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  • Uniaxial Compressive Strength Determination of Rocks

    2021-5-31 · The uniaxial compressive strength (UCS) is an important parameter for rock mass classification and rock engineering designs. This study proposes a novel method for predicting the UCS of rocks using X-ray computed tomography and convolutional neural networks. First, X-ray CT scanning was conducted on five mudstone specimens. The volume data characteristics of

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  • Determination of uniaxial compressive strength of ...

    2013-11-1 · The uniaxial compressive strength (UCS) of intact rock is an important mechanical parameter which is required for many engineering projects. In some engineering projects such as well drilling for petroleum production, due to the depth of the well, there are some limitations for obtaining rock core samples and determining the UCS.

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  • (PDF) Determination of uniaxial compressive strength of ...

    2020-10-11 · Abstract:As a key parameter in the traditional and universal Hoek-Brown(HB)failure criterion,the uniaxial compressive strength of intact rock has a strong correlation with the parameters of rock ...

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  • (PDF) Determination of Uniaxial Compressive Strength of ...

    Determination of Uniaxial Compressive Strength of Granite Rock Samples using Electrical Resistivity Measurement: NDT April 2019 DOI: 10.3997/2214-4609.201900452

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  • Suggested methods for determining the uniaxial

    1979-4-1 · CALCULATIONS (a) The uniaxial compressive strength of the specimen shall be calculated by dividing the maximum load car- ried by the specimen during the test, by the original cross-sectional area. 1. SCOPE 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 ...

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  • Estimating uniaxial compressive strength of rocks using ...

    2013-8-1 · 1. Introduction. The determination of basic mechanical properties of rocks is crucial to a specific engineering project. Several mechanical properties, including uniaxial compressive strength (UCS), have become widely accepted parameters for rock design projects (Baskerville, 1987).From past to present, direct and indirect methods have been used to determine UCS of

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  • Uniaxial Compressive Strength - an overview ...

    The uniaxial compressive strength of a rock under static loading often decreases with an increasing temperature at which the rock has been heat-treated before strength testing. This conclusion is drawn from a great number of experiments [1,2,4,8,9,11,17–19].The higher the temperature is, the lower the strength. Some results for uniaxial compressive strength σ c and

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  • (PDF) Estimating Uniaxial Compressive Strength of ...

    2015-12-24 · The UCS test is a key indicator to determine the compressive strength of rocks (Liang et al., 2015). Likewise, the point load strength test is

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

    2022-1-14 · Determination of c and Φ of rocks from indirect tensile strength and uniaxial compression tests January 2014 International Journal of Geotechnical

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  • STRENGTH PROPERTIES OF ROCKS AND ROCK MASSES

    2006-3-19 · Table 1. Typical values of uniaxial strength (in MPa) for nine common rock types (after Johnson and Degraff, 1988). Rock Tensile Strength (MPa) Compressive Strength (MPa) Limestone Sandstone Sandstone Sandstone Mudstone Limestone Limestone Ironstone Sandstone 18.00 ± 0.62 (20) 19.17 ± 0.21 (23) 23.10 ± 0.48 (19) 24.21 ± 0.83 (8) 35.17 ± 3 ...

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  • (PDF) Determination of uniaxial compressive strength of ...

    2020-10-11 · Abstract:As a key parameter in the traditional and universal Hoek-Brown(HB)failure criterion,the uniaxial compressive strength of intact rock has a strong correlation with the parameters of rock ...

    MORE
  • (PDF) Determination of Uniaxial Compressive Strength of ...

    Determination of Uniaxial Compressive Strength of Granite Rock Samples using Electrical Resistivity Measurement: NDT April 2019 DOI: 10.3997/2214-4609.201900452

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  • Determination of Uniaxial Compressive Strength of Granite ...

    Summary The uniaxial compressive strength (UCS) is one of the most important design parameters in a rock engineering projects and it should be determined as a prerequisite for geotechnical studies. Since direct determination of geomechanical properties of rocks are usually expensive, time consuming and only capable in local geomechanical properties determination,

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

    2022-1-14 · Determination of c and Φ of rocks from indirect tensile strength and uniaxial compression tests January 2014 International Journal of Geotechnical Engineering 8(1):59-65

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  • Suggested methods for determining the uniaxial

    1979-4-1 · CALCULATIONS (a) The uniaxial compressive strength of the specimen shall be calculated by dividing the maximum load car- ried by the specimen during the test, by the original cross-sectional area. 1. SCOPE 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 ...

