compressive strength rock core

  • Standard Test Method for Unconfined Compressive Strength …

    Standard Test Method for Unconfined Compressive Strength of Intact Rock Core Specimens1 This standard is issued under the fixed designation D 2938; the number immediately following the designation indicates the year of original adoption or, in …

  • 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.

  • ASTM D7012 - 14e1 Standard Test Methods for Compressive ...

    5.2 Method C, uniaxial compressive strength of rock is used in many design formulas and is sometimes used as an index property to select the appropriate excavation technique. Deformation and strength of rock are known to be functions of confining pressure. Method A, triaxial compression test, is commonly used to simulate the stress conditions under which most underground rock …

  • Standard Test Method for Unconfined Compressive Strength ...

    1.1 This test method specifies the apparatus, instrumentation, and procedures for determining unconfined compressive strength of intact rock core specimens. 1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are for information only.

  • ASTM-D2938 | Standard Test Method for Unconfined ...

    1.1 This test method specifies the apparatus, instrumentation, and procedures for determining unconfined compressive strength of intact rock core specimens. 1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are for information only.

  • Compressive strength of rocks - PetroWiki

    Estimating compressive strength. General rock failure criterion can be reduced to a few parameters dependent on lithology (m) and the uniaxial compressive strength (C 0). Lithology is commonly derived during log analysis, so m may be estimated (Table 1). What is needed still is an initial measure of rock strength provided by C 0.

  • ASTM-D2938 | Standard Test Method for Unconfined ...

    1.1 This test method specifies the apparatus, instrumentation, and procedures for determining unconfined compressive strength of intact rock core specimens. 1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are for information only.

  • Suggested Methods for Determining the Uniaxial …

    the Uniaxial Compressive Strength and Deformability of Rock Materials PART 1. SUGGESTED METHOD FOR DETERMINATION OF THE UNIAXIAL COMPRESSIVE STRENGTH OF ROCK MATERIALS 1. SCOPE This method of test is intended to measure the uni- axial compressive strength of a rock sample in the form of specimens of regular geometry.

  • USING THE POINT LOAD TEST TO DETERMINE THE …

    the uniaxial compressive strength (UCS), and to propose appropriate Is50 to UCS conversion factors for different coal measure rocks. The rock strength determined by the PLT, like the load frame strengths that they estimate, are an indication of intact rock strength and not necessarily the strength of the rock mass. THE UNIAXIAL COMPRESSIVE ...

  • Laboratory Testing and Interpretation of Rock Properties

    Triaxial compressive strength without pore pressure T 226 D 2664 Creep Tests Creep-cylindrical hard rock core in uniaxial compression - D 4341 Creep-cylindrical soft rock core in uniaxial compression - D 4405 Creep-cylindrical hard rock core, in triaxial compression - D 4406 Tensile Strength Direct tensile strength of intact rock core specimens ...

  • Laboratory Testing of IntactLaboratory Testing of Intact Rocks

    strength, stiffness, and durability. ... Laboratory Testing of RocksLaboratory Testing of Rocks • Index testing of intact rock materials for identification & classification. •Strength and stiffness characteristics ... • Diametrical compression of rock core specimens acrossspecimens across Page. 8-5. Brazilian Split-Tension Test on ...

  • (PDF) Estimating the modulus of elasticity of the rock ...

    Estimating the modulus of elasticity of the rock material from compressive strength and unit weight. ... rock strength is greater than its individual static or dynamic strength if the axial ...

  • Uniaxial Compressive Strength - an overview ...

    Uniaxial compressive strength (UCS) is a key physical test relevant to iron ore crusher design and rock geomechanics for mining. Tests are typically performed on intact lengths of NQ, HQ, or PQ diamond drill core and record the maximum axial load sustained at the point of failure.

  • Standard Test Method for Splitting Tensile Strength of ...

    Standard Test Method for Splitting Tensile Strength of Intact Rock Core Specimens1 This standard is issued under the fixed designation D 3967; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last ...

  • Chapter 4 Engineering Classification of Rock Materials

    Table 4D–6 Hardness and unconfined compressive strength 4D–3 Table 4E–1 Line survey data 4E–1 Table 4E–2 Joint set spacing categories 4E–1 Part 631 National Engineering Handbook Engineering Classification of Rock Materials Chapter 4 (210–VI–NEH, Amend. 55, January 2012) 4–v

  • Lecture 9 – Introduction to Rock Strength David Hart ...

    • The peak stress is the strength of the rock. – It may fail catastrophically if the load frame is “soft”. Example below is for a “stiff” frame. • The compressive strength of rock is a function of the confining pressure. • As the confining pressure increases so does the strength. Goodman, Intro to Rock …

  • Standard Test Method for Triaxial Compressive Strength of ...

    Triaxial Compressive Strength of Undrained Rock Core Specimens Without Pore Pressure Measurements1 This standard is issued under the fixed designation D 2664; the number immediately following the designation indicates the year of original adoption or, in …

  • Compressive Strength Test on Concrete Core - Calculation ...

    The diameter of the core specimen for the determination of compressive strength in load bearing structural members shall be at least 3.70 inch[94 mm]. For concrete with nominal maximum size of aggregate greater than or equal to 1.5 inch[37.5 mm], the preferred minimum core diameter ...

