- Will concrete set in the rain?
- Does mortar stick to concrete?
- Can I pour concrete directly on dirt?
- Do you need gravel under concrete?
- Do you need rebar for 4 inch slab?
- Does Thinset shrink when drying?
- Can you pour concrete 2 inches thick?
- What is the minimum thickness you can pour concrete?
- How strong is 6 inches of concrete?
- What is the strongest concrete mix ratio?
- Is Thinset better than mortar?
- How thick can you pour cement?
- How thick can you pour mortar?
- Should you put plastic under concrete?
Will concrete set in the rain?
Pouring concrete in the rain can compromise its strength, increasing the tendency for dusting and scaling to develop.
Once the damage is done, it can be hard to rectify and will often ruin the appearance of the finished surface.
Don’t let it rain on your parade..
Does mortar stick to concrete?
If you want to get a good bond between the existing concrete and the fresh mortar you will need to ensure the surface is well prepared. … You can then just make up your normal mortar mix and get the stones re-positioned. Make sure that the concrete you are bonding to is well watered as it can draw water from your mortar.
Can I pour concrete directly on dirt?
Long story short, yes you can pour concrete over dirt.
Do you need gravel under concrete?
Whether you pour concrete for a walkway or patio, a strong gravel base is required to prevent the concrete from cracking and shifting. Gravel is especially important in clay soil because it doesn’t drain well, which results in water pooling under the concrete slab and slowly eroding the soil as it finally drains.
Do you need rebar for 4 inch slab?
No, you do not need rebar for a 4-inch slab of concrete on grade. A 4-inch-thick slab cast on the ground and in permanent contact with it will float and rebar is not required. Rebar is recommended on concrete measuring 5 – 6 inches thick.
Does Thinset shrink when drying?
The mixture shrinks and hardens as it dries. Thin-set mortar is less likely to crack if it dries slowly, but if you need it to dry more quickly to avoid damage to it, you can speed up the process.
Can you pour concrete 2 inches thick?
If done properly, new concrete can often be poured right over an existing slab. For this to be feasible, the contractor needs to pour at least 2 inches thick, use smaller aggregate, and incorporate reinforcement such as welded wire mesh or fiber mixed into the concrete.
What is the minimum thickness you can pour concrete?
25 to 50 mmThe minimum recommended thickness is 1 to 2 in. (25 to 50 mm) for a fully bonded concrete overlay placed on a base slab that is practically free of cracks and in which the concrete is sound, clean, and of good quality. The use of welded wire fabric reinforcement is usually not warranted under these conditions.
How strong is 6 inches of concrete?
Determine the Pad’s Thickness For example, a 6-inch pad with a compression strength of 700 psi can support 1,105 psi. If it was 7 inches thick, it could support 1,194 psi, and if it was 12-inches thick, it could support 1,563 psi.
What is the strongest concrete mix ratio?
Concrete is made from cement, sand, gravel and water. In making concrete strong, these ingredients should usually be mixed in a ratio of 1:2:3:0.5 to achieve maximum strength. That is 1 part cement, 2 parts sand, 3 parts gravel, and 0.5 part water.
Is Thinset better than mortar?
Tiling With Thinset Thinset represents a modern alternative to the traditional mortar bed. It consists of cement, water and very fine sand, resulting in a thinner mortar generally applied no more than 3/16 inch thick. … Finally, thinset generally isn’t recommended for large or heavy tiles.
How thick can you pour cement?
4 to 6 inchesMost specifications for retail or commercial concrete slabs specify 4 to 6 inches of thickness. Owners and contractors have historically disputed whether a poured slab meets a specification because of its thickness.
How thick can you pour mortar?
The terms thinset cement, thinset mortar, dryset mortar, and drybond mortar are synonymous. This type of cement is designed to adhere well in a thin layer – typically not greater than 3/16th thick. For example, a 3/8″ notch trowel will produce a 3/16th inch thick coating after the tiles are pressed in to the cement.
Should you put plastic under concrete?
Recently, though, research has shown that the old traditional layer of 6-mil Visqueen (polyethylene plastic) under the slab is seldom effective for two main reasons: Although it may seem water-tight, this grade of material allows a lot of water vapor to pass through.