Pouring concrete under water

[AlbertC]

Texas42

I understand the concept of using the tremie but the hole is full of water. If I put a pipe in the hole the water is going to fill up the pipe so I am basically going to be pouring concrete into the pipe full of water. The hole is 12"in diameter and 36" deep. With the tremie method are you saying that the pipe I use should be a smaller diameter (say 5") so that after I pour concrete into the smaller pipe and force the water out then I can lift the pipe out of the hole and continue pouring concrete such that the concrete is deposited intact at the bottom of the hole and will force the water out of the hole. I think this is the concept, right.

 

[Ford850]

Texas42

I understand the concept of using the tremie but the hole is full of water. If I put a pipe in the hole the water is going to fill up the pipe so I am basically going to be pouring concrete into the pipe full of water. The hole is 12"in diameter and 36" deep. With the tremie method are you saying that the pipe I use should be a smaller diameter (say 5") so that after I pour concrete into the smaller pipe and force the water out then I can lift the pipe out of the hole and continue pouring concrete such that the concrete is deposited intact at the bottom of the hole and will force the water out of the hole. I think this is the concept, right.

That's how it's done. It doesn't have to be perfect with a relatively small hole like yours, but that process will work pretty decent.

 

[GPintheMitten]

I think the problem is smaller than these solutions but if you wanted too you could get a 4 or 5 in piece of pvc pipe about 4 foot long. Stand it on a scrap of plywood outside the hole. Then fI'll it with concrete. Then quickly move it into the hole. Then start lifting it out of the hole slowly so the concrete spills out if the bottom of the pipe. Fill the pipe as you go until the hole has as much concrete as you want. The concrete will displace the water from the hole.

 

[fordmantpw]

For this size hole, just mix the concrete properly and dump it in. The water will splash out the top and voila, you've poured concrete under water. If you want to be sure you displace ALL of the water, mix enough so that it fills the hole completely. Otherwise, the water will just sit on top of the concrete.

 

[Egon]

For this size hole, just mix the concrete properly and dump it in. The water will splash out the top and voila, you've poured concrete under water. If you want to be sure you displace ALL of the water, mix enough so that it fills the hole completely. Otherwise, the water will just sit on top of the concrete.

Quick and easy. Water sitting on the cocrete won't hurt much.

 

[bigtiller]

Let me be the fifth one to say that properly mixed concrete will displace the water in the hole. Try it.

 

[Streetcar]

I will be the sixth, just mix and pour concrete

 

[RobS]

Seventh...

 

[Billrog]

8th pour it in.

 

[jack707]

When I built my wood shed I had water and ice in the hole I pored the mix out of the bag used more water all was good. Why not use a long hose connected to a sump pump to get the water out.