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RE: epoxy bonder and 1" topping slab in vehicle washing area

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Mathew:

For the ignorant what is a petrographic core?

Thanks.
Scott


From: Stuart, Matthew [mailto:mstuart(--nospam--at)schoordepalma.com]
Sent: Thursday, March 30, 2006 1:31 PM
To: seaint(--nospam--at)seaint.org
Subject: RE: epoxy bonder and 1" topping slab in vehicle washing area

I would recommend that you have a petrographic analysis done of some representive cores, otherwise you're just flying blind.


From: Haan, Scott M POA [mailto:Scott.M.Haan(--nospam--at)poa02.usace.army.mil]
Sent: Thu 3/30/2006 5:24 PM
To: seaint(--nospam--at)seaint.org
Subject: epoxy bonder and 1" topping slab in vehicle washing area

I am involved with a project where a 6" slab on grade's surface finish was spalling.  The breaks are between 4500 psi and 5000 psi.   The contractor wants to grind down the top 1" and put an epoxy bonder on the ground down areas and then put on a 1" topping slab.   The area will be wet and have vehicles park on it.
 
Has anyone heard of this kind of fix and is it durable over the long term?  Should an extended warranty be requested?