ultimate compressive strength of rock

ultimate compressive strength of rock

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  • Ultimate tensile strength - Wikipedia

    Ultimate tensile strength (UTS), often shortened to tensile strength (TS), ultimate strength, or Ftu within equations, is the capacity of a material or structure to withstand loads tending to elongate, as opposed to compressive strength, which withstands loads tending to reduce size...

  • Pile end bearing capacity on rock - Foundation engineering ,

    Oct 09, 2007· "The ultimate bearing capacity of a rock mass with open or clay filled joints is no more than the unconfined compression strength of the intact rock Where the joints are widely spaced,the ultimate end-bearing resistance may be calculated from the equation qub=2*Nphi*quc Nphi is tan squared of 45 + phi/2...

  • ASTM D7012-14e1 - Techstreet

    ASTM D7012-14e1 Standard Test Methods for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures , These test methods do not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength , D2938 Unconfined Compressive Strength of Intact Rock Core ....

  • Rock failure relationships - petrowikiorg

    Within this framework, we can define several important properties of the rock as shown in Fig 2: C 0 = Uniaxial or unconfined compressive strength (σ 3 = 0) C u = Cohesive strength or the intercept of the envelope with σ n = 0 C t = Tensional strength...

  • Empirical relations between rock strength and physical ,

    Empirical relations between rock strength and physical , In this study, 31 empirical equations are summarized that relate unconfined compressive strength and internal friction angle of sedimentary rocks (sandstone, shale, and limestone and dolomite) to physical properties (such as velocity, modulus, and porosity) , rock strength to ....

  • How does Compressive Strength relate to Bearing Capacity ,

    The "unconfined" compressive strength is equal to 2 times the undrained shear strength For all intents and purposes the ultimate bearing capacity is 6 times the undrained shear strength (where c in cNc is the undrained shear strength) or 3 times the unconfined compressive strength...

  • ASTM D7012 - 07 Standard Test Method for Compressive ,

    D7012 - 07 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....

  • HOW TO CLASSIFY ROCKS? (ENGINEERING CLASSIFICATION OF ,

    Step-2 (Classifying the rock based on Modulus Ratio) From the stress-strain curve obtained from uniaxial compressive strength test, draw a tangent at 50% ultimate compressive strength of rock & calculate the tangent modulus at this point...

  • "Tensile strength and failure criterion of analog ,

    The Brazilian tests were successful in determining the splitting tensile strength and the effect of porosity on the ultimate tensile strength of the Hydro-Stone TB specimens Results showed that the tensile strength of the specimens was approximately 10 percent of the compressive strength...

  • Estimating thestrength ofrock materials - SAIMM

    ingtheuniaxial compressive strength of rock for practical engineering purpos 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 ....

  • Empirical relations between rock strength and physical ,

    Empirical relations between rock strength and physical , In this study, 31 empirical equations are summarized that relate unconfined compressive strength and internal friction angle of sedimentary rocks (sandstone, shale, and limestone and dolomite) to physical properties (such as velocity, modulus, and porosity) , rock strength to ....

  • Compressive strength of basalt rock - Mine Equipments

    Unconfined Compressive Strength of Weathered Ocala Limestone , When rock masses are weathered it is often difficult to obtain core segments that , compressive strength and Young's modulus for andesities, basalts and tuffs Block rock...

  • (PDF) A Review of the Tensile Strength of Rock: Concepts ,

    A Review of the Tensile Strength of Rock: Concepts and Testing , where tensile values could be reliably correlated with unconfined compressive strength or CI valu , the tensile strength of ....

  • Prediction of Ultimate Capacity of Axially Loaded Drilled ,

    compressive strength and unit side shear resistance 22 End bearing resistance of drilled shaft using unconfined compressive strength From the mid 1970 ss, research was actively undertaken to define the ultimate bearing capacity of drilled shafts via unconfined compressive strength of rock But the unconfined compressive strength...

