GCL

Geosynthetic clay liners are established sealing product in the geoenviromental industry they are used in landfill caps and for above ground tank farms. as well as within various other  containment structures such  as dams ,canals ,prnds,rivers and lakes. they are also used for waterproofing of buildings and other similar structures.

Rolled out like a carpet to provide a durable impermeable liner,geosynthetic clay liners consist of a layer of high swelling sodium bentonite.sandwiched between two geotextiles.by different techniques, manufactured GCL,taianqicheng,is mechanically bonded by needle punching from one no woven or woven geotextile.

Sodium Bentonite is a naturally occurring clay with hundreds of use. Comprising mainly montmorillonite,a layered clay mineral with broaden flat platelets which are idcally.shapcd to provide a hydraulic barrler.Sodium lons located between these platelets allow water to hydrates swelling characteristics. swells when contacted with water approximately 900%by volume or 700%by weight.

When hydrated under confinement, the benlonite swells to form a low permeability clay layer with the equivalent hydraulic protection of several fact of compacted clay.

This swelling allows the bentonite to seal around penetrations. giving the GCL self sealing characteristics .During hydration, a confined layer of dry betonies changes into a dense monolithic mass with no observably individual particles. A full hydrated sodium benforfite layer can have a hydraulic conductivity of approximately, one hundred time lower than a typical compacted clay liner(CCL),Reeause of their low hydraulic conductivity,GCLs are used mainly as a replacement for thick, difficult to build, compacted clay liners to provide a barter to liquid and gases.

Permathene supply and install a range of GCLs from light to heavy grades. These are high performance environmental liner comprised of geosynthetic carrier components integrated with a layer of low permeability sodium bentonite .the rolls are supplied in wide widths,minimising seams, installation is fast.

GCL(geosythetic clay liners) technique index