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

S.M. Walley; W.G. Proud

doi:doi:10.1051/dymat/2009046

All issues

Volume 1 (2009)

10.1051/dymat/2009046

Abstract

Issue		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
DOI		https://doi.org/10.1051/dymat/2009046
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

Abstract
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.