Question: Can You Put Dry Concrete In A Post Hole?

How much quikrete do I need for a post hole?

Remember, the depth of the post hole should be one-half of the above-ground post height.

(Example: For a 6 feet above ground post, use a post with an overall height of 9 feet and place 3 feet in the ground).

The calculator will indicate the number of 50 lb.

bags of QUIKRETE® Fast-Setting Concrete you need..

Will cement dry if too wet?

When a concrete mixture is too wet, it causes a greater amount of shrinkage during the drying process than is needed. As a result, the concrete has a great likelihood of cracking and for those cracks are likely to be a fairly good size. … A watery mix actively reduces the compressive strength of the dried concrete.

Is quikrete as strong as regular concrete?

Quikrete Fast-Setting Concrete Mix is easy to use — just add water — and it sets in 20 to 40 minutes. It’s the most efficient option for setting posts for things like mailboxes, fences and lamps. … That’s stronger than the concrete used for foundations on most homes.

How deep should a 12 foot post be in the ground?

In general, holes should be at least 3 feet deep for posts that extend 8 feet or more above ground level. Posts that extend 6 feet above ground level should have holes at least 2 1/2 feet deep.

How long does it take for concrete to dry in a post hole?

Typically, you can apply some weight to the posts after 4 hours, but it’s a good idea to wait at least 24 hours before resuming fence construction. Standard concrete mixes may take up to two hours to set and should cure for 24 to 48 hours before any forces are applied to the posts.

Can quikrete be used dry?

The simplest way to set a post is to pour the dry material into the hole and then add water. The preferred product is QUIKRETE® Fast Setting Concrete. It is ready to use in 4 hours. QUIKRETE® Concrete Mix can also be used for setting posts, but you must wait a few days before applying heavy loads.

What happens if you add too much water to quikrete?

NOTE: the more water that is added to the mix the weaker it becomes; adding one extra quart of water per 80 lb bag can reduce the strength of the concrete by up to 40%.

Is 2 feet deep enough for fence posts?

The minimum depth that you should dig your fence post holes for panel sections is 2 feet. A general formula is to dig the holes one-third to one-half of the post’s aboveground height. The deeper you dig the holes, the more stability your fence has, but you must also purchase longer posts.

How big of a hole do I need for a 6×6 post?

about 12 inches squareThe depth of your hole should be about 1/4 of the height of your post. For a 6×6 post, the diameter of the holes should be about 12 inches square. As a rule the width of your post hole should never be less than 10 inches. You want holes deep and wide enough to easily support a standard 4×4 post.

Can pressure treated posts be set in concrete?

Simply setting the posts in concrete does create a condition that will accelerate rot in the bottom of the posts. With pressure-treated posts, the rot will be slow. … First, the posts should be set on top of a bed of coarse gravel 3 to 6 inches deep, so the base of the post is in contact with the gravel.

Will concrete cure in wet ground?

Damp ground will not be a problem unless is can not support the weight of the concrete. Cement/concrete does not “dry” , it cures , a chemical reaction. It absorbs water to cure, as noted , some concrete applications are sprayed with water to aid the cure.

How do I put a post in the ground without concrete?

Procedure:Find a concrete surface and lightly tamp your digging iron against it. … Remove the turf and topsoil from the site of the post. … Dig the hole putting the displaced earth onto the tarp. … Pour 4 inches of gravel into the hole.Place the post in the hole. … Add another 2 inches of gravel around the base of the post.More items…•

How long will a treated 4×4 post last in the ground?

The Forest Products Laboratory and other research groups have shown that treated wood stakes placed in the ground for more than 40 years remain rot-free. But young pressure-treated decks, many less than 10 years old, are being shoveled into landfills.

How do you put concrete in a post hole?

Fill the hole with Fast-Setting Concrete up to 3 to 4 inches below ground level. Pour about a gallon of water per 50 lb bag into the hole and allow the water to saturate the concrete mix. Wait about 4 hours to begin constructing your fence or applying heavy weight to your post.

Can I pour concrete in a hole full of water?

The good news is that you can pour the concrete in water. … The biggest issue with pouring concrete under water is movement. If the water is moving, it can wash away the cement paste that’s holding the sand and gravel together. But if the water is calm, then it’s not a problem at all.

How many bags of concrete do I need for a post hole?

Mix two 50lb bags of concrete with water in a mixing tub or 5-gallon bucket. Add concrete into the hole and around the 4” x 4”. Depending on your climate, let concrete set up for 24 – 48 hours.

How do I keep my post level while concrete dries?

Fill the hole up to a depth of 8 inches from ground level with 1/2-inch drainage gravel. Use rough-cut gravel with sharp edges. It will hold the post better than smooth rock.

How long does quikrete need to dry?

The concrete sets up in 20 to 40 minutes, so you can quickly move on to the next stage of the project (a great convenience when setting fence posts) or backfill the hole to finish the job. Under normal curing conditions, you can apply heavy weight to the post (a basketball backboard, for example) after just 4 hours.

What happens if you add too much water to concrete?

What happens when you add too much water to concrete and/or other cement mixes? Over-watered concrete may lead to lower strength, reduced durability, shrinkage cracking, and a variety of surface problems. It is critical that the proper amount of water be added to concrete and other cement mixes.

How long will a 6×6 post last in concrete?

40 yearsThe treated post that are rated for ground contact are guaranteed for 40 years.