BALLOON DENSITY APPARATUS

▪ Used to determine the inplace density and unit weight of compacted or
firmly bonded soil.
▪ Suitable for use as a means of acceptance for compacted fill or
embankments constructed of fine-grained soils or granular soils without
appreciable amounts of rock or coarse material.
▪ Also may be used for the determination of the inplace density and unit
weight of undisturbed or in situ soils, provided the soil will not deform
under the pressures imposed during the test.