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  • WHAT ARE THE VALUES OF MODULUS OF ELASTICITY

    2015-2-13  Modulus of Elasticity of Rock Modulus of elasticity of rocks depend upon several factors, such as, Type of rock Porosity Grain size Water content Value of modulus of elasticity can be determined by static or dynamic methods. Higher value of modulus of elasticity indicates good quality rock having sound composition. Typical values of modulus of []

  • Elastic properties of rock salt in the Santos Basin ...

    Most subsurface rock models consider salt bodies as homogenous masses and set to evaporite minerals constant values of elastic properties such as density, compressional and shear velocities, Young ...

  • Elastic properties of rock salt in the Santos Basin ...

    Due to the unavailability of core samples of rock salt for this study, we apply the log-calibrated v p-v s and v p-E equations to Justen's data (Justen, 2014) of Taquari-Vassouras salt mine, Brazil, to inspect the accuracy of the estimations of the shear velocity and Young's modulus from compressional velocity through laboratory measurements.

  • Effect of Impurity Content on Elastic Modulus and

    The basic features of salt rock in China are as follows: thickness single layer, more layered distribution and impurities and others. The unstable mechanical parameters are caused by the different types and content of minerals in natural salt rock. Elastic modulus and Poisson ratio of natural samples from certain northern area in China which are compressed under different confining pressure is ...

  • Mechanical behavior of salt rock under uniaxial ...

    To investigate how the microstructure evolution of salt rock due to creep test affects the stress-strain behavior, the crept samples were again tested at a constant displacement rate. The test results showed that the axial peak stress, axial peak strain, and modulus of elasticity

  • Standard Test Method for Elastic Moduli of Intact

    Withdrawn Rationale: This test method covers the determination of elastic moduli of intact rock core specimens in uniaxial compression. It specifies the apparatus, instrumentation, and procedures for determining the stress-axial strain and the stress-lateral strain curves, as well as Young's modulus, E, and Poisson's ratio, . Formerly under the jurisdiction of Committee D18 on Soil and Rock ...

  • THE DEFORMATION MODULUS OF ROCK MASSES -

    2011-3-11  Modulus of elasticity of a rock mass ( Eem ): The ratio of stress (p) to corresponding strain during loading of a rock mass, including only the elastic behaviour (we), see Figure 1. 4 3 2 1 0 5 0.5 1 1. 52 2. MEASURED DEFORMATION (cm) A PP L I E D S T R E S S (M P a) w w e d p

  • ELASTIC PROPERTIES AND POROSITY

    2001-1-30  4 0 10 20 30 40 50 60 0 0.2 0.4 0.6 0.8 1 Bulk Modulus (GPa) Porosity SOLID GLASS Frame-Supported Foam Disintegrated Foam Honeycomb Structure A critical porosity value exists which is typical for a given class of porous materials. Each class is defined on the basis of common mineralogy and/or diagenetic porosity reduction

  • Lectures on Rock MechanicsLectures on Rock Mechanics

    2010-8-11  • What is the modulus of elasticity of rock and how to get it? • What are the effects of rock defects (jointing beddingWhat are the effects of rock defects (jointing bedding planes, schistocity, fissures, cavities and other discontinuities) on its strength?

  • PHYSICAL PROPERTIES OF SALT ANHYDRITE, AND

    2010-11-2  salt beds, and the heats required to raise the temperature of each to 1,500°C and to 2>000°C were calculated. For a half and half mixture of salt and anhydrite, 1,300 cal/gm were required to raise the tempera­ ture to 2,000°C. For an evaporite containing 60 percent salt and

  • Determining Situ Deformation Modulus Using a Flexible ...

    2016-7-19  Determining Rock Quality Designation (RQD) of Rock Core. 2.3 ISRM Suggested Methods.- Suggested Methods for Deformability Determination Using a Flexible Dilatometer, International Society for Rock Mechanics Commission on Testing Methods, Int. J. Rock. Mech. Min. Sci. and Geomech. Abstr., Vol 24, No. 2, pp 123-134, 1987. 2.4 Other Publications.-

  • Calculation of modulus of elasticity between two

    The modulus of elasticity between the perovskite and rock salt blocks (the unit cell of YBa2Cu3O7-?? is composed of them) in Y-system superconductors (YBa2Cu3O7-??, ?? = 0.07-0.62) have been calculated. A clear correlation among the superconducting transition temperature and the modulus of elasticity between the perovskite and rock salt blocks ...

  • Numerical Simulation on Open Wellbore Shrinkage

    位置: 8600 Rockville Pike, Bethesda, MD
  • EXPERIMENTAL INVESTIGATION ON EFFECT OF ...

    The uniaxial compression tests on marbles were performed under six levels of strain rates ranging from 2×10-5 to 5×10-3 s-1 by using RMT–150B servo machine.The effects of strain rate on stress rate,peak strength,elasticity modulus,Poisson?s ratio,softening ...

