×
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!
  • Students Click Here

*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

Jobs

Repair of Spalling on Precast Girder

Repair of Spalling on Precast Girder

Repair of Spalling on Precast Girder

(OP)
A precast girder is damaged at the end as shown. Would anybody suggest how to repair. It is 70MPa strength concrete with prestress strands.

Thanks in advance

j1d
 

RE: Repair of Spalling on Precast Girder

I don't think I would repair it.  Getting a good patch would require further digging in to the concrete.  I would probably recommend that the owner reject the beam or accept it and get a credit from the contractor.   

RE: Repair of Spalling on Precast Girder

If it's an interior box beam leave it alone. If it's the fascia patch it - otherwise some passerby (or future bridge inspector)will think the bridge has a problem. You could drill in some 3/8" hooks to hold the patch.

 

RE: Repair of Spalling on Precast Girder

(OP)
graybeach, the damage happened during transportation by the owner.

bridgebuster, does the drill hurt the concrete? Or I need wire mesh in the patch?

Thanks
j1d
 

RE: Repair of Spalling on Precast Girder

The hooks won't hurt the concrete. You won't need much embedment for a 3/8" hook. The idea is to have a mechanical bond to hold the patch matrial. Corners can be tough to fix.

RE: Repair of Spalling on Precast Girder

Could you patch it and just wrap the end with a Fiber reinforced Composite?

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