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Keywords: specimen
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Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-019
... Oil & Gas 13th international congress specimen shear stress rock mechanics isrm13 EXPERIMENTAL AND THREE-DIMENSIONAL NUMERICAL STUDIES OF THE ANCHORAGE PERFORMANCE OF ROCK BOLTS *Yu Chen, and Charlie C. Li Department of Geology and Mineral Resources Engineering Norwegian University of...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-016
... Upstream Oil & Gas SCB specimen fracture toughness test result hydraulic fracturing specimen size strength Thickness constant value size effect 13th international congress sandstone SCB test rock mechanics isrm13 Kimachi sandstone specimen Montreal Kataoka Kuruppu...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-007
... Abstract We present an analysis of the mechanical properties of coal specimens from various coalfields and seams in South Africa. Our database comprises of 1800 test results from uniaxial and triaxial compression tests, as well as indirect tensile strength tests, which we collected from the...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-023
... both non-reinforced and reinforced cemented paste specimens. Portland cement (3% to 5% by weight of tailings) and five different types of ductile materials (0 to 0.5% by weight of solids) were employed in this experiment for the specimen preparation. The test results showed that inclusion of ductile...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-008
... borehole breakouts in triaxial stress regimes (McDonnell & Haramy, 1988), or to develop coal pillar reinforcement designs on an experimental basis (Dolinar, 1993). metals & mining strength cement mechanical laboratory study mathey 13th international congress specimen Montreal...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-029
... Upstream Oil & Gas linkage tensile crack Wellbore Design anisotropic behaviour shear crack joint continuity factor uniaxial compression reservoir geomechanics 13th international congress specimen jointed rock mass Reservoir Characterization rock mechanics isrm13 strength peak...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-050
... Design strength dilation behavior tensile strength failure mechanism cohesion brittle rock rock mechanics isrm13 hydraulic fracturing fracture pattern 13th international congress specimen grain boundary Simulation Test Simulation friction angle SIMULATION OF DILATION BEHAVIOR OF BRITTLE...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-041
... Reservoir Characterization isotropic compression deformation radial strain in-situ stress rock mechanics isrm13 reservoir geomechanics Upstream Oil & Gas 13th international congress specimen mechanical behaviour rock burst structural geology axial loading Zhang deformation...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-057
... Abstract In this paper, a number of experimental tests are carried out to study the strength difference on rectangular prismatic marble specimens with different height-to-width ( H/W ) rations. The specimens have a nominal size of 45 × 15 mm in the compressive cross-section ( W × T ) and...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-119
... is the split Hopkinson pressure bar 37mm in diameter with a low-temperature circulator. Due to the low strength of frozen soil, aluminum is chosen to manufacture the incident and transmission bars. During the SHPB tests, the specimen of frozen clay is placed in a low-temperature circulator to ensure...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-089
... studies have observed that the size effects of the constituent particles are significant on the cracking behavior of the rock specimens. To further investigate the size effects, the bonded-particle model (BPM), which is based on the discrete element method (DEM), is adopted in the present research. In...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-109
... Abstract Coupon testing has been used to investigate stress corrosion cracking (SCC) of rockbolts in a laboratory based experimental program. This program has focused on the use of ASTM G39 three- and four-point bent beam coupon specimens, immersed in an acidified sodium chloride test solution...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-058
... the CAEH method is that the method removes the user's subjective judgment. To verify the CAEH method, uniaxial compression tests with AE measurement using 77 crystalline rock specimens were conducted. The test specimens cover eight rock classes with different mineral grain distributions. Crack...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-038
... Stiffness (LSS). In this research, Loading System Reaction Intensity (LSRI) was proposed as an indicator to identify stable and unstable failure. Secondly, unstable rock failure under true-triaxial unloading condition was simulated. A rock specimen was loaded in three directions; the lateral pressures (σ 3...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-110
...-saturated specimen was much greater than that of the dry specimen. It also was found that the creep behavior of the water-saturated specimen was similar to that of polycrystalline ice. These show that deformation of the water-saturated specimen is strongly affected by pore ice. The UCS of the water...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-092
... wellbore integrity 13th international congress assumption reservoir geomechanics Upstream Oil & Gas specimen hydraulic fracturing Rock mechanics crack front mode-i fracture toughness measurement principal stress distribution rock mechanics isrm13 Reservoir Characterization...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-164
... and bolt specimens. However, to accurately assess the rock bolt contribution, scale effect has to be accounted for. For this reason full scale lab tests are required as an alternative to in situ tests for which boundary conditions are more difficult to control. In this paper the results of an...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-144
... the fractures. The fracture propagation has not been investigated thoroughly. In this study, a water injection system was designed to measure unstable crack growth; hence, the deformation of the specimens had to be controlled using a variable injection rate. Furthermore, an acoustic emission...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-139
... the description of the proposed method, the evaluation of deformation in a lignite specimen due to immersion in water was presented as an application example. As the 3-D imaging technique, micro-focus X-ray CT was applied. The result showed that the induced dilatational strain field due to the...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-165
... out to ascertain the transition from one mode to another for Semi-circular bend setup. Laboratory investigation is carried by varying the span length (s/2R); crack length (a/R); notch angle and notch thickness (t). The specimen consists of cement, sand and water mixture in a ratio of 1:1:0.5 by weight...

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