... Abstract The paper describes the investigation results on specific strain energy in hard rocks (urtite, ijolite and apatite-nepheline ore) under uniaxial compression, tension and triaxial compression. The ways of strain energy accumulation have been shown in the investigated rock samples under...

... Abstract Based on laboratory testing of bedded specimens made of artificial geomaterial, meta-siltstone and schist subjected to uniaxial compression and triaxial compression by the Karman scheme, the deformation and strength characteristics of the materials are determined as functions...

... ABSTRACT: A series of monotonic uniaxial compression tests under quasi-static loading conditions on Hawkesbury sandstone specimens were conducted. To accurately measure pre-peak and post-peak stress-strain behaviour, lateral strain-controlled test at a prescribed constant loading rate were...

.... A series of Brazilian, 3-point bending and uniaxial compression creep experiments were carried under both dry and saturated conditions. During these tests, Acoustic Emission (AE) measurements were also conducted to investigate the fracturing phenomenon. The authors present the outcomes of the creep...

... through experimental (e.g. Bobet & Einstein 1998a and Wong & Einstein 2009) and numerical approaches (e.g. Bobet & Einstein 1998b and Zhang & Wong 2012). Wong & Einstein (2009) give an in-depth review on cracking behavior in specimens containing a single flaw under uniaxial compression...

... Abstract The paper describes the results of hard rock samples testing (Khibiny massif, Kola Peninsula) under uniaxial compression. We have established the main failure modes of the samples with height-to-diameter ratios 2:1 and 1:1. The influence of the structure features and texture...

... reflects the energy storage ability in pre- peak phase of the uniaxial compression stress-strain curve of rock specimen. Impact energy index consid- ers the relationship between energy storage in pre-peak phase and energy dissipation in post-peak phase (Tang, L. Z. & Wang, W. X. 2002). However, these rock...

... the reversible character of the deformations of rocks was contacted with a barrel-shaped straining of samples at uniaxial compression (Tomashevskij & Khamidullin 1972). In the works of other researchers, residual stresses were proposed in the capacity of reasons for deformation anomalies of various types...

... over two load/unload uniaxial compression cycles. Segment A, B and C corresponds to the first cycle and C, B, D and Eto the second cycle. ceramic and composite materials have maintained the development of practical applications. In the geotech- nical field (Montoto & Hardy, 1991), most research...

... Abstract Paper presents the results of mechanical tests of carbonate rock samples under quasistatic uniaxial compression. The main objective of the work was to identify two different dissipative processes following failure of rock samples in pre and post critical loading range. Two micro...

... interaction crack initiation stress coalescence process specimen Reservoir Characterization hydraulic fracturing Einstein international journal tensile crack uniaxial compression eurock 2012 Bobet chemical treatment Upstream Oil & Gas Rock mechanics Coalescence Wong flaw propagation...

...Rock Mechanics in Civil and Environmental Engineering Zhao, Labiouse, Dudt & Mathier (eds) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-58654-2 Characteristic acoustic emission response of sandstone samples in uniaxial compression N. Slatalla & M. Alber Engineering Geology, Ruhr...

...Rock Mechanics in Civil and Environmental Engineering Zhao, Labiouse, Dudt & Mathier (eds) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-58654-2 Experimental investigation of crack propagation and coalescence in rock-like materials under uniaxial compression H. Mirzaei, R. Kakaie & S.M.E...

... uniaxial compression interaction ABSTRACT To study crack coalescence mechanism is very important on understanding the basic failure mechanics of brittle solids containing pores under uniaxial compression. In this paper, a series of physical tests of uniaxial compression on samples containing pores...

... ABSTRACT Complete stress-strain curve of rock specimen in uniaxial compression was derived analytically Using displacement method and energy conservation method, respectively. Phenomenon of shear strain localization initiated just at peak stress was considered in the form of a single shear...

... geomechanics shear band triaxial compression boundary MSB uniaxial compression compression ndsz foliation hydrostatic compression test compressive loading deformation stress-strain curve Eurock '96, Barta (ed.) (e) 1996 Balkema, Rotterdam. ISBN 90 5410 843 6 Experimental analysis of natural...