INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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.

Jobs

Contraction Joints for walls

Contraction Joints for walls

(OP)
On a Concrete retaining wall, the contraction joints should it be filled with expansion joint material or left open?  Could we use brick mortor instead of the expansion joint material?

RE: Contraction Joints for walls

Your post is titled "Contraction Joints" but your question says "Expansion Joint."  A contraction joint is just a planned crack location.  An EJ has a gap.
It's important to keep rocks and other material out of an expansion joint.  Otherwise, if something gets in the joint in the contracted state, it may keep the joint from easily moving as the concrete expands,causing unplanned stresses.  Joint material is a good way to keep that from happening, though there are others.

RE: Contraction Joints for walls

Contraction joints in retaining walls would not have expansion joint material nor any other material. It is just a weakend plane thru the wall where cracking can occur (in a relative straight line) as the wall shrinks.

The joint may be caulked (for appearance) if desired, but make sure the caulk that is selected can accomodate the anticipated movement without tearing.

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!


Resources


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