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uniaxial compressive strength of granite

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  • Some Useful Numbers

    The uniaxial compressive strength (UCS) of rock is an important parameter required for design and analysis of rock structures, and rock mass classification.

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  • Thermophysical and Mechanical Properties of Granite and ...

    uniaxial compressive test is preferred: Uniaxial Compressive Strength > 250 MPa 100 - 250 MPa ... Field Estimates of Uniaxial Compressive Strength; Term Uniaxial Compressive Strength (MPa) Point Load ... fresh basalt, chert, diabase, gneiss, granite, quatzite R4 Very Strong 100 - 250 4 - 10 40 - 50 Requires many blows of a geological hammer to ...

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  • DEFORMABILITY PROPERTIES OF ROCKS AND ROCK MASSES …

    Based on an enlarged experimental program of uniaxial compressive tests in different granite lithotypes, it was possible to obtain complete stress-strain diagrams through an appropriate circumferential displacement control, from which the elastic and fracture properties were derived.

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  • Simulation Study on Strength and Failure Characteristics ...

    The results revealed that the geomechanical strengths of fresh rock material deteriorated by approximately 1/3 upon weathering of rock material reduce to slightly weathered rock materials. The results also exhibited that the Brazilan tensile strength for fresh and slightly weathered granites is approximately 1/13 of uniaxial compressive strength.

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  • Compressive Behavior of Granite: Experimental Approach ...

    Chapter 4 Engineering Classification of Rock Materials 631.0400 Engineering properties of rock To use rock in engineering applications, certain prop-erties of the rock must be assessed to reasonably pre-dict performance in the as-built condition. The proper-ties of rock fall into two broad classes: rock material

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  • UNIAXIAL COMPRESSIVE STRENGTH OF MALAYSIAN …

    Estimation of uniaxial compressive strength of rock materials by index tests using regression analysis and fuzzy inference system D.A. Mishra, A. Basu ⁎ Department of Geology & Geophysics, Indian Institute of Technology Kharagpur, Pin-721302, India ... Uniaxial compressive strength Index tests Rock materials (granite, schist and sandstone ...

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  • Uniaxial Compressive Strength - an overview ...

    Predicting the compressive and tensile strength of rocks from indentation hardness index 334 MAY 2012 VOLUME 112 The Journal of The Southern African Institute of Mining and Metallurgy Table II Indentation hardness index (IHI), uniaxial compressive strength (UCS), Brazilian tensile strength …

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  • Influence of strain rate on dilatancy and strength of ...

    In this paper, we have examined the crack formation of weathered granite by monitoring acoustic emissions (AE) under uniaxial compression. Except for the uniaxial compressive strength (UCS), the ...

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

    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 applied to crush the specimen divided by …

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  • Depth Variability of Compressive Strength Test Results of ...

    Dynamic uniaxial compression tests for the Bukit Timah granite in Singapore were conducted at four loading rates (10 0, 10 1, 10 3 and 10 5 MPa/s). It was found that the compressive strength increases from 205 MPa to 235 MPa with loading rate increasing from 10 0 to 10 5 MPa/s. Evidence also indicates that there are small changes in the Young's modulus and the Poisson's ratio of the granite ...

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  • Laboratory Uniaxial compression test - Rock Mechanics - Granit

    Uniaxial compressive strength of Malaysian weathered granite due to cyclic loading @inproceedings{Jobli2017UniaxialCS, title={Uniaxial compressive strength of Malaysian weathered granite due to cyclic loading}, author={Ahmad Fadzil Jobli and Mohd Jamaludin Md Noor and Rudy Tawie and Ahmad Zaidi Hampden and Nadia Natasha Julai}, year={2017} }

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  • [PDF] Uniaxial compressive strength of Malaysian weathered ...

    Jul 30, 2019· Mechanical properties are determined as uniaxial compressive strength of 78.8 (MPa), Poisson’s ratio of 0.24, and elastic modulus of 17.81 (GPa). Both uniaxial compressive strength and elastic modulus of the weathered granite significantly decrease, compared to …

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  • Predicting the compressive and tensile strength of rocks ...

    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.

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  • Chapter 4 Engineering Classification of Rock Materials

    uniaxial compressive strength from the results of the point load test. 4. Test Results and Discussion 4.1 Uniaxial Compressive Strength Test Results The mean values of uniaxial compressive strength of the tested rocks are listed in Table 2. The strength values range from a low of 9.16 MPa for Marl to a high of 101.08 MPa for

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  • 8. STRENGTH OF SOILS AND ROCKS

    Evaluation of mechanical rock properties using a Schmidt Hammer O. Katza,b,c,*, Z. Rechesa, ... uniaxial compressive strength and density. The studied rocks include soft chalk, lime- ... granite. The sources and features of these rocks are listed in Table 1.

