liner_repair
TRANSCRIPT
AquaBlok® Installation:SYNTHETIC LINER REINFORCEMENT & REPAIR
NOTE: Use the arrows below to scroll through this photo series; click on the four arrow icon on the lower right of this slideshow to view the series in an enlarged, full-screen format.
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Contractor removing up to 12” of cover sand/soil atop a compromised HDPE liner. A trash pump was used to cycle pressurized pond water to expose ~2,500 linear feet of the pond shoreline (at an average width of 4-ft). The basin completely surrounded by residential development, so access to the shoreline with heavy equipment was very limited.
A typical cut in HDPE liner impacting an approximately 2' x 6' area of a basin's shoreline edge – probably caused by a combination of UV exposure, ice damage, and age. The sand/soil armor layer (upper right) should be removed prior to AquaBlok® placement (allowing for intimate contact between the hydrated bentonite and the synthetic liner).
Placement of the bentonite/aggregate composite (AquaBlok®) directly out of a shipping tote (note suspension of the bulk super sack on a long-reach forklift). While the 2,400-lb (one cubic yard) bulk bags are equipped with a discharge snout with drawstring closure at the bottom of the bag, cuts with a utility knife can sometimes offer more targeted/controlled placement.
Placement of armor stone (for erosion protection, site safety, and visual appeal) atop pre-hydrated AquaBlok®. By watering the bentonite-aggregate composite prior to adding the stone, the AquaBlok begins to hydrate and “meld” together. This is particularly helpful on slopes where a dry aggregate would be prone to slipping and slumping.
The pond, post-liner repair. Note that the water has returned to the desired/designed level. AquaBlok was placed at a rate of 10-lbs/SF (1.5” dry material thickness) atop just over 10,000SF of perimeter liner, wetted, and then further fortified with stone. The combination of stone and AquaBlok guards against stressors associated with wind and ice while providing a lasting seal.
