Geosynthetic clay liner is a rolled geosynthetic material design for waterproofing. It is used as a impervious screen and for protection of buried parts of building structures against moisture, including for protection against penetration of contaminating substances into soil and groundwater.

Fig.1 – Structure of bentonite liner

The material consists of high-quality bentonite granules/powder evenly distributed between the woven and non-woven polypropylene geotextile connected using needle-punching method.

Geosynthetic clay liner BentIzol® and MASTERBENT® meet the requirements of GOST R 70090-2022 “Rolled geosynthetic bentonite materials for waterproofing. General technical conditions”.

GCLs have the following properties:

  • High waterproof properties: clay liners coefficient of permeability equal to 10-11–10-12 m/sec demonstrates super low water permeability
  • Self-healing in case of mechanical damage
  • High strength, resistant to tear, damage, soil shear and settlement
  • Eco-friendliness: due to sorption properties of bentonite clay absorbing hydrocarbons, heavy metal cations and radioactive nuclides
  • Cost-effectiveness and easy to install:
  • special preparation of the base and seams welding are no required;
  • no limitations in terms of weather conditions, since the GCLs keep their flexibility at a temperature of up to -70°C
  • Durability: the service life is comparable to this of the facility
Fig. 2 – Bentonite liner BentIzol®

Application:

  • Mining industry
  • Landfills
  • Hydraulic engineering
  • Oil industry
  • Power engineering
  • Reclamation of contaminated territories
  • Industrial and civil construction
  • Transport construction