Gadeikis, S., Dundulis, K., Gadeikytė, S., Urbaitis, D., Gribulis, D.
Geotechnical properties of compacted clays as buffer and
backfill
The purpose of the investigation is to assess local clay
soils of different composition, physical state and mechanical properties as a
base and construction material for establishment of landfills for radioactive
waste. The investigations have been carried out for three clay soil types of
different age and origin in order to assess the potential of this clay to be
used for the establishment of engineering barriers, as well as the base and
slopes of landfills. The investigations have been performed by laboratory and
field methods for both the natural as well as the disturbed and compacted
soils. In order to assess the soil to be used for fill-ins (aggregate), field
investigations have been performed at a special test site. Changes in
geotechnical features of the soils were observed at the test site in autumn and
spring. Seasonal investigations enabled to assess the compacted clay soils
according to changes of their features over time.