Since ancient times, man used clay for waterproofing (compacted clay layer). New technologies and the most water-retaining clay - bentonite, made it possible to create a perfect waterproofing material – GCL (geosynthetic clay liners).
GCL consists of three layers: woven and nonwoven geotextile and granular bentonite evenly distributed between them. The layers are needle-punched.
GCL are used as a roll waterproofing material in industrial, civil, transport and hydraulic engineering. In addition, GCL effectively protect the soil and groundwater from the ingress of pollutants, which has found its application in the construction and reclamation of waste landfills, in the oil and gas and mining industries, agriculture, etc.
Interesting fact: GCLs are the only waterproofing material which possesses self-healing properties after damage.
GCL with a thickness of 6.5 mm in its insulating properties corresponds to a compacted clay screen with a thickness of 50-100 cm.
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