Quick Answer: Can You Put Dry Concrete In A Post Hole?

Can I mix quikrete in the hole?

Pour the QUIKRETE® Fast-Setting Concrete Mix dry from the bag into the hole until it reaches 3 to 4″ from the top.

Pour water onto the dry mix and allow it to soak in.

This will take about one gallon of water for each 50 pound bag depending on soil conditions..

Will a wood post rot 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.

How long will treated post last in concrete?

5 to 10 years4 Answers. A PT post will last a long time in concrete, maybe 5 to 10 years in soil alone. I suggest you embed the post in concrete, trowel a peak around the post so water runs off, and don’t let the PT post come in contact with the ground.

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.

What happens if you add too much water to quikrete?

When there is too much water in the concrete, there is greater shrinkage with the possibility for more cracks and reduced compressive strength. As a general rule, every additional inch of slump decreases strength by approximately 500 psi.

How do you keep a post straight in concrete?

Digging the Hole Water drains better from around the post if you cover the bottom of the hole with 6 inches of gravel, so you should add that distance to the depth of the hole. It’s also a good idea to splay out the edges at the bottom of the hole to give the post more stability.

Will concrete cure in water?

All hydraulic cements cure underwater, including Quikrete. A common misconception about concrete is that the curing process is dependent upon water evaporation. … Modern cement binders allow builders to pour concrete underwater and leave it to cure. As a result, pouring concrete underwater around a post is simple.

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.

Why deck posts should not be set in concrete?

A deck post should always be placed on top of footing, not inside concrete because it can break. When concrete is poured around a deck post in this way, the post will rot due to moisture buildup by the soil. …

Will cement set 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 deep should a post hole be?

Dig post hole so diameter of the hole is 3 times the width of the post (i.e., the hole for a 4” wood post should be about 12 inches wide). The depth of the hole should be 1/3-1/2 the post height above ground (i.e., a 6-foot tall fence would require a hole depth of at least 2 feet).

Can you set a post with dry concrete?

When the concrete is dry-poured then wetted, there are no gaps around the concrete between the post or the soil, which helps negate any erosion that may cause the post to lean. We care less about having a maximum PSI footing and more about having a very tightly-packed hole to keep the post level.

Can you put wood post in concrete?

First rule, gang: Do not set wooden posts in concrete. Look, no matter what preventative steps you take (and I’ll get to those), eventually wooden posts rot, and eventually you’ll have to set new ones. Not only does burying them in concrete make for more work down the line, it actually can speed up the rotting.

How long does it take 4 inches of concrete to dry?

While it only takes around 28 days to cure concrete, drying can take months. The general rule of thumb is that concrete takes about 30 days to dry for every one inch of slab thickness.

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.

How long do footings take to dry?

It all depends on the recipe (ie the mix design) and the temperature. Typically, people start building on the footing after 3 or more days in more or less comfortable temperatures. Cold weather takes longer. Typically, you might expect around half of the specified strength at 7 days.

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.

Is quikrete as strong as concrete?

Quikrete Fast-Setting Concrete Mix is easy to use — just add water — and it sets in 20 to 40 minutes. … That’s stronger than the concrete used for foundations on most homes.

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

10″A 6×6 post requires a 10″-diameter hole. Shovel a 6″ layer of gravel into the hole to provide drainage.