The determination of deformation parameters of rock material is an essential part of any design in rock mechanics The goal of this paper is to show that there is a relationship between static and dynamic modulus of elasticity E modulus of rigidity G and bulk modulus K For this purpose different data on igneous sedimentary and metamorphic rocks all of
Elastic properties and Young s modulus for metals and alloys like cast iron carbon steel and more Metals Strength vs Temperature The influence of temperature on the strength of metals Modulus of Rigidity Shear Modulus Modulus of Rigidity is the elasticity coefficient for shearing or torsion force
The elastic modulus of the fractured rock mass Em is changed with the redistribution and development of the fractures An equivalent model of fractured rock mass is structured to represent the
Keywords "rock mechanics Young s modulus; laboratory rock tests; range of elasticity" The elastic behaviour of rocks and the range of their elasticity are of crucial importance in rock engineering In solving problems in mining engineering or tunnelling the change of stress fields forced by an excavation drivage first depends on the elastic
The single crystal elastic constants of C15 NbCr2 have been computed by using a first principles self consistent full potential total energy method From these single crystal elastic constants
Modulus of elasticity of concrete is defined as the ratio of stress applied on the concrete to the respective strain caused The accurate value of modulus of elasticity of concrete can be determined by conducting a laboratory test called compression test on
This article deals with the difference in elasticity moduli of the three and four point bending of spruce and oak wood Theoretical analyses of both loading methods are given The measured characteristics were the MOR and MOE The samples moisture content MC was 0 8 16 fibre saturation point FSP >FSP after being soaked in water We performed the
This paper reports the laboratory measurement of compression and shear waves in Basalt rock Compression or primary waves were produced using a standard ultrasonic pulse velocity tester
Abstract In recent years results of several investigations of the effects of stress environment on physical properties of sandstones limestones and granites have been published Few data however are available on the elastic properties of shale It is the purpose of this paper to describe an experimental technique for measuring the elastic properties of shales under earth like
Basalt fibre has also positive influence on crack resistance and ductility of concrete composites [4 5] However Ayub et al [8] indicated that BF has no influence on the modulous of elasticity
Average values of elastic moduli along the tangential E T and radial E R axes of wood for samples from a few species are given in the following table as ratios with elastic moduli along the longitudinal E L axis Since the modulus of elasticity values are determined from bending the tabulated values given above includes an effect of
jointed rock masses three properties of the rock mass have to be estimated These are ξ uniaxial compressive strength of the intact rock pieces ξ value of the Hoek Brown constant for these intact rock pieces and ξ value of the Geological Strength Index GSI for the rock mass Intact rock properties
of elasticity is within the range of ±8000 MPa as shown in The relationship between modulus of elasticity and σ1/3γ2 B can therefore be virtually expressed by Eq 4 Figure 5 Evaluation of Correction Factor k In the conventional equation for modulus of elastic ity Eq 1 the only difference in the type of coarse
Modulus of elasticity is the measure of the stress strain relationship on the object Modulus of elasticity is the prime feature in the calculation of the deformation response of concrete when stress is applied Elastic constants are those constants which determine the deformation produced by a given stress system acting on the material
The determination of the rock elasticity modulus EM is an indispensable key step for the design of rock engineering problems Traditional experimental analysis can accurately measure the rock EM but it requires manpower and material resources and it is time consuming The EM estimation of new rocks using former published empirical formulas is also a possibility
To calculate the modulus of elasticity E of material follow these steps Measure its initial length L₀ without any stress applied to the material Measure the cross section area Apply a known force F on the cross section area and measure the material s length while this force is being applied This will be Calculate the strain ϵ felt by the material using the
igneous rock popularly known as Deccan Basalt in India covers an area of 500 000 km 2 area in central region Basalt finds its use as building material and ballast; crushed basalt is added to many construction jobs including asphalt paving mixed with concrete and as a rock filtering agent in many drain fields
Understanding the elastic behavior of basalt is important to seismically monitor volcanoes subsea basalts and carbon sequestration in basalt
The effects of fiber length and orientation on elastic properties of Al/basalt MMCs are investigated A comparison between the experimental data and the theoretical data based on physical models is made and the significance of the findings is discussed The results show that as short basalt fiber content was increased from % to 10% by wt
Data used in the present study are taken from an earlier study reported by [] in which an artificial neural network ANN enhanced with the imperialist competitive algorithm ICA was used to associate the input index properties of the granite rock to predict the modulus of elasticity E To achieve the objective of the present study a total of 71 data were collected
modulus of elasticity of basalt rock Trap Rock / Basalt Powder & Fiber from READE The basalts are extrusive naturally mined igneous rock b Basalt is a hard dense dark volcanic rock composed chiefly of Modulus of Elasticity kg/mm3 Read more
et al 2008 making the rock mass deformation Em and elastic Ee moduli sensu ISRM 1975 generally well below the Young s modulus obtained from laboratory testing of the corresponding intact rock specimens Ei Farmer and Kemeny 1992; Wyllie 2003 Accurate prediction of rock mass deformation is crucial in a wide variety of rock
Above X the rock is linear elastic or Hookean like the glass Above X Young s modulus of the rock is nearly constant Although not all rocks have initial changes in bulk modulus and Young s modulus as pronounced as Westerly granite the effect is observed in nearly all rocks to some degree The rapid initial changes in these properties are
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