Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

steel plate emdeded in reinforced concrete

steel plate emdeded in reinforced concrete

steel plate emdeded in reinforced concrete

it is well known that if two metals are embedded in concrete, they trigger corrosion.( disimilar metal corrosion ).


then how is it possible to weld steel plate to rebars in concrete without triggering corrosion.

RE: steel plate emdeded in reinforced concrete

I wouldn't normally worry about similar metals. For galvanic corrosion, you need moisture, dissimilar materials, and electrolyte. If you have steel to steel the corrosion rate will be minimal. In addition, the high pH of concrete passivates the steel to some extent.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?


RE: steel plate emdeded in reinforced concrete

The key here is dissimilar. When they are the same there is no difference in potential and no accelerated corrosion.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed

RE: steel plate emdeded in reinforced concrete

The weld metal used will be slightly different (more noble due to additional alloys) from the plate and rebar steel materials.
However once embedded into concrete, water ingress is difficult (unless the concrete is porous, i.e. badly made and poured). Also the anode to cathode ratio is at the benefit of the weld metal and won't easily corrode galvanically.

* Finding a solution is great * Knowing how to implement it is fantastic * Believing it is the only one and best is naive ?

RE: steel plate emdeded in reinforced concrete

The weld metal is absolutely more sacrificial than the base metal. Higher strength steel alloys will tend to corrode at a higher rate than low strength alloys under the same conditions.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close