planar mounting surface of the concrete structure;
• wherein a distance at right angles to the center line from a side edge of the anode to the side edge of the impermeable covering material is arranged to be substantially equal to or greater than a distance of the metal components from the planar mounting surface of the concrete structure.