  • Rock Testing Lab Services, Rock Engineering | GeoTesting ...

    Standard Test Method for Triaxial Compressive Strength of Undrained Rock Core Specimens Without Pore Pressure Measurements **ASTM has discontinued this method, the industry-accepted standard test method is now ASTM D7012A: ASTM D2664: Shear Strength, Young's Modulus, Cohesion intercept, Angle of Internal Friction ...

  • 8. STRENGTH OF SOILS AND ROCKS

    out for rock. In a direct tensile strength test a cylindrical rock specimen is stressed along its axis by means of a tensile force. The tensile strength is then calculated as the failure tensile force divided by the cross-sectional area. It has been found that a rock core will split along a diameter when loaded on its side in a compression machine.

  • Standard Test Method for Triaxial Compressive Strength of ...

    Triaxial Compressive Strength of Undrained Rock Core Specimens Without Pore Pressure Measurements1 This standard is issued under the fixed designation D 2664; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

  • Rock Testing Lab Services, Rock Engineering | GeoTesting ...

    Standard Test Method for Triaxial Compressive Strength of Undrained Rock Core Specimens Without Pore Pressure Measurements **ASTM has discontinued this method, the industry-accepted standard test method is now ASTM D7012A: ASTM D2664: Shear Strength, Young's Modulus, Cohesion intercept, Angle of Internal Friction ...

  • 8. STRENGTH OF SOILS AND ROCKS

    out for rock. In a direct tensile strength test a cylindrical rock specimen is stressed along its axis by means of a tensile force. The tensile strength is then calculated as the failure tensile force divided by the cross-sectional area. It has been found that a rock core will split along a diameter when loaded on its side in a compression machine.

  • Compressive Strength of Rock Cores at Natural Moisture ...

    Section 7.3 deals with moisture conditioning. Since the concrete cores are obtained in much the same manner as NQ & NX (wet) rock coring techniques - we often follow this method for testing the unconfined compressive strength of rock cores.

  • ASTM-D7012 | Standard Test Methods for Compressive ...

    1.1 These four test methods cover the determination of the strength of intact rock core specimens in uniaxial and triaxial compression. Methods A and B determine the triaxial compressive strength at different pressures and Methods C and D determine the unconfined, uniaxial strength.

  • Compressive Strength Test on Concrete Core - Calculation ...

    The diameter of the core specimen for the determination of compressive strength in load bearing structural members shall be at least 3.70 inch[94 mm]. For concrete with nominal maximum size of aggregate greater than or equal to 1.5 inch[37.5 mm], the preferred minimum core diameter ...

  • Prediction of Uniaxial Compressive Strength from well ...

    The UCS of total 84 coal and non-coal core samples have been determined in the Rock Mechanics Laboratory of the Department of Mining Engineering, Indian School of Mines, Dhanbad following the specification outlined in “Suggested Methods for Determining the Uniaxial Compressive Strength and Deformability of Rock Materials: Part 1 – Suggested ...

  • Laboratory Services | GeoTesting Express | Geocomp

    Standard Test Method for Triaxial Compressive Strength of Undrained Rock Core Specimens Without Pore Pressure Measurements **ASTM has discontinued this method, the industry-accepted standard test method is now ASTM D7012A: ASTM D2664: Shear Strength, Young's Modulus, Cohesion intercept, Angle of Internal Friction ...

  • CLASSIFICATION // CHARACTERIZATION OF SOME ROCK …

    of the core is observed or suspected, its nature and degree should be recorded after the description of the basic parameters. Intact rock strength . The uniaxial compressive strength of a rock material constitutes the highest strength limit of the rock mass of which it forms a part.

  • Correlations Between Index Properties and Unconfined ...

    Correlations Between Index Properties and Unconfined Compressive Strength of Weathered Ocala Limestone Raoaa Farah University of North Florida This Master's Thesis is brought to you for free and open access by the Student Scholarship at UNF Digital Commons. It has been accepted for inclusion in UNF Graduate Theses and Dissertations by an authorized

  • Authors: Raoaa FarahAbout: Rock mechanics · Indexation · Strength of materials
  • (PDF) Standard Test Method for Compressive Strength and ...

    Designation: D 7012 – 04 Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures1 This standard is issued under the fixed designation D 7012; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

  • LABORATORY TESTS FOR DETERMINING STRENGTH OF ROCKS

    Following are common laboratory tests for determining strength of rocks: Unconfined compression tests for rocks Triaxial compression test for rocks Splitting tension test for rocks Beam bending test for rocks Ring shear test for rocks This …

  • Compressive Strength - an overview | ScienceDirect Topics

    High level of hardness and high compressive strength. The Young modulus of volcanic rocks stands between 12,890 and 65,070 MPa, with an average of 32,478 MPa. The Poisson ratio is between 0.18 and 0.31 with an average of 0.23. The rock compressive strength is 87–539 MPa, with 271 MPa on average.

  • Estimating thestrength ofrock materials - SAIMM

    ingtheuniaxial compressive strength of rock for practical engineering purposes. Table IVlists the corres-ponding strength ranges for the strength classification of rock ma-terials8. ESTIMATION OF THE TRIAXIAL STRENGTH While determination ofthe uni-axial compressive strength ofrockis a simple matter, this is not true for the collection of the ...