BENTONİK - ZEOLİT KARIŞIMLARININ MÜHENDİSLİK ÖZELLİKLERİNİN BELİRLENMESİ

Determining the Engineering Properties of Bentonite – Zeolite Mixtures In this study, bentonite-embedded zeolites with different bentonite content were developed for possible use as barrier material, as an alternative to bentonite-embedded sand. Cation exchange capacity (CEC) of Na-bentonite and zeolite; volumetric shrinkage, compaction characteristics; and hydraulic conductivity of the mixtures were investigated. Considering the zero adsorption capacity of sand, the practical implication of high CEC of zeolite is remarkable. Hydraulic conductivity tests on bentonite embedded zeolite with 10% and 20% bentonite content show that the hydraulic conductivity of both mixtures are less than 1*10 -9 m/s, which meets the common regulatory requirements. Moreover, the test results reveal that variations in hydraulic conductivity of the mixtures with different stress conditions are negligible for practical purposes.