- Should you keep concrete wet?
- Will concrete crack without rebar?
- Is rebar better than wire mesh?
- What can I use instead of rebar?
- Do you need wire mesh for 4 inch slab?
- Does garage floor need rebar?
- Can I pour a 3 inch concrete slab?
- How many bags of concrete do I need for a 10×20 slab?
- Can you lay concrete without rebar?
- Do I need wire mesh for concrete patio?
- Can I use mesh instead of rebar?
- How many inches thick should a concrete patio be?
- How much rebar do I need for a concrete patio?
- Can I use chicken wire to reinforce concrete?
- Does fiber concrete need rebar?
- What is better fiber or wire mesh or rebar in concrete?
- Can I pour a 2 inch concrete slab?
- Should you use rebar in a concrete patio?
- Should you put a vapor barrier under concrete slabs?
Should you keep concrete wet?
ANSWER: Keeping concrete moist helps the curing process.
If too much water is lost from the concrete through evaporation, the hardening process slows down or ceases.
Concrete continues to gain strength after pouring for as long as it retains moisture, but the longer it moist-cures, the slower the rate of strength gain..
Will concrete crack without rebar?
Without rebar reinforcement, concrete is highly prone to cracks due to tension forces. Rebar helps prevent cracks from growing wider largely by preventing cracked slabs from moving apart.
Is rebar better than wire mesh?
In summary, rebar vs wire mesh can have costly differences. Rebar remains stronger and ensures consistent contact in the soil where as wire mesh is unpredictable and often results in a week concrete foundation.
What can I use instead of rebar?
Direct alternatives to rebar include the use of aggregate materials or metal mesh. Metal mesh ranges from chicken coop wire to fencing. Any type of metal mesh that you may have lying around can be used as a substantial support for concrete.
Do you need wire mesh for 4 inch slab?
No, they do not. Larger projects or slabs may need steel reinforcement to provide support or extra strength. Wired mesh can also help resist cracking. However, not every piece of concrete necessarily requires that extra boost.
Does garage floor need rebar?
No, rebar is not required. Garage floors are poured last. Generally the thickness is usually about 4″ minimum plus. Many builders will not use rebar, nor do many provide control cuts.
Can I pour a 3 inch concrete slab?
Here, pouring a concrete slab 4 inches in thickness is fine. While you may choose to reinforce it with rebar, wire mesh should be sufficient. … A 3- to 4-inch slab will work for the floor of a storage or tool shed, workshop, garden shed, or playhouse.
How many bags of concrete do I need for a 10×20 slab?
A 60-pound bag yields . 017 cubic yards, and an 80-pound bag yields . 022 cubic yards. For a 10 x 10 slab, you would need 77 60-pound bags or 60 80-pound bags.
Can you lay concrete without rebar?
Rebar is not necessary for every concrete project. The general rule of thumb is that if you are pouring concrete that is more than 5 inches in depth, you are probably going to want to add in some rebar to help reinforce the entire structure.
Do I need wire mesh for concrete patio?
For a concrete patio slab the best method of providing reinforcement is to use either wire mesh or steel bars (rebar) placed in a grid pattern. The use of rebar requires that each of the intersections of rebar be tied together with rebar tie wire. … This must be done as soon as the concrete is poured.
Can I use mesh instead of rebar?
Cost: Wire mesh is comparatively affordable than rebar. They come in rolls and are made using thin steel bars. The cost of rebar is dependent upon the width of the bars and will eventually cost you more for labour.
How many inches thick should a concrete patio be?
Four inchesFour inches is the minimum thickness for a concrete patio. You’ll want to make it six to eight inches thick if the patio will support a structure such as a gazebo or hot tub.
How much rebar do I need for a concrete patio?
For a concrete patio, the #3 rebar should be placed every 60 centimetres, or roughly every 24 inches, both vertically and horizontally to form a neat grid pattern inside the area where you will have the concrete poured. The rebar should have support when it is installed so that the grid will not sag.
Can I use chicken wire to reinforce concrete?
Materials such as chicken wire, stucco mesh, wire screening, expanded metal, fence wire or fiberglass cloth should never be used as primary reinforcement because their properties are too variable or they are not sufficiently strong. You cannot rely on these materials.
Does fiber concrete need rebar?
Sometimes you need steel fibers, and sometimes you need rebar, and only in a few limited situations can one effectively replace the other. To put it simply, steel fibers prevent cracks, while rebar limits the width of cracks. … You can’t do that with rebar. Example 2 is a concrete highway two miles long.
What is better fiber or wire mesh or rebar in concrete?
The fiber mesh strengthens the concrete and the steel rebar reinforces the extra load areas. All concrete cracks. All concrete shrinks. … The fiber mesh is good stuff but can stick up above the concrete surface and look fuzzy.
Can I pour a 2 inch concrete slab?
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.
Should you use rebar in a concrete patio?
Do concrete patios need rebar? Even though it’s possible to build a concrete patio without rebar, it’s not recommended. All concrete is subject to cracks, but rebar holds all the cracks together and keeps the slab level and even. Without rebar, the cracks would become quite wide and the concrete would become uneven.
Should you put a vapor barrier under concrete slabs?
Water vapor will always move from a high relative humidity environment below the building into an area of low relative humidity – even through concrete. That’s why nearly every expert in the concrete industry recommends a below-slab vapor barrier to stop the vapor drive of water upward and into your building envelope.