The compressive behavior of granular materials has been evaluated under a variety of conditions. Granules were formulated using two size fractions of two different particulate materials prepared with a polydimethylsiloxane binder ranging in viscosity from 12-2413 Pa.s. The solids content of the granules was maintained constant at 90% in all cases studied. Granules were compressed at three different velocities (1, 10, and 100 mm/s). At these high viscosities, characteristics of the binder appear to have the greatest impact on granular behavior. Through similar to 300 Pa.s, the granule strength increases with increasing viscosity. Above this critical viscosity, however, the granular strength remains approximately constant within a given set of test parameters. The compression velocity also impacts the granular strength, as do the size and shape of the particulate inclusions (though to a lesser extent). (C) 2016 Elsevier B.V. All rights reserved.