
A-1 / A-13 / A-14 Underpasses - Italy
This series of projects included 13 underpasses along major motorways in Italy.
Galvashield SM-DAS is a surface mounted distributed anode system designed to provide corrosion control or cathodic protection to steel reinforced concrete structures.
These anode units are distributed across reinforced concrete and masonry structures to provide global corrosion protection or can be used to target specific sections with high corrosion risk such chloride contaminated concrete around joints and areas with high corrosion potential.
Galvashield SM-DAS anodes contain alkali-activated mortar cast around a high-purity zinc core. Once installed, the zinc anode corrodes preferentially to the surrounding steel reinforcement, thereby providing galvanic corrosion control to the embedded reinforcing steel. The quantity of zinc provided, the anode length, electrical components and installation procedures are customized to meet specific project requirements.
Note: Recommended unit length is 1 meter (39 inches), though this can be customized to meet project requirements.
Our X-Series of products ensure you get the high performance and long-term protection you need in any environment. Cathodic protection system designers should utilize SM-DAS-X if your structure sees average annual temperatures above 15°C or 60°F or is exposed to high levels of chlorides. To learn more about the X-Factor, read our blog post here.
*As with all galvanic protection systems, service life is dependent upon a number of factors, including reinforcing steel density, concrete conductivity, chloride ion concentration, temperature, humidity and anode spacing.
When two dissimilar metals are coupled together in an electrolyte (concrete), the metal with the higher electronegative potential for corrosion (zinc) will corrode in preference to the more noble metal (reinforcing steel). Galvashield® SM-DAS anodes are attached to sound concrete with Galvashield® Embedding Mortar (an ionically conductive mortar) then mechanically anchored to provide corrosion prevention or corrosion control to the embedded reinforcing steel.
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See how this product was used in successful projects.
This product has been used to solve corrosion problems across these markets.