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Re: Concrete disintegration

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To have a rapid deterioration would indicate something like large amounts of
gypsum. A local business once thought that incorporation into concrete would
resolve the environmental problems involved with the disposal of waste
drywall (wall board). A few months was all it took to find the concrete
literally blowing apart.

Ken Johnson

----- Original Message ----- 
From: "Mike Livingston" <mwlivingston(--nospam--at)hotmail.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Wednesday, April 23, 2003 1:12 PM
Subject: Concrete disintegration


> Yesterday I told my kids I crushed concrete with my bare hands.  It was
less
> funny for the homeowners though.  I was called out to look at some homes
> where the basement walls and foundations were spalling, slumping, and just
> plain crumbling away.  The homes are many miles away from each other with
> the concrete supplier being the common factor.  Test cylinders from the
same
> batch were recently tested with about 1/4 of the strength they had before.
> We're going to take core samples, do a chemical analysis, and replace the
> foundation, but I'm curious as to what you think the supplier put into his
> concrete to have such devastating results a few months later?  (Seems salt
> instead of sand might do the trick...)  Does anyone have any reference
> materials they can aim me at?
> Thanks,
> Mike Livingston, SE, CE, P.Eng
> mwlivingston(--nospam--at)hotmail.com
>
>
>
>
>
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