A combination of geotextiles with mineral filler is introduced. The clay component in geosynthetic clay liner (GCL) was partially or totally replaced by the zeolite tuff. The properties of such materials were tested. The geosynthetic bentonite-zeolite liner (GBZL) with optimum of bentonite to zeolite ratio in the mixture composition was verified. The most 50% of bentonite may be partially replaced. by the zeolite tuff. On the contrary zeolite tuff increases significantly absorption capability of GBZL against cadmium in comparison with GCL. Zeoli te tuff as wel 1 as its common ·mixture with bentoni te indicates the reduction in swelling ability. The coefficient of permeability of GBZL is decreased but not to such an extent to eliminate its sealing ability.
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