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1-16 of 16
Keywords: Brazilian test
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Proceedings Papers
Experiments to Determine Static and Dynamic Tensile Strength of Deccan Trap Rocks, India
Available to Purchase
Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-120
... of rocks in Deccan trap region which is mainly composed of Basalt. In this paper, characterization of tensile behaviour of Basalt rocks from Deccan trap is done at different loading conditions. Indirect test method namely Brazilian test is used to calculate the static indirect tensile strength at a loading...
Proceedings Papers
An Analytical Study of Failure of Transversely Isotropic Rock Discs Subjected to Various Diametrical Loading Configurations
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Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-150
... Abstract The indirect (Brazilian) tensile strength test is commonly used in rock engineering and rock mechanics. Most of the research on how to interpret Brazilian test is only valid for isotropic rock. The load may be applied to disc shaped samples through flat platens or curved jaws...
Proceedings Papers
A New Design Test Apparatus for Determining Direct Tensile Strength of Rocks
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-043
... ABSTRACT: In this study, a new apparatus which have new jaw clutch mechanism is designed to determine the direct tensile strength of rocks. The determination of the direct (with new apparatus) and indirect tensile strength as Brazilian test method of travertine rock was carried out...
Proceedings Papers
Hertzian Contact Damage in a Hollow Circular Cylinder
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-064
... estimation of the tensile strength is critical since rock-like geo- and construction materials are much weaker in tension than compression or shear. The direct uniaxial pulling test (DPT), the split cylinder test also refereed as the Brazilian test (BT), the point load strength test (PLST), and lateral...
Proceedings Papers
A Numerical Modelling Study for Determining Ideal Size and Geometry of Dog Bone Shaped Direct Tensile Strength Test Rock Specimens
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-048
... strength (Brazilian) test is the most famous ITS determination method because of its practicality and ability to be carried out using conventional press equipments. Specimen preparation impracticality can be accepted to make some other ITS testing methods be not widely applied. One of the reasons...
Proceedings Papers
Laboratory Investigations of Fracture Toughness and Tensile Strength for Various Rock Types
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Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-031
... role in brittle fracturing. The Cracked Chevron-Notched Brazilian Disc (CCNBD) samples were tested to determine the fracture toughness of monsonite and sandstone samples. Since conducting fracture toughness tests are quite hard compared with the Brazilian test, the tensile strength can be determined...
Proceedings Papers
Investigation on Tensile Failure Behavior of Frozen Sandstone in Brazilian Test Via Acoustic Emission Monitoring
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Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-130
... by Ojdrovic & Petroski (1985), and they believed the results from two tests were close. Proveti & Michot (2006) concluded the Brazilian test was well suited to measure the fracture resistance of materials at room temperature. However, most of researches were performed at room temperature...
Proceedings Papers
Numerical Simulation of Thermo-Mechanical Behavior of Rock Using a Grain-Based Distinct Element Model
Available to Purchase
Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-116
... grain and interface were calibrated based on the experimental results of UCS and Brazilian tests at room temperature. For implementation of the mechanical analysis, a commercial code UDEC based on DEM theory was adopted in the present study. With the microstructures and a set of micro-parameters...
Proceedings Papers
The Rock Cutting Process of Road Headers – Overview of Laboratory Tests and Numerical Simulation
Available to PurchaseGerhard Pittino, Robert Galler, Markus Mikl-Resch, Richard Tichy, Werner Ecker, Thomas Antretter, Martin Gimpel, Hubert Kargl
Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-040
... wave reflection and unrealistic interference. Fitting the yield function numerically to stress states that cause fracture calibrates the constitutive equations. These stress states are obtained from inexpensive Brazilian tests and uniaxial compression tests. The tensile strength concept is extended...
Proceedings Papers
Evolution of Damage on Tensile Fracturing of Rock by Means of Elastic Ultrasonic Wave Velocity
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-045
.... As micro-cracking and damage directly influence the rock elastic properties and elastic wave velocities, the ultrasonic properties of rock under loading provide a clear view of the development of micro-fracturing. The Brazilian test has been used to apply indirect tensile loading and has been coupled...
Proceedings Papers
Fracturing and Indirect Tensile Strength of Brittle and Ductile Rocks
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Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-049
.... As the Brazilian test has been criticized since it was initially proposed by ISRM, the aim of this study to investigate the accuracy of Brazilian jaws to determine the BTS values of brittle and ductile rocks separately. FRANC2D software was used to analyse the stress distribution at the centre of disk specimens...
Proceedings Papers
Influence of Water Vapor Pressure in Surrounding Environment on Strength and Fracture Toughness of Rocks
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Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-042
... Abstract In this paper, firstly, uniaxial compression test and Brazilian test of rock were conducted to investigate the influence of surrounding non-atmospheric environments on uniaxial compressive strength and tensile strength. The environments used in this paper were organic vapor, inorganic...
Proceedings Papers
Mechanical Characterization of Schistose Rocks
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Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-025
... Shear Zone, India. Applicability of point load and block punch index tests in predicting uniaxial compressive strength of these rocks was also evaluated. For every available angle (β) between foliations and collected core axis (when β≠ 0°), equivalent specimens were tested under Brazilian test condition...
Proceedings Papers
A Few Remarks On Underground Openings Affected By Low Temperature Due To LNG Storage
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Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-051
... test, 30 × 60 mm for the uniaxial compression test, and 30 × 30 mm for the Brazilian test. Specimens were prepared as "dry" by drying for one week in a desiccator, and as "wet" by being kept in a desiccator filled with distilled water for 5 hours using a vacuum pump. The physical properties...
Proceedings Papers
Geomechanical Properties Of Basalts From The Volcanic Complex Of Lisbon - Some Interesting Correlations
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Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-100
... geomechanics strength variation coefficient wellbore integrity Brazilian test basalt MPa ISRM Commission tensile strength Lisbon compressive strength indirect tensile strength test conversion factor Wellbore Design Rock mechanics volcanic complex uniaxial compressive strength geomechanical...
Proceedings Papers
Assessment of the Geotechnical Properties of the Weathered Rocks At Historical Monuments In Korea
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Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-175
... of twelve cores having 50mm diameter and 25mm thickness, were prepared for the Brazilian test which was adopted in this study because tensile failure is more sensitive to the effect of weathering than the compressive failure (Park, 1994). A literature review showed a variety of artificial weathering...