Smart questions
Smart answers
Smart people
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Member Login




Remember Me
Forgot Password?
Join Us!

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips now!
  • 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!

Join Eng-Tips
*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 from Indeed

Link To This Forum!

Partner Button
Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.
Just copy and paste the
code below into your site.

saturnstroll (Structural) (OP)
22 Nov 09 2:41
With regards to ICF homes, and vertical wall pours..

If a contractor significantly delays between pours and a cold joint occurs, how is this any different than blocks and mortar?

In this scenario, there is sufficient rebar traveling perpendicular to cold joint.

Seems to me that building residential walls with concrete blocks and mortar with occassional rebar amounts to many many intentional cold joints.

Are they both weak? Suspect to water infiltration?
Ron (Structural)
22 Nov 09 7:02
Yes and Yes.
ATSE (Structural)
25 Nov 09 15:33
A cold joint (the code refers to this as a construction joint) in concrete will always be superior to masonry. The bond between mortar and block is much weaker than concrete to concrete.  In addition, rebar minimums are higher in concrete compared with masonry.
Water-blasting the construction joint will improvement bond.  However, depending on how the ICF blocks are laid, this may not be possible.

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!

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