CAS Coating System

Impressed Current Cathodic Protection for Reinforced Concrete

The CAS Coating is an advanced impressed current cathodic protection (ICCP) system designed to mitigate corrosion in steel-reinforced concrete structures. Using a durable, conductive composite anode coating, this system delivers protective current across concrete surfaces, significantly extending service life in chloride-contaminated or carbonated environments.

Engineered for performance in the harshest conditions—from coastal marine assets to parking garages and urban bridges—CAS offers high output current densities, strong adhesion, and chemical durability. Applied directly to the concrete surface, the system requires no intrusion into the structure, making it ideal for infrastructure preservation where disruption must be minimized.

This third-generation coating system forms a micro-capillary matrix within the concrete pore structure, ensuring stable, long-lasting protection at current densities up to 35 mA/m² (3.5 mA/ft²).

Features & Benefits

The CAS Coating System is a high-performance ICCP solution trusted by engineers, asset managers, and DOTs for demanding corrosion control applications.

• Non-Intrusive Surface Application: No need to drill or embed anodes—coating forms a durable, conductive layer on the concrete surface.

• High Current Output: Provides protective current densities up to 35 mA/m², ideal for structures with active corrosion.

• Exceptional Adhesion & Surface Strengthening: Composite matrix bonds deeply with the concrete overlay, improving surface durability and resistance to spalling.

• Excellent Weathering & Chemical Resistance: Withstands UV, moisture, freeze-thaw, and pH ranges from 4 to 14 for long-term reliability.

• High Electrolytic and Electrical Conductivity: Maintains ionic transport through a micro-capillary structure optimized for cathodic performance.

• Compatible with Common Coatings: Can be overcoated with acrylic, epoxy, or PU-based topcoats to enhance protection and visual finish.

• Low Environmental Disruption: Quick to apply via roller or airless spray, with fast curing times and minimal site impact.

• Minimum Service Life: 15 Years: Durable and tested for longevity—ideal for long-term asset management strategies.

Best Applications for CAS Coating

The CAS Coating System is purpose-built for the rehabilitation and preservation of reinforced concrete exposed to chloride ingress, seawater, deicing salts, and carbonation. It's ideal for surface-level protection where conventional embedded systems may not be feasible.

Recommended Use Cases:

• Bridges and Elevated Highways: Protects decks, beams, columns, abutments, and retaining walls subject to deicing salt exposure.

• Parking Structures: Ideal for parking decks, ramps, soffits, and columns where surface damage and salt exposure are prevalent.

• Tunnels and Galleries: Applied to interior columns and portals vulnerable to humidity and chloride-laden water intrusion.

• Building Envelopes: Used on facades, balconies, and beams in coastal or urban high-rise environments.

• Marine Infrastructure: Extends service life of jetties, seawalls, piers, and waterfront concrete exposed to saltwater attack.

• Pools and Water Tanks: Effective for concrete basins and containment structures exposed to moisture and chemical cycles.

• Salt-Contaminated Concrete Structures: A go-to solution for concrete cast with or exposed to chlorides during construction or service life.