Sodium Bentonite Pond Leak and Soil Sealer
Sodium Bentonite “Granules” is a coarse granular bentonite that can be sprinkled over existing ponds to decrease water leakage.
The Sodium Bentonite is drawn into cracks and crevices where leakage is occurring, providing a seal without draining the pond.
Sodium Bentonite “Pond Seal” grade is better suited to sealing new ponds or dry ponds which have no water in them.
How Sodium Bentonite as a Pond Leak Sealer Works
When a comparatively small percentage of Sodium Bentonite is mixed with soil and wetted, the Sodium Bentonite particles expand up to fifteen times their dry bulk size. The expansion forms a mechanical bond with the surrounding compacted soils and fills the voids between the soil particles. This creates a barrier that effectively impedes further seepage through the soil, typically decreasing the permeability of a soil several orders of magnitude.
The hydrated Sodium Bentonite becomes a tough, highly flexible mastic that naturally expands and moves to self-seal small cracks that develop in the soil. Bentonite can withstand hydration/re-hydration and freeze-thaw cycles without losing its sealing ability.