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Re: reinforcement in topping slabs
- To: seaint(--nospam--at)seaint.org
- Subject: Re: reinforcement in topping slabs
- From: Daryl Richardson <h.d.richardson(--nospam--at)shaw.ca>
- Date: Fri, 12 Jan 2007 15:39:39 -0700
You might want to think
about using an admixture to reduce of eliminate shrinkage of the topping.
Such admixtures do exist; consult your ready mix supplier or a materials expert
in your area.
H. Daryl Richardson
----- Original Message -----
Sent: Friday, January 12, 2007 3:04
Subject: RE: reinforcement in topping
Why are you bonding
to the existing floor? Any cracks
in the existing floor will reflect in the new topping. At the sump there will be some
cracking unless reinforcing is used. I would think about using steel fibers
added to the mix and wet curing.
We have being using wet cure for 14 days minimum and that has reduced
the amount of cracks. You will
never eliminate all of cracks.
Can you put in control joints?
W. Loomis, P.E., Senior Structural Engineering
Engineers and Designers, Inc.
Sent: Friday, January 12, 2007 12:46
reinforcement in topping slabs
I have a project that involves
pouring a topping slab onto an existing structural slab. The topping
slab ranges from 3 inches thick near a sump pit to 6 inches at the wall of the
room. The room/ slab size in approx 16' x 24'. A bonding agent is
currently specified. I was wondering I should provide reinforcement
in the topping slab to control cracking.? Does the presence of
reinforcement really help ? Can the majority of the cracks be
controlled by a well defined curing procedure.