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    Request PDF | Performance of Core Strangle Test (CST) on Porous Rocks | The Core Strangle Test (CST) has been proposed in 2009 by author as an index test permitting indirect estimation of the

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    A new testing method for the indirect determination of unconfined compressive strength (UCS) of rock core samples is presented As known, there exist several methods for indirect estimation of UCS, such as point load index (I s), Schmidt hammer, sonic velocity, block punch strength test, etcAlthough the point load index testing method is widely used to estimate UCS, there are many

  • Cited by: 79
  • Predicting Unconfined Compressive Strength of Intact

    rock mass or intact rock strength including the Equotip hardness tester [7], block punch index test [8], core strangle test [9], nail penetration test [10], and edge load strength test [11] that require a large number of rock samples with a precise size Indeed, specific core

  • Cited by: 6
  • Unconfined Compressive Strength Test of Rock

    This test method specifies the apparatus, instrumentation, and procedures for determining unconfined compressive strength of intact rock core specimens This procedure is identical to ASTM D 2938 except that the cores are tested after cutting without grinding, and neoprene caps are used on the specimen ends Unconfined Compressive Strength Test

  • Unconfined Compression Test | Geoengineer

    Laboratory Procedure
  • Rock Testing Geolabs

    The sample should be sufficient to permit 5 test scratches (10 mm) at least 5 mm from the edge of the rock surface and each test should be 5 mm apart If it is a core, the diameter should be less than 76 mm and length less than 150 mm Ideally size is like a tennis ball

  • THE UNIAXIAL COMPRESSIVE STRENGTH OF SOFT ROCK

    UCS value is about 11 MPa for the (PW) LH rock, whereas the lowest UCS value is about 1 MPa for the (DW) GW rock Table 1 Uniaxial Compression Test Results Rock type Sample Weathering Saturation L/D UCS (MPa) Ave (MPa) DV DV9^ PW Dry 177 1054 978 Sandstone DVR1 PW Dry 200 901 DV33DW^ DW Dry 172 315 372

  • Suggested Methods for Determining the Uniaxial

    This method of test is intended to determine stress strain curves and Young's modulus and Poisson's ratio in uniaxial compression of a rock specimen of regular geometry The test is mainly intended for classification and characterization of intact rock 5 REPORTING OF RESULTS (a) Lithologic description of the rock

  • Empirical correlations for predicting strength

    International Journal of Rock Mechanics and Mining Sciences, 46, (8), 1349 – 1357 101016/jijrmms200904009, [Web of Science ®] , [Google Scholar]) presented an advanced testing process for indirect determination of UCS The test used in the study was core strangle test, which addresses the limitations of point load index testing process

  • (PDF) 2 3 A NeuroGenetic Network for Predicting

    Isik Yilmaz (2009) applied core while it increased with decrease of their porosity strangle test (CST) instead of point load index to Moreover, Bell (1978) concluded that the strength estimate UCS

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    Use of the Core Strangle Test for tensile strength estimation and rock mass classification International Journal of Rock Mechanics and Mining Sciences, 47 (5): 845850 (SCI)

  • A comparative assessment of indirect methods for

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  • trends and digital advances in engineering geology

    The Core Strangle Test (CST) is an index test and mainly unconfined compressive strength indirectly determined when core samples having standard dimensions cannot be obtained In the test, the core samples having a length of 25 mm or more are broken by the load applied through a circle perpendicular to the core axis as a “strangle”

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    Zurück zum Zitat Yilmaz I (2010) Use of the core strangle test for tensile strength estimation and rock mass classification Int J Rock Mech Min Sci 47(5):845–850 CrossRef Yilmaz I (2010) Use of the core strangle test for tensile strength estimation and rock mass classification Int J Rock Mech Min Sci 47(5):845–850 CrossRef

  • trends and digital advances in engineering geology

    The Core Strangle Test (CST) is an index test and mainly unconfined compressive strength indirectly determined when core samples having standard dimensions cannot be obtained In the test, the core samples having a length of 25 mm or more are broken by the load applied through a circle perpendicular to the core axis as a “strangle”

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