GRANULAR SODIUM BENTONITE
VOLCLAY GRANULES are chemically treated, granular sodium bentonite used as a detailing accessory product for CETCO Waterproofing Systems. When wetted, VOLCLAY GRANULES form into a dense, low permeable ‘paste’ material that combines with the sodium bentonite in the waterproofing products to form a seamless waterproofing membrane. Free swell rating of VOLCLAY GRANULES is: two grams sifted into deionized water swells to occupy a minimum volume of 16 cc.
VOLCLAY GRANULES are 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 VOLCLAY GRANULES can be poured at the footing/wall junction to provide additional waterproofing protection. 3 mm thick layer of VOLCLAY GRANULES is also applied to the top of tunnels and earth-covered roofs prior to the main waterproofing material course. VOLCLAY GRANULES are not an expansion joint sealant.