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Anodi MMO ELGARD®

ELGARD® mixed metal oxide (MMO) anodes are the ideal solution for cathodic protection of steel-reinforced concrete.

ribbon anode on rebar

A steel-reinforced concrete structure is strong, reliable and can withstand intense environmental exposure. However, moisture, chlorides, carbon dioxide gas, and other aggressive agents can, over time, penetrate concrete, causing corrosion (rust) of the reinforcement bars. When rust on the rebar expands, it causes pressure that cracks and weakens the concrete infrastructure. The concrete is then compromised, which is why corrosion prevention of concrete is vital- to ensure the longevity of all steel-reinforced concrete. 

ELGARD® mixed metal oxide (MMO) coating on titanium anodes is the key to using cathodic protection (CP) to prevent the corrosion of steel-reinforced concrete structures. Since the mid-1980s, ELGARD® MMO anodes have been used to prevent corrosion and increase the life of: 

  • buildings, bridges, tunnels, stadiums, parking garages, 
  • new and historic monuments 
  • power generation cooling towers, marine structures, dolphins 
  • piers, wharves, viaducts, seawater intakes

Discover More About CP With ELGARD

Connect with an Elgard Licensee Download: ELGARD Grid Concrete data sheet

Why ELGARD anodes are the ideal product for concrete structure corrosion prevention: 

  • 100 year expected product life cycle  
  • flexible design options 
  • easy to transport, handle and install 
  • performance consistency: uniform current distribution 
  • global manufacturing and technical support network  



The Importance of Effective CP System Design 
Engineers are challenged to design systems that effectively prevent the corrosion of concrete. ELGARD anodes for cathodic protection are embedded in the concrete matrix, making them highly customizable to the unique needs of each concrete structure.  

What makes ELGARD the product of choice for customers? 

With decades of experience, De Nora has created anodes and ancillary products that allow cathodic protection engineers the ability to design cost effective and efficient cathodic protection systems. ELGARD MMO anodes are manufactured using a proprietary process that offers an expected design life of more than 100 years at full rated current output. ELGARD customers are confident knowing that stringent quality control is maintained at all times. 

ELGARD® anodes are NACE International TM0294 certified. Extended testing of “Embeddable ICCP Anodes for Atmospherically Exposed Steel-Reinforced Concrete” (NACE) shows ELGARD products can perform at over twice the lifetime as this certification requires (40-year requirement). 

As industries worldwide increasingly prioritize sustainability and adherence to ESG standards, solutions like ELGARD® anodes for cathodic protection of steel-reinforced concrete emerge as essential assets in infrastructure development. By safeguarding against corrosion, ELGARD® anodes not only extend the lifespan of vital structures, but also contribute to environmental preservation by reducing the need for frequent repairs and replacements. Moreover, these corrosion prevention systems enhance safety, reinforcing social responsibility by ensuring the structural integrity of concrete. Through its commitment to longevity, reliability, and eco-conscious engineering, ELGARD® exemplifies the integration of ESG principles into cutting-edge infrastructure solutions. 

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