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Most Online3,612 Jan 10th, 2023
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by ttdigiacomo |
ttdigiacomo |
Hi all, my one acre pond has finally filled. I have a 8” drain going thru the dam that has started to leak on the back side of the dam about 30 feet from the waters edge. The pipe is about 2 feet under water and has a mortar collar poured around it on the water slope. The top of the collar is in about a foot of water and the bottom in about 2 1/2 feet. I also built in a ball valve at the end of the pipe for draining purposes.
Unfortunately, a few weeks ago when the water was lower the pond iced then the snow melt pushed the ice up under the drain end and lifted the pipe assembly about 4 inches. The mortar collar essentially was raised up above the pond slope exposing a small gap under the pipe. Today, a week later, I notice a very soft spot where the water is seeping out on the back slope.
My best immediate guess of a plan is to get two or three hundred pounds of bentonite and try to seal around the mortar collar. I have access to “bentonite chips” and “bentonite powder” from a local Facebook vendor.
What do you think of the plan? Also, form of bentonite would be best?
Thanks in advance fo the help, Tony
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by ttdigiacomo |
ttdigiacomo |
Well friends, the repairs worked. Seep has dried up as a result of fixing the cracked mortar collar with hydraulic cement and covering the face of the pipe penetration with 300 lbs of bentonite chips (coated gravel). I’ll be installing a small bubbler near the overflow so the ice won’t lift the pipe and re-open the leak in following winters.
A tip for using bentonite chips - mix 50-50 with dirt prior to spreading. The bentonite goes further and the dirt gives the swelled up bentonite “snot” more body.
Thanks for all the help!
Tony
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2 members like this |
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by teehjaeh57 |
teehjaeh57 |
Reach out anytime, as a volunteer here my time is always free to the Pond Boss family. If you elect to go the polymer route I can source a PB forum discount, too.
tj@hudlandmgmt.com
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1 member likes this |
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by ttdigiacomo |
ttdigiacomo |
Spread another 300 lbs of Bentonite chips mixed with dirt over and around the mortar repair yesterday. Should know in a few days if fixes worked - I think they will.
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1 member likes this |
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