  • Prediction of Side Resistance in Poor Quality Rock: RQD vs ,

    wireline rock coring techniqu The strength of intact rock specimens were evaluated in the laboratory unconfined compression (ASTM D7012) and point load testing (ASTM D5731) On 27 specimens, the elastic modulus of the intact rock core, E i, and the unconfined compressive strength of the intact rock, q ui, was established by performing ....

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

    52 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...

  • Compressive strength - Wikipedia

    Compressive strength or compression strength is the capacity of a material or structure to withstand loads tending to reduce size, as opposed to tensile strength, which withstands loads tending to elongate...

  • How does Compressive Strength relate to Bearing Capacity ,

    The "unconfined" compressive strength is equal to 2 times the undrained shear strength For all intents and purposes the ultimate bearing capacity is 6 times the undrained shear strength (where c in cNc is the undrained shear strength) or 3 times the unconfined compressive strength...

  • "Tensile strength and failure criterion of analog ,

    The Brazilian tests were successful in determining the splitting tensile strength and the effect of porosity on the ultimate tensile strength of the Hydro-Stone TB specimens Results showed that the tensile strength of the specimens was approximately 10 percent of the compressive strength...

  • What is Compressive Strength? - Definition from Corrosionpedia

    Compressive strength is measured on materials, components and structur By definition, the ultimate compressive strength of a material is that value of uniaxial compressive stress reached when the material fails completely Measurements of compressive strength are affected by the specific test methods and conditions of measurement...

  • Compressive Strength Of Different Rocks - comveluwenl

    Compressive Strength of rock: The RMR value depends up on the unconfined compressive strength (q u ) of the rock and it can be determined from laboratory compression test on a prepared rock specimen Or otherwise find out the approximate value of compression strength from point load test on intact pieces of drill core...

  • Modified Johnston Failure Criterion from Rock Mechanics to ,

    The failure criteria from rock mechanics, Hoek-Brown and Johnston failure criteria, may be extended and modified to assess the ultimate compressive strength of axially loaded circular fiber reinforced polymer (FRP)-confined concrete columns In...

  • rock compressive strength - royalcrescentgroupin

    Uniaxial compressive strength is the ultimate compressive stress of the rock specimen failure under uniaxial compression conditions Unconfined compressive strength means that the strength of a rock or soil sample when crushed in one direction in a triaxial test without any lateral restraint...

  • Prediction of Ultimate Capacity of Axially Loaded Drilled ,

    compressive strength and unit side shear resistance 22 End bearing resistance of drilled shaft using unconfined compressive strength From the mid 1970 ss, research was actively undertaken to define the ultimate bearing capacity of drilled shafts via unconfined compressive strength of rock But the unconfined compressive strength...

  • ASTM-D7012 | Standard Test Methods for Compressive ,

    11 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...

  • Empirical relations between rock strength and physical ,

    Empirical relations between rock strength and physical , In this study, 31 empirical equations are summarized that relate unconfined compressive strength and internal friction angle of sedimentary rocks (sandstone, shale, and limestone and dolomite) to physical properties (such as velocity, modulus, and porosity) , rock strength to ....

  • Ultimate Strength Research Papers - Academiaedu

    A relationship was suggested to predict the ultimate strength of very high-strength concrete under triaxial compression Furthermore, strength criteria essentially developed to estimate the ultimate strength of intact rock were applied to the concrete...

  • Strength of Laterite Rock Concrete - sciepub

    The average ratio of the flexural strength to the compressive strength gave 014 A comparison of the ratio of the flexural strength to compressive strength of laterite rock concrete obtained by Raju and Ramakrishna strength of concrete was 02 for the former and 01 for the later These values are similar to what obtained from crushed stones ....

  • Modified Johnston Failure Criterion from Rock Mechanics to ,

    The failure criteria from rock mechanics, Hoek-Brown and Johnston failure criteria, may be extended and modified to assess the ultimate compressive strength of axially loaded circular fiber reinforced polymer (FRP)-confined concrete columns In...

  • Ultimate Strength Research Papers - Academiaedu

    A relationship was suggested to predict the ultimate strength of very high-strength concrete under triaxial compression Furthermore, strength criteria essentially developed to estimate the ultimate strength of intact rock were applied to the concrete...