1. Hot

    Rock mechanics testing equipment, Controls

    Rock mechanics is an important field of geotechnical engineering as it is the theoretical and applied science concerning the physical behavior of rocks and rock masses. Slopes, tunneling, dams foundations and surface constructions requires the characterization of involved rocks and the analysis of their reaction to induced stresses.

  2. Hot

    determination uniaxial compressive strength of rocks

    The determination of uniaxial compressive strength from point load strength for pyroclastic rocks. S.B. CelikEstimation of uniaxial compressive strength from point load strength, A. BasuEstimation of uniaxial compressive strength of rock materials by index tests using regression analysis and fuzzy inference system.

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    ASTM D7012 - 04 Standard Test Method for Compressive ...

    D7012 - 04 Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures, compression testing, compressive strength, confined compression, loading tests, modulus of elasticity, repeatability, reproducibility, rock, uniaxial compression, Young's Modulus,

  4. Hot

    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 the case of revision, the year of last revision.

  5. Hot

    Rock strength from log parameters - PetroWiki

    An understanding of rock strength is important for designing recovery plans for a reservoir and for developing an appropriate reservoir simulation.A detailed discussion of rock failure can be found in Rock failure relationships and Compressive strength of rocks.But the data needed for these methods may not be readily available, so there is a desire to use data available from well logs that are ...

  6. Hot

    The determination of uniaxial compressive strength from ...

    1. Introduction. The uniaxial compressive strength (UCS) of rock is widely used in various engineering projects performed in rock environment.Although the method is relatively simple, it is time consuming and expensive. It also requires well-prepared rock cores.

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    Determination of c and φ of rocks from indirect tensile ...

    AbstractCohesion (c) and friction (φ) angle are the two key parameters required in numerical simulations and designs of underground openings, excavations, and foundations in rocks. The paper discusses a simple method, based on a theoretical framework, to determine the two parameters from uniaxial compression test and indirect tensile strength test.

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    UNCONFINED COMPRESSIVE STRENGTH OF ROCK SAMPLE (IS …

    Aug 11, 2013· Reference IS-9143-1979-Method for the determination of unconfined compressive strength of rock materials Objective The objective of this test is to determine unconfined compressive strength of rock. This test is primarily done to classify the rock on the basis of strength. Apparatus used Name of equipment Capacity Least count/Accuracy Loading Machine 5000 kN 2.5 N Vernier […]

  9. Hot

    (PDF) Determination of c and Φ of rocks from indirect ...

    Determination of c and Φ of rocks from indirect tensile strength and uniaxial compression tests Article (PDF Available) in International Journal of Geotechnical Engineering 8(1):59-65 · January ...

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    A predictive model for uniaxial compressive strength of ...

    A predictive model for uniaxial compressive strength of carbonate rocks from Schmidt hardness Abstract Uniaxial compressive strength (UCS) is considered to be one of the important parameters in rock engineering projects. In order to determine UCS, direct and indirect techniques are …

  11. Hot

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

    1.1 This test method covers the determination of the strength of intact rock core specimens in uniaxial compression and confined compression. The tests provide data in determining the strength of rock, namely: the uniaxial strength, shear strengths at varying pressures and varying temperatures, angle of internal friction, (angle of shearing ...

  12. Hot

    Assessing Rock Compressive Strength and Predicting ...

    Compressive Strength (UCS). It is one of the most basic parameters of rock strength, and most common determination performed for boreability predictions. The unconfined (or uniaxial) compressive strength (UCS) of a rock is a common measure of the strength of intact rock. It is normally measured on cylinders of rock core by

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    Suggested Methods for Determining the Uniaxial Compressive ...

    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.

  14. Hot

    HOW TO CLASSIFY ROCKS? (ENGINEERING CLASSIFICATION OF ...

    Mar 06, 2015· This method of rock classification was introduced by Deer & Miller in the year 1996. Two parameters are considered while classifying rocks on this method, which are Uniaxial compressive strength Modulus of elasticity Step by Step Method to Classify Rock Based on Engineering Parameters) This method of rock classification consists of 3 steps, as given […]

  15. Hot

    Uniaxial compressive rock strength determination

    Uniaxial compressive rock strength determination Rebound hardness is perhaps the most frequently method used in rock testing to determine uniax-ial compressive strength (UCS). Proceq's RockSchmidt provides not only the possibility of obtain-ing the UCS, but also of sending the complete register data and report direct to the computer.

