ASTM-D7012 › Historical Revision Information Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and TemperaturesGet price

Abstract This report reviews all potentially available Yucca Mountain Project (YMP) data in the Technical Data Management System and compiles all relevant qualified data including data qualified by this report on elastic properties Poisson's ratio and Young's modulus into a single summary Data Tracking Number (DTN) MO0304DQRIRPPR 002 Get price

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 n NOTE 1—This test method does not include the procedures necessary toGet price

Strength and Modulus of Weathered Rock from SPT Values In the weathered rock it is difficult to drive the split sampler to the full specified depth as in soil Hence we may estimate the strength and elastic modulus values of weathered rock by driving the spt apparatus for a fixed number of blows and find []Get price

ASTMD701204-Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures-1 1 TGet price

1 1 These four test methods cover the determination of the strength of intact rock core specimens in uniaxial and triaxial compression as well as Young's modulus E and Poisson's ratio υ These methods make no provision for pore pressure measurements and Get price

ASTM D7012 - 13 en Standard Test Methods for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures Deze norm is ingetrokken sinds 01-05-2014 as well as Young's modulus E and Poisson's ratio υ Get price

Intelligent Models Applied to Elastic Modulus of Jointed Rock Mass: 10 4018/978-1-5225-2709-1 ch001: Elastic Modulus (Ej) of jointed rock mass is a key parameter for deformation analysis of rock mass This chapter adopts three intelligent models {ExtremeGet price

Standard Test Method for Elastic Moduli of Intact Rock Core Specimens in Uniaxial Compression **ASTM has discontinued this method the industry-accepted standard test method is now ASTM D7012D: ASTM D3148: Young's Modulus Poisson's ratio: Compression testing loading tests modulus of elasticity modulus-Young's rock: DetailsGet price

PDF | The laboratory tests have been used most frequently to determine Modulus of Elasticity of rocks The intact core rock samples representing the region were tested to determine their Young's modulus in the laboratory using three different means Compressometer linear variableGet price

23-10-2017To validate the Young's modulus and Poisson's ratio obtained from the Brazilian test the results were compared with the values from the direct tension tests The results obtained from the Brazilian test were repetitive and within 3 5% of the value obtained from the direct tension test for the rock Get price

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 atGet price

(1) The uniaxial compression test measures the compressive strength the Young's modulus of elasticity and Poisson's ratio of cylindrical test specimens of rock (2) The test is intended for classification and characterisation of intact rock (3)P The following shall be specified in Get price

26-6-2003This report reviews all potentially available Yucca Mountain Project (YMP) data in the Technical Data Management System and compiles all relevant qualified data including data qualified by this report on elastic properties Poisson's ratio and Young's modulus into a Get price

Lab Practical - Rock Support Interaction Part A – Medium Support In this example Intact mi =10 and Disturbance Factor = 0 Check the boxes besides Young Modulus UCS of Rock Mass and Friction Angle of Rock Mass to have them as output under "output" section Get price

The elastic modulus of intact rock is used for many rock engineering projects such as tunnels slopes and foundations but due to the requirements of high-quality core samples and associated sophisticated test equipment instead the use of empirical models to obtain this parameter has been an Get price

For intact rock its low deformability behaviour indicates that it is a stronger material However the condition changes with the presences of joint as discontinuity features in the rocks stress-strain curves and Young's Modulus value has done analyses of the experimental result Get price

ABSTRACT The paper presents the results of laboratory tests performed on a large number of intact sedimentary rock specimens (limestone sandstone siltstone) from Greece The physical properties (porosity dry density) mechanical properties (uniaxial compressive strength) Young's modulus point load index Schmidt Get price

Deformation and strength of rock are known to be functions of confining pressure Method A triaxial compression test is commonly used to simulate the stress conditions under which most underground rock masses exist The elastic constants (Methods B and D) are used to calculate the stress and deformation in rock structures Get price

The jointed rock mass assembled using sand stone element of 25 mm 25 mm 75 mm along different joint angles of 15˚ 30˚ 45˚ 60˚ 75˚ and 90˚ and slope angles of 30˚ 45˚ 60˚ 75˚ and 90˚ with the horizontal All the tests were performed on stable rock mass having continuous joint angle Get price

THE DEFORMATION MODULUS OF ROCK MASSES - comparisons between in situ tests and term modulus of deformation rather than modulus of elasticity or Young's modulus For instance Farmer and Kemeny (1992) found that the deformation modulus on intact rock samples is in the order of 5 to 20 times higher than in situ values The variation Get price

Predicting uniaxial compressive strength modulus of The Schmidt hammer rebound values UCS elasticity modulus P-wave velocity effective porosity water absorption by weight dry and the saturated unit weight of nine different rock types were determined and empirical equations developed Get price

Read The increase in Young׳s modulus of rocks under uniaxial compression International Journal of Rock Mechanics and Mining Sciences on DeepDyve the largest online rental service for scholarly research with thousands of academic publications available at your fingertips Get price

bulk densities and porosity) elastic properties (dynamic and static Young's modulus and Poisson's ratio) and strength properties (unconfined and confined compression and indirect tension) Samples from eight of the drill holes were tested and the results are presented The data exhibit the large _ Get price

based on simple expressions related to the empirical systems mainly the Rock Mass Rating (RMR) the Q index and the Geological Strength Index (GSI) Additionally other expressions can be found which use other index values like the RQD ( Zhang L and Einstein H 2004) and the intact rock modulus - E iGet price

Young's modulus is stress/strain So if the modulus is high it means that the stress value is greater compare to that of the material where the modulus is low or in other words the strain is very less compared to that of the material having low Young's modulus Get price

Correlation between Young's Modulus and Uniaxial Compressive Strength of Aggregates Draft ISRM suggested method for the complete stress-strain curve for intact rock in uniaxial compression International Journal of Rock Mechanics and Mining Sciences 36( 3) pp 279–289 Get price

USING THE POINT LOAD TEST TO DETERMINE THE UNIAXIAL COMPRESSIVE STRENGTH OF COAL MEASURE ROCK John Rusnak Director of Geology Peabody Group St Louis MO Christopher Mark Rock Mechanics Team Leader National Institute for Occupational Safety and Health Pittsburgh PA ABSTRACT Point load testing is used to determine rock strengthGet price

Modulus of deformation or modulus of elasticity is a measure of the resistance of a solid to transmit load This modulus value is very important regarding the transmission of stress via stress waves resulting from shock wave impact For blasting analysis the tangent modulus value of Young's Modulus is the defining property Get price

Because of this limitation something that is commonly done in practice is to base intact modulus values on test results done on good samples of intact rock from locations with competent rock using either laboratory measurements of intact modulus or on an assumed ratio between intact strength and modulus for a particular rock type Get price

basalt rock youngs modulus - educationcare psi/sec ultimate strength total axial strain and Young's modulus 3 6 Typical basalt shear breaks 72 3 73 Engineering classification for intact rock for basalt More details Get Price The effect of confining pressure on Get price

Core sample 38 mm to 150 mm diameter (or intact block suitable to recore) It is recommended that the ratio of the pulse-travel distance to the minimum lateral dimension not exceed 5 The travel distance of the pulse through the rock shall be at least 10 times the average grain size so that an accurate average propagation velocity may be Get price

Keywords: material parameters modulus compressive strength brittle rock 1 Introduction Rock masses in many deep or high stress mines are essentially massive or sufficiently not jointed such that failure process must involve the creation of new fractu res through intact rockGet price

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