Chapter
Apr 26, 2012
A Simple Method of Rock Properties Testing
Authors: Wei Wang [email protected], Weiya Xu [email protected], Stephane Corn [email protected], and Patrick Ienny [email protected]Author Affiliations
Publication: Instrumentation, Testing, and Modeling of Soil and Rock Behavior
Abstract
Microindentation is regarded as an efficient method to identify the mechanical properties of materials. However, its application to geomaterials, such as rock and concrete, is still an open issue in recent years. In this study, a microindentation device named Rochart is developed in order to characterize the nonlinear elasto-plastic behaviour of rocks. The application to a large number of rocks is shown in comparison of traditional test results. Taking into account the triaxial stress condition of rocks, the device is also designed to conduct the microindentation test with confining pressure by adding a pressure cell. The description of the machine and its calibration procedure are presented is this paper. The microindentation tests under different confining pressures are carried out on a typical rock — sandstone. The obtained curves show a confining pressure sensitive behavior of rocks in microindentation tests.
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© 2011 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Lecturer, Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Geotechnical Research Institute, Hohai University, XikangRoad 1#, Nanjing, Jiangsu 210098, P.R.China.E-mail: [email protected]
Professor, Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Geotechnical Research Institute, Hohai University, XikangRoad 1#, Nanjing, Jiangsu 210098, P.R.China.E-mail: [email protected]
Lecturer, CMGD, Ecole des Mines d'Alès, 6, Avenue de Clavières, F-30319, Alès cedex, France.E-mail: [email protected]
Lecturer, CMGD, Ecole des Mines d'Alès, 6, Avenue de Clavières, F-30319, Alès cedex, France.E-mail: [email protected]
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