GrSwell is chemically treated, granular sodium bentonite used as a detailing accessory product for TegoBloc Swell Waterproofing System. When wetted, GrSwell 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 of GrSwell 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 grSwell is: two grams sifted into deionized water swells to occupy a minimum volume of 16 cc.
