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Savcor Extends Life of Our Infrastructure

Sea Cliff Bridge was cathodically protected by Savcor during the construction, cathodic prevention

A reinforced concrete structure may suffer from heavy chloride-induced corrosion on reinforcement steel in marine environment. Corrosion is a flow of electric current. Savcor Cathodic Protection system feeds the opposite current to corroding steel and stops the damaging corrosion process.  

 

Aging of the structure, often combined with increased loads may create safety risks that should be detected as early as possible. In order to keep track on any movement or unexpected response, the whole structure is instrumented with Savcor Structural Health Monitoring System.  

Sheet pile wall requires cathodic protection, corrosion protection of steel in water

Savcor Cathodic Protection in Marine Steel Structures

Cathodic Protection can be applied to any metallic structure that is in contact with an electrolyte.  

Cathodic Protection is commonly used in structures such as jetties, ship hulls, foundation of offshore wind mills, offshore oil drilling platforms and exterior of pipelines buried in soil or water.  Especially, corrosion of steel piles and steel sheet piles buried in corrosive soil or immersed in water can be stopped by installing a properly designed and engineered Cathodic Protection System.   

MORE ABOUT CATHODIC PROTECTION IN MARINE STEEL STRUCTURES
Cathodic protection of underground steel, pipe in soil

Savcor Cathodic Protection in Underground Steel Structures

Cathodic protection can be applied to any steel structure in contact with soil; underground tanks, steel pipelines and tank bottoms. 


Soil has always some amount of moisture  and depending on the soil type, it can be very corrosive. Typically underground pipelines rely on coatings and CP together for the most ecomical corrosion control. 

Cathodic protection can prevent concrete spalling and eliminate chloride effect

Savcor Cathodic Protection in Concrete Structures

Corrosion causes massive repair works of concrete structures - sometimes without any warning.  Corrosion is one of the main reasons causing repair work of concrete structures. Contributing factors to corrosion of reinforced steel in concrete, typically, are design and construction failures, load and structural issues, temperature, moisture and concrete quality (low cover over the reinforcement, porosity, accelerators and other mixtures). These factors together with chloride ingress from de-icing salt or sea water will lead to an increased risk of corrosion. Once chlorides have destroyed the protective oxide layer from steel surface, corrosion will initiate leading to material loss. Corrosion products - which takes larger space than steel - will eventually cause cracks in concrete and later dangerous spalling of concrete. Due to the fact that corrosion of rebars occurs inside the concrete and cannot necessarily be noticed from the surface, corrosion in concrete often causes surprises. The structure may collapse or extensive rebuilding is needed.  


Savcor Cathodic Protection (CP) is a well-known and proven method to extend the service life of an old reinforced concrete structure. Cathodic Protection is usually applied during the ordinary concrete repairs. For new reinforced concrete structures, CP installation already during building stage can prevent the initiation of corrosion, thus providing an effective and  more economical long-term solution.   

READ MORE ABOUT CATHODIC PROTECTION OF CONCRETE
Cqthodic prevention anodes installed to rebar cage of a chinese bridge foundation

Savcor Cathodic Prevention

Savcor Cathodic Prevention technology for new reinforced concrete structures provides effective long-term corrosion resistance for structures expected to suffer from chloride-induced corrosion during their service life.   

Conventionally, in case of Cathodic Protection in concrete, the most labor-intensive task is the installation work of the anodes. In new structures, the anodes can be installed directly to the steel reinforcement prior to concrete casting. When installing the CP during construction, savings in the CP installation shortens the payback time considerably, especially, in a corrosion intensive environment.


The maintenance access to bridge structures is usually very challenging, requiring extensive and complex scaffoldings. When a Cathodic Prevention is installed during the construction the access is there, already.  Furthermore, when protecting a pristine structure, the protection current requirement is much less than the amount of current required to stop an on-going active corrosion. 


Savcor can design the most cost-effective Cathodic Prevention system for extended 50+ years life time. Savcor offers the market-leading electrodes, its own proprietary rectifiers and remote control units designed specifically for Cathodic Prevention in concrete. Savcor also makes sure the system is correctly installed and commissioned.  

Cathodic prevention anodes installed to bridge supports during construction.

 

Cathodic prevention installed to Sea Cliff bridge support columns in Australia.

Anode installation on the rebar cage of Lawrence Hardgrave Drive Sea Cliff Bridge support column  

REFERENCES OF SAVCOR CATHODIC PROTECTION

Savcor ensures the Structural Safety with Online Monitoring

Savcor Structural Health Monitoring system  installed inGolden Horn Bridge in Vladivostok, Russia

Savcor Online Structural Health Monitoring

Savcor is an independent supplier for Structural Health Monitoring Technology, unrelated to any structure component manufacturer.

Savcor provides unbiased information of the structure.

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