A: This product is absolutely great for the expansion joint between two concrete slabs. In order to use it for a patio slab to house joint, the gap in an open area needs to be 3/8 inch, which leaves 3/8 inch overhang on each side. Thus against the house, you would need 3/4 inch space.
Can you expand an existing concrete slab?
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Quote from Youtube video: And once i had it full i took my rebar. And inserted it through again with the idea being to create a strong joint between the existing slab. And the new concrete that would be poured.
How do you extend a concrete patio slab?
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Quote from Youtube video: This particular sized slab. And this is all hand mix as well with bags bag mix and a small electric mixer. And the mix designed I used was a 40 500 psi bag mix the brand I used was blue Hawk. And you
How do you raise the height of a concrete slab?
If you don’t want to go to the trouble of raising the height of the entire floor, you can apply floor leveling compound just to the area around the doorway. Apply the compound and feather it out with a trowel for several feet or more into the dining room.
How do you attach new concrete to old concrete?
A. You can join the new concrete right to the old concrete, this is called a concrete construction joint. The edge of the existing concrete that was sawed should be drilled and doweled so the new concrete won’t separate, lift, or settle from the old concrete.
How do I add a new slab to an existing slab?
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Quote from Youtube video: Long you can see our drill bit is about 100 millimeters. So we'll be drilling. Into this existing concrete about 100 millimeters. And then we'll tap these in using a hammer.
How can I make my patio bigger?
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Quote from Youtube video: But look at this post it's actually holding up the porch. So if we do leave this in place the second option is going to be an extension of the patio.
How thin can you pour concrete over concrete?
You can pour as thin as 1.5 inches over the old concrete.
If you pour any thinner than 1.5 inches you don’t have enough cement paste over and around the aggregate to get strong concrete. It’ll end up cracking and breaking off if you pour it too thin.
How do you join two concrete slabs?
Tie Into the Existing Slabs
When you’re joining two concrete slabs, connect the two with rebar to keep them at the same height. Drill the holes as deep as you can (the entire length of the bit) so the rebar fits snugly into the holes. Insert chunks of rebar and tie them into the grid.
Will concrete bond to concrete?
Concrete is made of cement, stone and sand mixed with water. None of those ingredients contain any natural bonding agents. So when wet concrete is poured or applied to existing concrete, the two won’t join. Once cured, the new concrete will simply sit on top as a different layer.
Can you pour self leveling concrete over existing concrete?
You can pour self-leveling toppings or self-leveling overlays over concrete surfaces you didn’t think were salvageable, saving time and money. “It’s faster and easier than pouring new concrete,” says Paul Koury, president of Westcoat Specialty Coating Systems.
Can I pour concrete over 2 days?
Although concrete will harden soon after pouring, it’s still susceptible to damage from weight during the first four weeks. Wait at least 24 hours before allowing foot traffic, including pets, on a newly poured sidewalk or slab, and don’t drive a vehicle on a new driveway for at least 10 days.
Can concrete stick to dry concrete?
Concrete does not adhere to: Concrete – Dried concrete doesn’t have any natural bonding agents, so in order to get wet concrete to bond to existing concrete, a bonding agent will need to be used. Molds – Most concrete molds are made from urethane rubbers, which are designed to be resistant to concrete bonding.
Can you use wd40 on concrete forms?
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Quote from Youtube video: The thing i had around the house which i thought would work was wd-40. So i used it twice. And it worked great both times i just sprayed it on the first time i had the adobe's along with the rebar.
