B+Tech studies bentonite, which is naturally occurring clay generated from the alteration of volcanic ash and consisting predominantly of smectite minerals.
Among bentonite’s many interesting properties there is one we are especially fond of: bentonite clay has remarkable sealing abilities when exposed to water. As proven by bentonite deposits around the world, bentonite is physically and chemically stable over geological time scales. Thanks to these attributes, bentonite is used widely for environmental protection purposes as sealant in foundations of ponds, irrigation ditches, landfills or wastewater holding facilities as well as in borehole plugs and tunneling. Bentonite is also an important constituent in geosynthetic clay liners.