Investigating the effect of cyclic loading on the indirect tensile strength of rocks

Erarslan, N. and Williams, D. J. (2012) Investigating the effect of cyclic loading on the indirect tensile strength of rocks. Rock Mechanics And Rock Engineering, 45 3: 327-340. doi:10.1007/s00603-011-0209-7

Author Erarslan, N.
Williams, D. J.
Title Investigating the effect of cyclic loading on the indirect tensile strength of rocks
Journal name Rock Mechanics And Rock Engineering   Check publisher's open access policy
ISSN 0723-2632
Publication date 2012-01-01
Year available 2011
Sub-type Article (original research)
DOI 10.1007/s00603-011-0209-7
Volume 45
Issue 3
Start page 327
End page 340
Total pages 14
Place of publication Vienna, Austria
Publisher Springer
Language eng
Abstract This paper presents the results of laboratory experiments during the investigation of the stress-strain characteristics of Brisbane tuff disc specimens under diametral compressive cyclic loading. Two different cyclic loading methods were used: namely, sinusoidal cyclic loading and cyclic loading with increasing mean level. The first method applied the S-N curve approach to the indirect tensile strength (ITS) of rock specimens for the first time in the literature, and the second method investigated the effect of increasing cyclic loading on the ITS of rock specimens. The ITS of Brisbane tuff disc specimens was measured using the Brazilian tensile strength test. The reduction in ITS was found to be 33% with sinusoidal loading tests, whereas increasing cyclic loading caused a maximum reduction of 37%. It is believed that the fracturing under cyclic loading starts at contact points between strong grains and weak matrices, and that contact points at grain boundaries are the regions of stress concentration (i.e., indenters). Transgranular cracks emanate from these regions and intergranular cracks sometimes pass through the contact points. Once cracking begins, there is a steady progression of damage and a general 'loosening' of the rock, which is a precursor to the formation of intergranular cracks.
Keyword Brazilian indirect tensile strength
Cyclic loading
Rock fatigue
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online 29 November 2011.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2012 Collection
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Citation counts: TR Web of Science Citation Count  Cited 17 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 19 times in Scopus Article | Citations
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Created: Fri, 20 Jan 2012, 01:43:27 EST by Jeannette Watson on behalf of School of Civil Engineering