Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

Rebar rescue


Working with the Corrosion Group of Aston University, Fosroc has developed a method of applying the principles of galvanic protection to rebar. The result is Renderoc Galvashield XP, a new method of treating concrete structures suffering from chloride attack.

Galvanic protection of steel using sacrificial anodes is a proven and effective process used on ship hulls. Trials on concrete have previously resulted in the concrete substrate itself causing either passivation or erratic activation of the anode.

Fosroc says that even concrete suffering significant concentrations of active chlorides can be treated with Renderoc Galvashield XP. Preparation of the concrete is by traditional methods with the Galvashield anode attached directly to the rebar using wire ties.

The anode itself is encased in a specially formulated sleeve which facilitates electro-chemical migration of chloride ions- corroding the more reactive zinc anode while leaving the steel rebar intact. This means that rather than curing the symptoms of attack, corrosion is actually prevented, Fosroc claims.

Fosroc (01827) 262222

Have your say

You must sign in to make a comment

Please remember that the submission of any material is governed by our Terms and Conditions and by submitting material you confirm your agreement to these Terms and Conditions. Please note comments made online may also be published in the print edition of New Civil Engineer. Links may be included in your comments but HTML is not permitted.