Sika® FerroGard®-903+ is a surface-applied mixed corrosion inhibitor, independently verified, designed for use as an impregnation of steel reinforced uncoated concrete, and is an improved formulation of the original Sika® FerroGard®-903.

Sika® FerroGard®-903+ is based on organic compounds. Sika® FerroGard®-903+ penetrates the concrete and forms a protective monomolecular layer on the surface of the reinforcing steel.

Protection with Sika® FerroGard®-903+ delays both the start of corrosion and reduces the corrosion rate. Corrosion protection with Sika® FerroGard®-903+ increases the service and maintenance life cycles by up to 20 years when used as a part of a complete Sika® Concrete Repair and Protection System.

Features and benefits:

Does not change the appearance of the concrete structure.
Does not alter the water vapour diffusion properties of concrete.
Long term protection and durability.
Can be applied to the surface of existing repairs and to surrounding areas to prevent the development of incipient anodes.
Protects both cathodic (principle 9), and anodic (Principle 11) zones of reinforcing steel.
Can be applied where other repair/ prevention options are not viable.
Economic extension of the service life of reinforced concrete structures.
Easy, economical application, renewable.
Can be used as part of a simple, yet effective, concrete repair and protection system.
Penetration depth can be tested on site using the Sika “Qualitative Analysis Test” - refer to Sika Technical Service Department for details.

Approvals/ standards:

BRE: The use of surface applied FerroGard 903+ corrosion inhibitor to delay the onset of chloride induced corrosion in hardened concrete, BRE Client Report No. 224-346, 2005.
Mott MacDonald: Evaluation of Sika FerroGard 901 and 903+ Corrosion Inhibitors, Ref. 26’063/001 Rev A, April 1996.
SAMARIS (Sustainable and Advanced Materials for Road Infrastructure): Final Report, Deliverables D17a, D17b, D21 & D25a, Copenhagen, 2006.
Mulheron, M., Nwaubani, S.O.: Corrosion Inhibitors for High Performance Reinforced Concrete Structures, University of Surrey, 1999.
C-Probe Systems Ltd.: Performance of Corrosion Inhibitors in Practice, 2000.

EPD - Sika FerroGard®-903+