    MORE
  • (PDF) Estimating Uniaxial Compressive Strength of ...

    2015-12-24 · The UCS test is a key indicator to determine the compressive strength of rocks (Liang et al., 2015). Likewise, the point load strength test is considered to be the best technique of the ...

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  • (PDF) Determination of Rock Strength and Deformability

    The uniaxial compressive strength (UCS) of intact rocks, as estimated from the point load index using conversion factors, together with the Hoek–Brown constant mi, and the Geological Strength ...

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  • Uniaxial Compression Test

    2019-3-9 · Indirect Determination of C 0 Shore hardness (H Shore) is measured as the extent of rebound of a steel bullet dropped from a specific height onto the surface of a rock specimen. The harder the rock, the higher the bounce. An empirical correlation between rock hardness and its uniaxial compressive strength has been obtained based on a

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  • (PDF) Uniaxial Compressive Strength Test | chandryl ...

    Biteghe Chandryl Uniaxial compressive strength test Page 2 fChapter 1 Basics on rock mechanics This introductory chapter define different parameters which characterize a rock. It also presents devices which measure displacements. 1.1 Basic definitions 1.1.1 Strain and Stress Stress The term stress (σ) is used to express the loading in terms of ...

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  • IS 8764 (1998): Method of determination of point load ...

    2018-11-15 · Point load strength now often replaces uniaxial compressive strength in this role, since (when properly conducted) it is as reliable and much quicker to measure. It should be used directly for rock classification. since correlations with uniaxial compressive strength are only approximate. On average, uniaxial compressive strength is 20-25 times ...

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  • (PDF) Estimating Uniaxial Compressive Strength of ...

    2015-12-24 · The UCS test is a key indicator to determine the compressive strength of rocks (Liang et al., 2015). Likewise, the point load strength test is considered to be the best technique of the ...

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  • Uniaxial compressive rock strength determination

    2017-6-30 · 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.

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  • Uniaxial Compression Test

    2019-3-9 · Indirect Determination of C 0 Shore hardness (H Shore) is measured as the extent of rebound of a steel bullet dropped from a specific height onto the surface of a rock specimen. The harder the rock, the higher the bounce. An empirical correlation between rock hardness and its uniaxial compressive strength has been obtained based on a

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  • Method of equivalent core diameter of actual fracture ...

    2021-4-24 · The uniaxial compressive strength (UCS) of rock is one of the most important and necessary parameters for the design of rock engineering (Singh et al. 2012; Jalali et al. 2019).However, the UCS of the rock is not always directly obtainable through the conventional coring method such as drilling in highly weathered or jointed rocks (Broch and Franklin 1972;

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  • Determination of compressive strength of rocks using ...

    2019-5-7 · 1. Central Mining And Fuel Research Institute Regional Centre, Nagpur, Google Scholar; 2. Ergul Yasar & Yasin Erdogan, Correlating sound velocity with the density, compressive strength and Young’s Modulus of Carbonate Rocks International Journal of Rock Mechanics and Mining Science –July (2004). Google Scholar Crossref; 3. P.B. Choudhary and

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  • Determination of Drilling Rate Index Based on Rock ...

    2019-10-28 · The specific rock characteristics that affect penetration rate comprise uniaxial compressive strength (UCS), tensile strength, Young’s modulus, hardness and brittleness. In this study, drilling rate index (DrI) is attempted to predict based on UCS and Brazilian tensile strength (BTS) of rocks. Simple and multiple

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  • Unconfined Compression Test | Geoengineer.org

    In particular, the Uniaxial Compressive Strength is re-calculated as: σ c = σ UCS / (0.88 + 0.222*(D/L) ) Where σ c is the corrected uniaxial compressive strength. Rock characterization and typical range of UCS based on rock types . Based on

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  • Prediction of uniaxial compressive strength and modulus

    Uniaxial Compressive Strength (UCS) and modulus of elasticity (E) are the most important rock parameters required and determined for rock mechanical studies in most civil and mining projects. In this study, two mathematical methods, regression analysis and Artificial Neural Networks (ANNs), were used to predict the uniaxial compressive strength and modulus of

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  • Uniaxial Compression Mechanical Properties of Rock

    2020-6-23 · In the upper soft and lower hard composite strata, it is very difficult to sample the rock and test the mechanical properties of the samples. The study of the mechanical properties of similar material samples by artificial manufacture may enable an alternative method to solve this problem. Therefore, the feasibility of artificial sample preparation and the test of mechanical

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