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  • Estimating in situ rock mass strength and elastic modulus ...

    2.5. Uniaxial Compressive Strength . The uniaxial compressive strength of the rock was esti-mated from the values of the type L Schmidt Hammer Hardness and the density of the rock. The UCS values were estimated by using the chart named after and Miller (1966) (Figure 2). The chart relates the Schmidt rebound hardness number, rock density ...

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  • Optimization of Blasting Parameters Using Regression ...

    strength reduction in all weathering grades are not so obvious since all specimens show variation of strength reduction from 5 % to 15 %. Then it can be deduce that 50% amplitudes of cyclic loads could reduce uniaxial compressive strength of weathered granite up to 15% average.

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  • Evaluation of mechanical rock properties using a Schmidt ...

    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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  • Mining Rock Mass Rating

    Nov 20, 2008· This paper studies the depth variability of uniaxial compressive laboratory test results on intact Toki granite (i.e., sound rock without macroscopic fractures) from the Shobasama and Mizunami Construction Sites, Japan. Some of the depth variability observed in the laboratory results can be indirectly attributed to the high fracture frequency of the “upper highly fractured rock domain ...

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  • Construction and Building Materials

    The dynamic evolution equations of elastic modulus, Poisson ratio, uniaxial compressive strength, and permeability of granite with temperature are built and run. The results show that the radical stress and tangential stress are greatly different in full coupling model and in other physical field models.

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  • Deformation and failure characteristics of weathered ...

    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 ...

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  • Compressive strength of rocks - PetroWiki

    Uniaxial compression tests have been conducted on Oshima granite under various constant axial strain rates ranging from 10 −8 to 10 −4.The results showed that the strength and the acoustic emission rate increased exponentially with increasing strain rate.

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  • Compressive strength - Wikipedia

    DEFORMABILITY PROPERTIES OF ROCKS AND ROCK MASSES 1. INTRODUCTION 2. DEFORMABILITY OF INTACT ROCK 2.1 Rock under Uniaxial Compression 2.2 Dynamic Elastic Constants 2.3 Hooke's Law ... determining the uniaxial compressive strength and deformability of rock materials, Int. J. Rock

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  • Dynamic failure analysis on granite under uniaxial impact ...

    Uniaxial compressive strength ( c), E-modulus and the factor m i in the Hoek-Brown failure criterion for rock masses Average values from tests Tests of rocks world of intact rock samples -wide* Scandinavian rocks tested at SINTEF / NTNU *** Rating of the factor m i ** c E E c Number of tests c E E c Number

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  • (PDF) Deformation and failure characteristics of weathered ...

    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.

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  • Dynamic uniaxial compression tests on a granite — Monash ...

    Common materials and average ultimate compression and tension strength Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! - the most efficient way to navigate the Engineering ToolBox!

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  • Compression and Tension Strength of some common Materials

    Jul 31, 2008· High strain-rate uniaxial compressive loading tests were produced in the modified split Hopkinson pressure bar (SHPB) with pulse shaper on granite samples. It was shown that the failure of the granite cylinder was typical tensile splitting failuremode by sudden splitting parallel to the direction of uniaxial compressive loading at different strain rates. Besides, it was concluded that not only ...

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  • Correlation between Uniaxial Compressive Strength and ...

    Building stones, particularly sandstone and granite, are very important in the building elements of Por-tugal’s historical and cultural heritage. Experimental research, based on uniaxial compressive tests, was carried out on selected representative samples of lithotypes of …

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  • Impact of weathering on rock material strengths of granite

    Granite 24 GPa Shale 1.6 GPa Limestone 24 GPa Chalk 3.2 GPa Sandstone 0.4 GPa Steel 80 GPa Wood 4 GPa Glass 19 GPa Lithostatic pressure gradient 26.46 MPa/km (for = 2.70) Hydrostatic pressure gradient 9.8 MPa/km Unconfined compressive strength Granite 100-250 MPa Basalt 100-300 MPa Quartzite 150-300 MPa Sandstone 20-170 MPa

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  • Estimation of uniaxial compressive strength of rock ...

    The compressive strength of granite (depth = 1377–2002 m) taken from GPK-1 (see Fig. 1 for location) was found to range between 120 and 485 MPa at a confining pressure of 40 MPa (Rummel 1992), and uniaxial compressive strength (UCS) values between 100 and 130 MPa are reported for unaltered granite from Soultz-sous-Forêts in an unpublished ...

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