  16. Hot

    ASTM D7012 - 14e1 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.

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    STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1 ...

    STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1. INTRODUCTION 2. TESTING OF INTACT ROCK FOR STRENGTH 2.1 Uniaxial Compression 2.2 Point Load Testing 2.3 Uniaxial Tension 2.4 Indirect Tension Tests 2.5 Shear Tests 2.6 Confined Compression Tests (Triaxial Tests) 2.7 Biaxial and Multiaxial Tests 2.8 Other Tests 3. PARAMETERS AFFECTING ROCK STRENGTH 4.

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    DEFORMABILITY PROPERTIES OF ROCKS AND ROCK MASSES …

    DEFORMABILITY PROPERTIES OF ROCKS AND ROCK MASSES 1. INTRODUCTION 2. DEFORMABILITY OF INTACT ROCK 2.1 Rock under Uniaxial Compression ... Kazi et al. (1983) proposed an empirical equation relating the uniaxial compressive strength of intact rocks to their dynamic modulus. A statistical analysis of more than 200 tests reported in

  19. Hot

    IS 9143: Method for the determination ... - Internet Archive

    In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them.

  20. Hot

    Compressive strength - Wikipedia

    Compressive strength is measured on materials, components, and structures. By definition, the ultimate compressive strength of a material is that value of uniaxial compressive stress reached when the material fails completely. The compressive strength is usually obtained experimentally by means of a compressive test. The apparatus used for this ...

  21. Hot

    Laboratory Testing and Interpretation of Rock Properties

    Figure 8-2: Uniaxial Compression Test on Rock with (a) Definitions of stress conditions and strains, (b) Derived stress-strain curve with peak stress corresponding to the uniaxial compressive strength (qu = F u) Commentary The uniaxial compression test is most direct means of determining rock strength…

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    8. STRENGTH OF SOILS AND ROCKS

    strength is the most commonly measured strength parameter and this is also true of rock specimens. For the uniaxial or unconfined compressive strength test a right circular cylinder of the material is compressed between the platens of a testing machine as illustrated in Fig. 8.1. The compressive strength is then defined as the maximum load ...

  23. Hot

    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.

  24. Hot

    Estimating Rock Mass Strength - BM 1997 02

    s = constant depending on the characteristics of the rock mass, σc = uniaxial compressive strength of the intact rock material, σ1 = major principal stress at failure, and σ3 = minor principal stress at failure. The uniaxial compressive strength for the rock mass, σc, rockmass, can be expressed by setting σ3 = 0 in Equation 2.1 thus obtaining

  25. Hot

    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.

  26. Hot

    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 Procedure Check the ability of the …

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    Uniaxial compression tests - SP

    This and many other reports on unixial compression tests, conducted at SP, are published on SKB. Examples of standards. ISRM 1979, Suggested methods for determining the uniaxial compressive strength and deformability of rock materials. Int J Rock Mech Min Sci Geomech Abs 16(2), sid 135-140.

  28. Hot

    Laboratory Uniaxial compression test - Rock Mechanics ...

    Sep 28, 2015· Laboratory Uniaxial compression test - Rock Mechanics - Granit - Result: 160MPa. Laboratory Uniaxial compression test - Rock Mechanics - Granit - Result: 160MPa ... MinE 323- Uniaxial Compressive ...

  29. Hot

    Point-load strength: An index for classification of rock ...

    Abstract. Point-load strength (Is) as a measure for the determination of rock strength and for estimating uniaxial (unconfined) compressive strength (UCS) are described and both put together and used for rock strength classification of brittle and hard rocks.

  30. Hot

    Determination of critical saturation degree in rocks based ...

    Aug 13, 2018· Determination of critical saturation degree in rocks based on maximum loss of uniaxial compression strength and deformation modulus ... This matter has been discussed in this paper by conducting uniaxial compressive strength tests on 78 rock samples from 4 different lithologies in two dry and saturated conditions. ... the loss of compressive ...

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