Bentonite films are specialized geosynthetic materials used for waterproofing the foundation and underground structure. They are used for their ease of construction and effectiveness in creating impermeable barriers.

Properties:

• It combines several layers of geotextiles with a layer of low-permeable bentonite clay.
• Geotextiles provide mechanical strength and act as a filter, preventing the ingress of tiny particles of soil into the bentonite layer.
• Bentonite is a naturally occurring clay material with excellent waterproofing and swelling properties.
• Bentonite clay forms a low-permeable barrier that can block the passage of water and other liquids.

Use:

• Waterproofing basements, foundations and underground structures,
• Prevention of leakage of liquid waste and gases in landfills,
• It serves as a compress for water retention in ponds and reservoirs,
• Tunnel construction,
• Secondary containment system for tanks (chemical storage).