×
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

Lumps of clay in floor slab

Lumps of clay in floor slab

Lumps of clay in floor slab

(OP)
We poured a 8" thk floor slab about a month ago, on the day of the pour the surrounding ground was wet. We poured it using wheel barrows and apparently some clay particles have been left behind in the slab (from the wheels and off the shoes of the labourers).
We noticed pockets of cracking and after scabbling away at the slab we found clay in the slab. The pockets are about 3" x3" and 3.5" deep.

I am suggesting jack hammering the slab to an area of 8" X 8"  and removing the clay particles, then filling in with repair mortar. My question is, would concrete work?. My concern is the cracking around at the interface of the repaired area and existing slab.  

RE: Lumps of clay in floor slab

Use an epoxy/laytex bonding agent on the inplace concrete and a compatable laytex agent in the concrete filler.  There are several around.  Do a "Concrete Repairs" search to see what you may have locally.

RE: Lumps of clay in floor slab

A number of the repair producers have field reps that will come out and evaluate your problem and suggest which of their products will best fit it.  Try Sika or Master Builders for starters.

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