... the challenges related to swelling are, however, reflected in the boundary conditions of test procedures and the internal modifications on the test apparatus, the preparation procedure, and in the choice of specimen size/mass. This manuscript reviews the adopted methodologies and highlights the advantages...

... normal stiffness was found to be about 11 300 kN/mm derived from normal loading up to 4.5 MN using a steel specimen. The direct shear testing performance under the CNS configuration was evaluated using the steel specimen, which had a joint with a known angle of inclination. The normal load error at 3.9...

... the caprock for deep hydrocarbon reservoirs and also the primary seal for Smeaheia, a candidate site for CO 2 storage in the North Sea. Four specimens from Rurikfjellet and one specimen from Draupne were tested. Results of the tests shows that the peak friction coefficient for fractures in Rurikfjellet...

... specimen sudan government environmental science 833 porosity resistance theory absorption determination water absorption Mechanics and Rock Engineering, from Theory to Practice IOP Publishing IOP Conf. Series: Earth and Environmental Science 833 (2021) 012029 doi:10.1088/1755-1315/833/1/012029...

... & gas gneiss reservoir characterization s-gneiss symmetry geology specimen geological subdiscipline practice iop publishing iop conf rock engineering orientation matrix geologist europe government metamorphic rock deformability equation anisotropy rock type reservoir geomechanics...

.... The analysis is initially based on laboratory tests (compressional and petrographic analysis) carried out on quartz-mica schist specimens taken from Central Otago in New Zealand, and is subsequently compared to international experimental studies on schist. The results show that the foliated fabric produces...

... & mining environmental science 833 geological subdiscipline stability alejano lr geometry flexural specimen equation instability fos rock mech Mechanics and Rock Engineering, from Theory to Practice IOP Publishing IOP Conf. Series: Earth and Environmental Science 833 (2021) 012004 doi:10.1088...

... fluid hydraulic fracturing upstream oil & gas germany government europe government sedimentary rock geology rock type reservoir geomechanics uniaxial compressive strength strength environmental science 833 rock engineering experiment geological subdiscipline specimen theory...

... Abstract Posiva Oy has conducted investigations into excavation damage, including comprehensive laboratory testing of physical properties of rock specimens from excavation damaged rock mass. Laboratory testing was conducted on drill core specimens extracted from the excavated surface...

... propagation. In order to extend the p CT concept to complementary geometries with potential interest we studied an alternative to the SCB specimen, which we call pseudo -SCB ( p SCB). To compute K IC in this configuration we have derived the corresponding dimensionless stress intensity factor function...

... Abstract Kuru granite is strong and brittle so that it is prone to strain burst. A series of laboratory tests were carried out to investigate the fracturing process in both pre- and post-peak stages under uniaxial compression. The progressive fracturing in the cylindrical specimens...

... specimen shear displacement reservoir characterization theory experiment environmental science 833 replica parametrisation displacement shear strength repository knowledge management practice iop publishing iop conf rock engineering fracture geometry Mechanics and Rock Engineering, from...

... temperatures respectively of 50 and 90°C) and thermo-chemical treatment. Thermo-chemical treatments were performed by soaking the specimens in a 5x10 −6 mol/l solution of sulphuric acid at pH=5 to simulate the acid rain behavior, at constant target temperatures, for one week. In general, for each weathering...

... Abstract Medium- and low-level radioactive waste is stored in the subsurface galleries of a granitic formation in Southern Hungary. The main lithology is monzogranite. The present study focuses on the thermal behavior and characteristics of intact rocks and thermally exposed specimens...

... criteria (i.e. Hoek-Brown) evolution with specimen size. This obvious lack of data can be attributed to the difficulties of having available Hoek’s cell of different sizes. With the aim of filling this void, the authors have carried out sets of around 25 stress-strain triaxial tests on intact 30, 38, 54...

... the photoelastic analysis, all the experiments were complemented with a specially-designed experimental setup consisting in two orthogonally arranged circular polarizers placed on both sides of the tested specimens. Using a source of white (polychromatic) light on one end it is possible to record the stress...

..., dimensional and lithological variability. Such a variability, together with the presence of rock inclusions of different lithologies and dimensions, makes the collection of representative high-quality specimens for laboratory tests very challenging. As a consequence, the determination of the geomechanical...

... (DIC) data to describe the evolution of damage and cracking in response to tensile loading during multi-stage relaxation experiments on inverted single edge notch bending (iSENB) specimens. The source locations of the AEs correspond to a process zone ahead and around the notch indicating the evolution...

... Abstract An experimental study was undertaken to explore the effects of weak laminations on the fragmentation of impacting rocks. In this work, the fragmentation behavior of manufactured disc specimens of laminated travertine marble is described according to variations in the lamination bond...

... publishing iop conf strength theory specimen tcr rqd rock mech numerical modeling geology reservoir characterization engineering applicability isrm Mechanics and Rock Engineering, from Theory to Practice IOP Publishing IOP Conf. Series: Earth and Environmental Science 833 (2021) 012194 doi...