DIN Standards Committee Water Practice
DIN EN ISO 10769
Clay geosynthetic barriers - Determination of water absorption of bentonite (ISO 10769:2011); German version EN ISO 10769:2011
Geosynthetische Tondichtungsbahnen - Bestimmung der Wasseraufnahme von Bentonit (ISO 10769:2011); Deutsche Fassung EN ISO 10769:2011
Overview
This standard specifies a method for determining the water absorption of bentonite. Bentonite is a part of clay geosynthetic barriers (GBR-C). Water absorption depends on the specific surface of the fine particles and the surface activity of the bentonite. The test provides an index value for production control testing of clay geosynthetic barriers (GBR-C). The amount of water absorbed in relation to the dry mass of the bentonite sample is determined over time by an automatic electronic balance system. The water absorption value is determined during a test period of 24 hours. Different bentonite samples can be compared using water content diagrams. The Committee responsible for this standard is NA 106-01-11 AA "Geotextilien und Geokunststoffe; SpA zu CEN/TC 189 und ISO/TC 221" ("Geotextiles and geosynthetics; Mirror Committee of CEN/TC 189 and ISO/TC 221") at DIN.
Document: references other documents
Responsible national committee
NA 106-01-11 AA - Geotextiles and geosynthetics; mirror committee to CEN/TC 189 and ISO/TC 221
