Experiments with rock: Remarks on strength and stability issues

In the classical work of Fairhurst and co-workers on machine stiffness, it was shown that the failure response of a rock specimen can be a mixture of material and structural behavior. This is due to the development, around peak stress, of a localized region of microcracking called the intrinsic zone...

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Bibliographic Details
Published inInternational journal of rock mechanics and mining sciences (Oxford, England : 1997) Vol. 44; no. 4; pp. 525 - 537
Main Authors Labuz, J.F., Biolzi, L.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.06.2007
Elsevier Science
Subjects
Acoustic emission
Applied sciences
Buildings. Public works
Exact sciences and technology
Flexural testing
Geotechnics
Intrinsic zone
Localization
Plane-strain testing
Size effects
Soil mechanics. Rocks mechanics
Speckle interferometry
Uniaxial tensile testing
Uniaxial tensile testing
Flexural testing
Acoustic emission
Plane-strain testing
Size effects
Localization
Speckle interferometry
Intrinsic zone
Rock mechanics
Stability
Experimental study
Compression test
Tension test
Failure analysis
Plane strain
Size effect
Strength
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Summary:In the classical work of Fairhurst and co-workers on machine stiffness, it was shown that the failure response of a rock specimen can be a mixture of material and structural behavior. This is due to the development, around peak stress, of a localized region of microcracking called the intrinsic zone, which may be a property of the rock. The inhomogeneity formed by the intrinsic zone has a fundamental importance for defining the system behavior in terms of material strength and post-peak instability such that size effects appear. In addition, the testing environment, that is, the load frame, with its finite stiffness and load arrangement, has an impact on the overall response. Observations of the intrinsic zone are presented, and the topics of strength and stability are discussed in relation to tensile and compressive testing of rock.
ISSN:1365-1609
1873-4545
DOI:10.1016/j.ijrmms.2006.09.005