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SteveB[_9_]

"hr(bob) " wrote in message
...
On Sep 4, 10:53 am, Virtual Voyager wrote:
Hi all,

I have a 16' x 22' concrete patio that butts up against the
utilityroom exterior wall foundation. It was poured when the house
was built almost 40 yrs ago.

It has severe cracks that appear to be almost, if not, all the way
through . Some not so deep. The cracks have created individual
sections, which has caused an uneven surface.

What can I use to seal the cracks? Finished appearance is not an
issue since I intend to build a "floating" deck over it.

I want to seal them so as to eliminate any further "settling" due to
the water undermining the slab(s).

Any and all experience and expertise is appreciated.

Vv

Will the area be roofed over when the new floor is built, and/or will
water still be able to get under the slab(?) from around the
perimeter, and then be subject to freezing and thawing?

I had good luck with pourcrete. Hydraulic cement. Has the consistency of
flour, you make it up until it is like thin pancake batter and pour in a
hurry, cause it sets fast. I had a bottom concrete slab at my cabin that
had sluffed off heavily due to freeze/thaw cycles, and just the aggregate
was showing. It would get wet, then freeze, then be slippery. I put some
PourStone on there, and made it intentionally rough on top, thinking I'd
just get the season out of it, and that would be it. It still has a grip on
the original concrete going on three years now, and is not sluffing at all
with the freeze thaw cycles. Be careful to mix it in small batches, like a
pint or less, because it is spendy, and you will waste it if you make too
much, and it starts setting. I like to use it on cracks because you make it
to the consistency of being pourable, and just pour it in the cracks, and it
flows right in. If one settles too much, just add a little more the next
time. It's weird stuff when you are mixing it like corn starch, it all
settles to the bottom. I use a wood paint stirrer to mix it.

HTH

Steve