Cetco Waterstoppage Granular Sodm Bentonite 50 Lb Bag

50 Lb Bag, 1/8" Thick, Waterstoppage Granular Sodium Bentonite

A Chemically Treated, Granular Sodium Bentonite Used as a Detailing Accessory Product For Cetco Waterproofing Systems. When Wetted, It Forms Into a Dense, Low Permeable Material That Combines With The Sodium Bentonite In The Waterproofing Products to Form a Seamless Waterproofing Membrane. Mineralogical Composition Is A Minimum 90% Montmorillonite With A Maximum 10% Native Sediments And Unaltered Volcanic Ash. Typical Sieve Analysis Is 90% Through A 20 Mesh Sieve And 10% Through A 200 Mesh Sieve. Free Swell Rating Of This Product Is: Two Grams Sifted Into Deionized Water Swells To Occupy A Minimum Volume Of 16 Cc.

It Is Used To Fill Cavities And Voids In The Substrate Prior To Installing The Main Bentonite Waterproofing Course. It Is Also Used To Seal Around Slab Penetrations To Form A Continuous Waterproofing System. A Fillet Of This Product Can Be Poured At The Footing/Wall Junction To Provide Additional Waterproofing Protection. A 1/8" (3 Mm) Thick Layer Is Also Applied To The Top Of Tunnels And Earth-Covered Roofs Prior To The Main Waterproofing Material Course. It Is Not An Expansion Joint Sealant.