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Posted by on November 12, 2006, 7:27 am
Chuck wrote:
> Greetings all!
>
> We have a pool with cantilevered coping, and the way it was constructed
> involved some forms to create the basic edge, but then the edge of the
> coping was "mudded" to produce a naturalistic rock-like edge to the
> pool. There are a couple sections of concrete mud" (probably like 6
> inches long by an inch or two high) where the "mud" didn't adhere well
> -- these areas basically appear to be a sliver of concrete which is
> cracking off from the main body of the mudded finish work. I sort of
> think of it like a scab which is kind of pulling off from the healthy
> flesh, and which will eventually drop off (sorry if the analogy
> disturbs the spectacularly weak of constitution).
>
> These bits will eventually fall off. One option might be to pull them
> off now and re-adhere them with some product which adheres well under
> wet, and chlorinated, conditions. However, I'd prefer to glue them
> firmly into place without having to take them off first. The tiny
> crack at the edge of the sliver ("scab") is pretty tiny, so it would be
> difficult to neatly squrit a thick epoxy into the crack...something
> more like a low-viscosity "super-glue" would be more appropriate, I
> think.
>
> So my main question is this: Is there some very low viscosity adherent
> (suitable for chlorinated pool applications) I can squirt into the edge
> of this concrete sliver to firmly reconnect it to the main concrete?
> (grey/brown-ish color when dry would be ideal).
>
> Any advice on this matter is greatly appreciated!
>
> Chuck
Concrete in outdoor, wet-dry conditions is extraordinarily difficult
to deal with. The only proven adhesive I know of is epoxy.
You could take a shot with Gorilla Glue. They do advertise that it
will work on outdoor masonery.
You won't like the viscosity of either but you won't like lower
viscosity glues delaminating after a year or so. Wet concrete is
tough.
Jason
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