# What is the modulus of elasticity of rock?

## What is the modulus of elasticity of rock?

Modulus of Elasticity of Some Common Rocks

Types of Rocks Name of Rocks Youngs Modulus of Elasticity (E), kg/cm2*105
Sedimentary Rocks Limestone 1.0 – 8.0
Sandstone 0.5 – 8.6
Shale 0.8 – 3.0
Metamorphic Rocks Gneiss 2.0 – 6.0

## How do you calculate the modulus of elasticity of a rock?

Intact rock elastic modulus The static elastic modulus of an intact rock, Ei, is typically calculated as the slope of the stress–strain curve of a rock deforming under uniaxial compression (Ulusay and Hudson 2007).

## What is modulus ratio of rock?

Modulus ratio reflects the quality of rock, and the quality of rock mass will be less than that of the intact rock. The M rj /M ri should have been less than 1.0 and may be 1/2, 1/3, 1/4 depending upon the quality of rock mass. It was reported that the measured deformations were twice the calculated values.

## What are elastic properties of rock?

Physical Properties of Rocks Elastic properties are described by elastic moduli (Young’s modulus, shear modulus, etc.) and elastic wave velocities (compressional and shear). For isotropic rocks, two parameters describe elastic behaviour; in case of anisotropy, the number of parameters for rock description increases.

## What is the elastic modulus of a rock?

According to, the elastic modulus of granite varies from 2.59 GPa to 88.79 GPa, and in the case of sandstone from 3.4 GPa to 71.7 GPa. In another paper, 48.8 GPa is the identified value of the elastic modulus of stone masonry…. Material Parameters Identification of Historic Lighthouse Based on Operational Modal Analysis

## How is elastic young related to rock strength?

Regression analyses were applied to define relations among these parameters and the range of values of modulus ratio (MR) is estimated for each rock type. Correlation between elastic Young’s modulus E and uniaxial compressive strength σ c for various rock material.

## How is the modulus of deformation related to elasticity?

2.1 Definitions Deformability is characterized by a modulus describing the relationship between the applied load and the resulting strain. The fact that jointed rock masses do not behave elastically has prompted the usage of the term modulus of deformation rather than modulus of elasticity or Young’s modulus.

## How is the bulk modulus related to incompressibility?

Bulk modulus is also termed the modulus of incompressibility. (4) Poisson’s ratio (σ p) is the ratio of lateral strain (perpendicular to an applied stress) to the longitudinal strain (parallel to applied stress). For elastic and isotropic materials, the elastic constants are interrelated. For example, The following are the common units of stress: