Journal Published Online: 16 December 2019
Volume 43, Issue 5

Effect of Specimen Preparation on Volumetric Behavior of Sands under Cyclic Multidirectional Shear

CODEN: GTJODJ

Abstract

Laboratory specimen preparation methods can significantly influence the dynamic shear-induced volumetric response of sands. In this study, a medium dense to very dense Ottawa sand (relative density, DR = ∼60–95 %) was systematically tested using a multidirectional cyclic direct simple shear device to evaluate the influence of specimen preparation on drained cyclic volumetric strain. Both unidirectional and bidirectional cyclic loads were applied to specimens created using four preparation techniques: dry funnel deposition, dry soil raining, dry funnel deposition followed by table vibrations, and dry funnel deposition followed by cyclic shearing. The results indicate that as DR increases, the effect of specimen preparation on volumetric strain decreases. Specifically, the results illustrate that volumetric strain of medium dense sand (DR = 57–74 %) is affected by specimen preparation, which is consistent with the literature. In contrast, dense to very dense specimens (DR > 80 %) exhibited comparable volumetric strain independent of the specimen preparation method. This observation is consistent for both unidirectional and bidirectional cyclic loading.

Author Information

Bhaumik, Lopamudra
Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
Rutherford, Cassandra J.
Department of Civil, Construction, and Environmental Engineering, Iowa State University, Ames, IA, USA
Olson, Scott M.
Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
Hashash, Youssef M. A.
Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
Cerna-Diaz, Alfonso
Gulf/Southwest Region Water Business Line, AECOM, Greenwood Village, CO, USA
Numanoglu, Ozgun A.
Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
Weaver, Thomas
Office of Research, U.S. Nuclear Regulatory Commission, Two White Flint North, Rockville, MD, USA
Pages: 19
Price: $25.00
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Stock #: GTJ20190008
ISSN: 0149-6115
DOI: 10.1520/GTJ20190008