  • Differences between static and dynamic elastic moduli

    1 Introduction. Elastic constants are relevant parameters whenever stresses and strains are considered. The two main methods used to measure them are: (a) the static method, which is based on the measurement of the deformation induced in a material by the application of a known force, and (b) the dynamic method, which implies measuring the ultrasonic body wave velocities.

  • THE DEFORMATION MODULUS OF ROCK MASSES -

    2011-3-11  Modulus of elasticity of a rock mass ( Eem ): The ratio of stress (p) to corresponding strain during loading of a rock mass, including only the elastic behaviour (we), see Figure 1. 4 3 2 1 0 5 0.5 1 1. 52 2. MEASURED DEFORMATION (cm) A PP L I E D S T R E S S (M P a) w w e d p

  • Estimating rock mass elastic modulus from seismic ...

    2017-4-25  estimate rock mass modulus from empirical relations, often non-linear, developed by comparing -situ test in measurements with rock mass classification schemes, e.g. RMR, GSI, and Q (Hoek and Diederichs, 2006).For massive rock (i.e. rock masses containing few joints), Palmström and Singh (2001) proposed the simplified

  • Use of Seismic Resonance Measurements to Determine

    2018-7-23  the Young’s modulus obtained from laboratory testing of the corresponding intact rock specimens (Ei) (e.g., Farmer and Kemeny 1992; Wyllie 2003). Accurate prediction of rock mass deformation is crucial in a wide variety of rock engineering applications (e.g., tunnel support, foundations), highlighting the relevance of modulus measurements at

  • Physical properties and weathering characteristics of slate

    2012-7-31  si?gh er] WeatheringCharacteristicsofSlate 379 3.CLASSIFICATION Slateisbroadlyclassifiedundertheheadingsofmica,clay,and igneousslates ...

  • PHYSICAL PROPERTIES OF SALT ANHYDRITE, AND

    2010-11-2  salt beds, and the heats required to raise the temperature of each to 1,500°C and to 2>000°C were calculated. For a half and half mixture of salt and anhydrite, 1,300 cal/gm were required to raise the tempera­ ture to 2,000°C. For an evaporite containing 60 percent salt and

  • Use of Seismic Resonance Measurements to Determine

    2018-7-23  the Young’s modulus obtained from laboratory testing of the corresponding intact rock specimens (Ei) (e.g., Farmer and Kemeny 1992; Wyllie 2003). Accurate prediction of rock mass deformation is crucial in a wide variety of rock engineering applications (e.g., tunnel support, foundations), highlighting the relevance of modulus measurements at

  • Experimental salt weathering of limestones in relation

    A total of 21 different types of British and European Mesozoic limestones have been subjected to simulated salt weathering using sodium sulphate (Na 2 SO 4) with the following aims: assessment of the relative durabilities of different types of limestone; assessment of the importance of modulus of elasticity and other factors in affecting ...

  • Search results for: modulus of elasticity (MOE)

    Furthermore, the highest bulk modulus values in the zinc blende (B3), rock salt (B1), tungsten carbide (WC), and the nickel arsenide (B8) structures (294GPa, 401GPa, 415GPa and 447 GPa, respectively) indicates that ReC is a hard material, and is superhard compound H(B8)= 36 GPa compared with the H(diamond)=96 GPa and H(c BN)=63.10 GPa.

  • elastic modulus of basalt oct - RISTORANTE LA

    elastic modulus of basalt stone . elasticity of basalt nt-groupeu. basalt bulk modulus gartenbau-leonhardtde basalt rock bulk modulus The Gulin product line, consisting whate is the modulus of elasticity for basalt stone Chat online Basalt Modulus Of Elasticity . get price

  • THE DEFORMATION MODULUS OF ROCK MASSES -

    2011-3-11  Modulus of elasticity of a rock mass ( Eem ): The ratio of stress (p) to corresponding strain during loading of a rock mass, including only the elastic behaviour (we), see Figure 1. 4 3 2 1 0 5 0.5 1 1. 52 2. MEASURED DEFORMATION (cm) A PP L I E D S T R E S S (M P a) w w e d p

  • fin32020 ch02.qxd 8/10/01 5:38 PM Page 13 CHAPTER 2 ...

    2014-1-30  The bulk modulus is analogous to the modu-lus of elasticity for solids; however, for fluids it is defined on a volume basis rather than in terms of the familiar one-dimensional stress–strain relation for solid bodies. In most engineering problems, the bulk modulus at or near atmospheric pressure is the one of interest. The bulk modulus is a ...

  • Physical properties and weathering characteristics of slate

    2012-7-31  si?gh er] WeatheringCharacteristicsofSlate 379 3.CLASSIFICATION Slateisbroadlyclassifiedundertheheadingsofmica,clay,and igneousslates ...

