DYMAT 2009
Volume 1, 2009
DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) 331 - 336
Section Experimental Techniques
Published online 15 September 2009
DYMAT 2009 (2009) 331-336
DOI: 10.1051/dymat/2009046

A comparison of the quasistatic and dynamic compressibilities of wet and dry vermiculite

S.M. Walley and W.G. Proud

SMF Fracture and Shock Physics Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, UK

Published online: 15 September 2009

Wet and dry vermiculite granules were compressed both dynamically and quasistatically in a steel powder-compression cell. The compressibility was found to depend both on strain rate and water content. The wet vermiculite was less compressible than the dry. Vermiculite (both wet and dry) was also less compressible under dynamic loading. The stress supported by discs of vermiculite pre-compressed to a density of 2445 kg m−3 was found to be around 90 MPa at a strain rate of around 4000 s−1 using a split Hopkinson pressure bar.

© EDP Sciences 2009