Galvanic protection systems utilize dissimilar metals to provide protection to embedded reinforcing steel. When two metals are coupled together in an electrolyte, the metal with the higher potential for corrosion (more electronegative) will corrode in preference to the more noble metal. In the case of concrete, zinc is used to provide galvanic protection to the steel. This type of system does not require on-going monitoring and is suitable for conventionally reinforced and prestressed/post-tensioned concrete.

The following additional information is available:

Vector Galvanode® Jacket
Galvanic Jacket for Cathodic Protection

The Vector Galvanode Jacket galvanic protection system is designed to provide a low cost reliable method of extending the service life of corroding columns and piles in marine or non-marine environments. The Vector Galvanode Jacket system is comprised of a fiberglass jacket and galvanic zinc anodes placed around the structure to be protected with the anode embedded in portland cement concrete or mortar. Unlike traditional concrete jackets, epoxy grouted jackets, and wraps, the Vector Galvanode Jacket provides on-going galvanic current to address active corrosion.

The system is self-powered and regulates its current output according to the corrosion rate of the steel and its operating environment. Marine jackets for tidal and splash zone protection are provided with standard zinc anodes. For this application, bulk zinc anodes are recommended for supplemental protection below mean low tide. Activated zinc anodes are supplied for jackets designed to protect areas above the tidal or splash zones and for jackets used in non-marine applications. Either type of anode may be pre-installed inside the fiberglass jacket or the components may be supplied separately. In many cases, field installation of individual components may be simpler and more easily adapted to suit variable site conditions.

The Vector Galvanode Jacket system is simple to install and most work can be completed while the structure remains in service. The system requires no maintenance, no extensive column preparation prior to installation, and restores concrete loss due to steel corrosion and concrete spalling in one operation. Vector Galvanode Jackets can be supplied as round or square jackets, flat panels or custom shapes in lengths suited for the project.

Applications:

Structures subject to chloride     contamination Harsh chemical exposure Prestressed concrete piling Steel H piles Bridge columns

Features and Benefits

	Versatile - can be used to protect steel or concrete structures (conventionally reinforced or prestressed/precast) in marine and non-marine applications. Available in standard and custom sizes.
	Low maintenance - requires no external power source or system monitoring.
	Structure-specific design - each system is tailored to the environment and service life expectations.
	Less self-corrosion - zinc embedded in concrete matrix minimizes premature anode consumption.
	User friendly - installation is quick and easy. Repair spalled concrete and provide lasting protection in one step. No costly electrical work required.
	Site support - on-site training and technical service available from factory-trained corrosion technicians.
	Contractor friendly - orders available with short lead times depending on the size and complexity of the project. The system can be generally installed by an experienced contractor.
	Measurable - anode performance can be easily monitored if required.
	Long lasting - 10 to 35 year service life* as required.