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Soil–bentonite slurry-trench cutoff walls using backfill consisting of on-site sandy soil and Na-bentonite are extensively used as engineering barriers for the purpose of achieving relatively low hydraulic conductivity. The amendments such as zeolite to backfill are considered to improve the contaminant sorptive capacity. At some sites, local clayey soil, Ca-bentonite and natural zeolite may be available...
The mineralogy, geochemistry and geotechnical properties of clay samples in Lianyungang, China are presented. The correlations of depositional history, depositional environmental and geotechnical properties are discussed. A series of X-ray diffraction tests show that the principal clay minerals of the soil are illite–smectite mixed-layer mineral and illite. The geochemistry investigation results indicate...
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