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spaceman spif 09-15-2010 01:14 PM

Repairing small concrete patio
 
I removed a shed from my backyard a year or so ago, and left the slab in place. It's cracked and not level. What I'd like to do is pour in just enough concrete to fill the cracks and level it out. It doesn't need to be perfect, as I'm just going to put some benches and a fire pit there.

I live in southwest Ohio. Any tips or suggestions? Obviously I need to put a wood frame around the existing slab to mold the new concrete, pour, and then remove it when dry. But other than that, any tips or suggestions on type of concrete, ways to make sure it fills all the gaps, etc?

spaceman spif 09-15-2010 11:59 PM

34 views...no replies. What's the record???

stadry 09-16-2010 04:42 AM

' just enough concrete to fill the cracks and level it out. ' won't work UNLESS you don't mind the crk reflecting up thru your new work,,, more than likely, that crk is now a joint ( meaning your slab ' moves ' ),,, solids react to tem changes just as do liquids - hi-skoul fiziks :thumbup:

that having been said, your best bet's probably to just repair ( seal ) the crk, place the benches, & have everyone lean to the high side :laughing:

Bondo 09-16-2010 06:51 AM

Ayuh,... I'd plan on a 4" lift,... In other words, a New slab on top of that 1...
Use steel for reinforcing,+ a layer of sand to isolate the under slab's movements...

spaceman spif 09-16-2010 10:18 AM

Another 4"? Hmmm...that would look awkward. The existing slab is already about 3" above the ground, so another 4" would create a patio that's 7" tall, and that might look odd sticking up that high out of the ground. And tearing up the existing slab and repouring it is more work than it's worth!

epson 09-16-2010 11:52 AM

Drill into existing concrete slab to except 10mm re-bar and use epoxy to set them in place. Then build a form and pour your new concrete.

spaceman spif 09-16-2010 12:53 PM

Quote:

Originally Posted by epson (Post 502178)
Drill into existing concrete slab to except 10mm re-bar and use epoxy to set them in place. Then build a form and pour your new concrete.

Not a bad idea. Any suggestions on how far apart to space the rebar?

epson 09-17-2010 09:14 AM

Quote:

Originally Posted by spaceman spif (Post 502226)
Not a bad idea. Any suggestions on how far apart to space the rebar?

Space them apart every 6


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