WHAT ARE THE VALUES OF MODULUS OF ELASTICITY & POISSON’S RATIO FOR DIFFERENT ROCKS?

modulus of elasticity of rock

The modulus of elasticity of rocks depends on many factors, such as,

  • rock type
  • porosity
  • grain size
  • amount of water

The value of modulus of elasticity can be determined by static or dynamic methods. Higher value of modulus of elasticity indicates good quality rock with sound structure. Typical values ​​of modulus of elasticity of some normal are given in the table below.

modulus of elasticity of some common rocks

types of rocks name of rocks Young’s modulus of elasticity (E), kg/cm2*105
igneous rocks bajalat 2.0 – 10.0
quarry 3.0 – 9.0
black Stone 6.0 – 11.0
granite 2.6 – 7.0
cymite 6.0 – 8.0
sedimentary rocks dolomite 2.0 – 4.4
Limestone 1.0 – 8.0
sandstone 0.5 – 8.6
shale 0.8 – 3.0
metamorphic rocks shell 2.0 – 6.0
marble 6.0 – 9.0
quartzite 2.6 – 10.2
shale 4.1 – 7.2

Poisson’s ratio of rocks

Poisson’s ratio linearly measures the ratio of the axial strain to the lateral stress in the elastic field. For most rocks, the Poisson’s ratio ranges from 0.15 to 0.40. Typical values ​​of modulus of elasticity of some normal are given in the table below.

Poisson’s ratio value for some common rocks

types of rocks name of rocks Average value of Poisson’s ratio (,

igneous rocks

bajalat 0.14 – 0.20
quarry 0.125 – 0.25
black Stone 0.125 – 0.25
granite 0.125 – 0.25
cymite 0.25
sedimentary rocks dolomite 0.08 – 0.20
Limestone 0.10 – 0.20
sandstone 0.066 – 0.125
shale 0.11 – 0.54
metamorphic rocks shell 0.091 – 0.25
marble 0.25 – 0.38
quartzite 0.23
shale 0.01 – 0.20

Er. Mukesh Kumar

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Er. Mukesh Kumar is Editor in Chief and Co-Funder at ProCivilEngineer.com Civil Engineering Website. Mukesh Kumar is a Bachelor in Civil Engineering From MIT. He has work experience in Highway Construction, Bridge Construction, Railway Steel Girder work, Under box culvert construction, Retaining wall construction. He was a lecturer in a Engineering college for more than 6 years.