and weight and isolated from the foundation by means of
damping washers was used.
The aim of the tests was to determine the frequency
characteristics for each of the types of specimens. The
characteristics were used to calculate the damping and
dynamic stiffness parameters. The specimens would be placed
on the seismic mass and a steel element constituting the
vibrating mass would be placed on them. All the specimens of
the same type would be arranged in the same precisely
specified way. Because of the small size of the cylindrical
specimens, four such specimens would be tested simulta-
neously in order to determine their elasto-dissipative properties.
The specimens would be arranged to form a square with a
side of 14 cm. This ensured the uniform loading of the
specimens during the dynamic tests. The cuboidal specimens
would be arranged in pairs parallel to one another so that the
vibrating mass oscillated along the vertical axis.