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Cathodic Protection Technology



Impressed current cathodic protection systems for reinforcing steel- in- concrete

CPT’s mission is to provide scientifically proven long-term corrosion protection with integrity and innovation. CPT’s experience in implementing impressed current cathodic protection systems on millions of square feet and thousands of balconies have given us singular insight to what works and what doesn’t.

Although there are many options in the market place today – NACE (National Association of Corrosion Engineers) and the DOT (Department of Transportation) are independent organizations that support the fact that only impressed current cathodic protection is designed to STOP ongoing concrete craking and spalling due to corrosion of reinforcing steel. CPT's manufacturer, Matcor, leads the industry in innovative development of cathodic protection technology for reinforcing steel in concrete structures. Matcor designed the first impressed cathodic protection system for a concrete bridge deck in 1975 and today, hundreds of buildings and support structures, highway surfaces and bridge decks, parking garages, marine and other concrete structures are protected by their cathodic protection systems and products.

Every structure has its own unique characteristics due to location, construction methods, previous repairs, and corrosion problems. Because of this, we design and manufacture a number of steel-in-concrete cathodic protection systems using impressed current anodes to fit a wide variety of situations. Impressed current cathodic protection systems from CPT are not simply materials delivered to the job site. The systems include all components, installation drawings and instructions, on-site technical assistance, written reports and documentation, final system commissioning/energizing and maintenance instructions for system monitoring and monthly data analysis.

Systems available for the Condominium market include:

Conductive Coating System-CPBD™-III

This system is the most cost efficient and applicable solution for Condominium balconies, walkways, stair wells, plaza deck and parking garages. A non-wearing surface, easily applied with a roller, brush or spray, the CPBD™ -III System is ideal for horizontal and vertical surfaces. The surface of the system can be finished in a variety of textures and colors and is therefore an excellent choice for building facades, balconies and garage ceilings.

Saw Slot System-CPBD™-II

The CPBD™ -II has proven to be durable and reliable. This system is usually specified for vertical columns and parking garage decks. The high strength conductive concrete used in the saw slots can be the final driving surface or, where required, covered with an overlay.

MMO Mesh Anode System-CPBD™

Our Mesh Anode system can be used for parking garages, sea walls, ramps and other structures. The titanium mesh is embedded in new concrete or placed in an overlay on existing concrete. 

Impressed Current Cathodic Protection

Impressed current cathodic protection systems use an outside source of power to drive the current from the anode to the cathode. The source of power for our system comes from alternating current (AC) that we convert to DC current via a rectifier. Impressed current systems are commonly used where the current requirements for corrosion protection are high and where the driving voltage is greater than what can be obtained with galvanic systems.

These systems are more accurate and can be controlled to deliver just enough protective current to the structure. Because we can control and measure it, we are confident that a 25 year design life is achievable.