Bentonite Option 1: Since I already have 50 bags of sodium bentonite, I'd like to use it if possible to create an anti-seep collar. My inlet pipe is 8" PVC and I would like to know if a 4'x4'x18" form around center line of existing pipe and then filled with 100% sodium bentonite (no soil mix) will create a proper anti-seep collar.

The bentonite sits in the small spaces between the soil particles and then swells up to fill the gaps when the pond refills with water. This process DOES NOT work well if the bentonite is already saturated when trying to fill the gaps in the leaking areas. …

Oct 13, 2010 · Now the prep I was thinking is pumping the pond below its below leak then clearing major rocks and other forms of debris. Dump layers of bentonite slurry 1.5-2 inches at a time then repeat untill I get about 4-6inches. If I can get a good layer of bentonite mud it should seal when the water goes back up do to hydrolic pressure?

dhill, Bentonite is a clay and when the small clay particles (powder) comes into contact with water, the clay will swell due to it absorbing the water. Due to the swelling of the clay it will cover an area thicker than just a dry powder would or thicker than a polymer might be.

Apr 30, 2003 · Just for the record the bentonite has completely settled in a few days and the water is crystal clear all the way to the bottom at 7 feet. Only time will tell If I have controlled the seep, but it is a very very small holding pond and I seemed to have covered a …

Jun 25, 2003 · A good quality bentonite meant for pond or lagoon sealing will do the job, and expect to pay from $7-$9 per 50lb bag. You do not need to pay $20-$30 per bag as I read on a previous post. I would not recommend buying bentonite from the local farm mill as this bentonite is used for something other than pond sealing.

Jul 3, 2024 · Bentonite works to seal leaks because the material expands in the presence of water. However, it is not a strong, cohesive material - like a grout or caulk. Therefore bentonite would probably NOT seal if there is a crack or fissure in your boulders, or if your boulders are sitting on other rocks.

The lime causes the Bentonite to flocculate, which causes the clay particles to separate and reduces the clay particals of bonding tight together. And will increase the fluid loss of the bentonite. In some of the forum here it is said lime will help clear the water of a new pond.

Bentonite was used where it was not suitable for the soil type and IF you have lean sandy clay there is a much better option. I sealed a 2.2 acre impoundment with lean sandy clay with some areas of sandy loam and our core samples tested came back at less than .030 seep a day, which is the lowest our firms in this location can test for.

So roughly 1.2 % the weight recommended of bentonite when constructing a liner using bentonite (3 lbs/ft^2). The cost to treat with soil-floc excluding shipping and application is ~ $8000 per acre which is a fraction of the FOB source cost of Bentonite > $26000 but just not sure about the cost of bagged mud nowadays.