Similarly, how thick can cement be poured? Recommended minimum thickness is 1 to 2 inches. The topping mix you mentioned is OK. The day before placing the concrete, moisten the surface and keep it moist until you place concrete, but there is no standing water on the slab during laying. Use a 50% mixture of Portland cement and sand and make a paste out of it.
You can use a 50% mixture of water and latex bonding agent (such as Acryl 60) to make the suspension. Clean or sweep existing grout on the floor just before laying the concrete with a stiff broom. The grout should not dry out before placing the concrete on it. The thinnest generally used when pouring concrete, is generally about 2 to 2 ½ inches.
That also applies to this pouring of new concrete on old concrete. How thin can you pour concrete over existing concrete? The thinnest generally used when pouring concrete, is generally about 2 to 2 ½ inches. Any thickness greater than 2 inches would be too thin. As mentioned above, the new concrete layer is only as good as the existing layer below, so be sure to repair the cracks below and separate the two layers.
Since the floor is interior, the cracks between the existing concrete and the trenches for plumbing and electrical are not likely to move. When you see a crack in the concrete slab or wall, the first assumption is that something has been done wrong, but that's not always the case. If you added a few inches of concrete to a walkway leading to your entrance, you could create a trip hazard for people who don't realize the gap. The fluctuation of temperatures will cause the concrete to rise, which will cause cracks and separations.
The most economical way to obtain concrete is to mix your own with Portland cement, sand and crushed stone. Otherwise, you risk getting weaker concrete once it heals, which could lead to cracking or crumbling in a couple of years. If you don't do everything you can to avoid it, you may be replacing the concrete sooner than you'd like. Avoid the top 12 concrete pouring mistakes and you have a project to be proud of for a long time to come.
Vapor barriers are used because while fresh concrete is poured wet, it's not supposed to stay that way. That's why a corrosion-proof reinforcing rod should be used for long-term reliability of concrete projects. For this to be feasible, the contractor needs to pour at least 2 inches thick, use smaller aggregates, and incorporate reinforcements such as welded wire mesh or fiber mixed into the concrete. If you have never poured your own concrete before, I suggest you plan to make at least 3 attempts (goldilocks approach, since your first batch may be too watery, your second batch too dry, etc.
In addition, two weeks after pouring, use a masonry saw to make cuts to a third of the thickness of your slab concrete.