  • Estimation of rock modulus For intact rocks with an artificial ...

    2015-3-10  The modulus ratio and elastic modulus of intact rock obtained from Hoek et al.’s equation for various sci values are very high for almost every type of rock when GSI ? 100 (Fig. 9). This limitation may be observed for almost all empirical approaches which do not consider the elastic modulus of intact rock as an input parameter.

  • What is the relation between Poisson’s ratio and the ...

    Poisson's ratio is the ratio of transverse contraction strain to longitudinal extension strain in the direction of stretching force. Tensile deformation is considered positive and compressive deformation is considered negative. The definition of P...

  • ENGR 2300 Chapter 12 Flashcards Quizlet

    Calculate the density (in g/cm^3) of an AX compound given that it has the rock salt crystal structure and that the radii of the A and X ions are 0.137 and 0.241 nm, respectively. Assume atomic weights of 22.7 and 91.4 g/mol for the A and X elements, respectively.

  • Numerical Simulation on Open Wellbore Shrinkage

    Most salt rock has interbed of mudstone in China. Owing to the enormous difference of mechanical properties between the mudstone interbed and salt rock, the stress-strain and creep behaviors of salt rock are significantly influenced by neighboring mudstone interbed. In order to identify the rules of wellbore shrinkage and casings equivalent stress in bedded salt rock stratum, three-dimensional ...

  • elastic modulus of basalt oct - RISTORANTE LA

    elastic modulus of basalt stone . elasticity of basalt nt-groupeu. basalt bulk modulus gartenbau-leonhardtde basalt rock bulk modulus The Gulin product line, consisting whate is the modulus of elasticity for basalt stone Chat online Basalt Modulus Of Elasticity . get price

  • fin32020 ch02.qxd 8/10/01 5:38 PM Page 13 CHAPTER 2 ...

    2014-1-30  The bulk modulus is analogous to the modu-lus of elasticity for solids; however, for fluids it is defined on a volume basis rather than in terms of the familiar one-dimensional stress–strain relation for solid bodies. In most engineering problems, the bulk modulus at or near atmospheric pressure is the one of interest. The bulk modulus is a ...

  • Error‐controlled implicit time integration of

    The Minkley model, commonly used for rock salt in situations where the dilatancy limit is exceeded in areas of practically relevant dimensions, is based on a visco‐elasto‐plastic rheological model as shown in Figure 2.The structure is similar to the Lubby2 model but extended by a plastic element allowing rate‐independent non‐associated plastic flow.

  • Rock - Stress-strain relationships Britannica

    Rock - Rock - Stress-strain relationships: The deformation of materials is characterized by stress-strain relations. For elastic-behaviour materials, the strain is proportional to the load (i.e., the applied stress). The strain is immediate with stress and is reversible (recoverable) up to the yield point stress, beyond which permanent strain results.

  • ENGR 2300 Chapter 12 Flashcards Quizlet

    Calculate the density (in g/cm^3) of an AX compound given that it has the rock salt crystal structure and that the radii of the A and X ions are 0.137 and 0.241 nm, respectively. Assume atomic weights of 22.7 and 91.4 g/mol for the A and X elements, respectively.

  • The Structure and Mechanical Behavior of Ice

    The elastic behavior of ice is characterized by moderate anisotropy. At temperatures near the melting point, Young's modulus 23 of single crystals varies by less than 30%, from 12 GPa along the least compliant direction (parallel to the c-axis) to 8.6 GPa along the most compliant direction (inclined to both the c- and a-axes). Along directions within the basal plane Young's modulus is 10 GPa.

  • Crain's Petrophysical Handbook Elastic Constants -

    Ydyn = dynamic Young's Modulus of rock (GPa) NOTE: Be sure to convert metric DTC and DENS values to Engliah units. Results are in GPa. Divide by 6.894 to get psi * 10^6. Brittleness Coefficient A brittleness coefficient was proposed by Mullen in 2007, as shown below: 1 ...

  • Some Useful Numbers - Jackson School of Geosciences

    2014-12-28  Very strong rock Very hard rock, requires repeated hammer blows >100 MPa Strong rock Hand specimen can be broken with single blow 50-100 MPa Mod. strong rock 5 mm indentations with hammer pick end 12.5-50 MPa Mod. weak rock Too hard to cut by hand 5-12.5 MPa Weak rock Crumbles with blows of pick end of hammer 1.25-5 MPa

  • STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES 1 ...

    2006-3-19  In general, compared to intact rock, a rock mass has reduced tensile strength (almost zero), and reduced shear strength especi ally along discontinuity planes. Furthermore, if a rock mass is cut by directional joint sets , the rock mass strength is anisotropic. Rock mass strength is scale dependent and varies with the volume of rock under ...