Poissons Ratio Of Granite

A full bar means this is the highest value in the relevant set.

Poissons ratio of granite.

What are the values of modulus of elasticity poisson s ratio for different rocks. Poisson s ratio sandy soil 0 25 0 4 gravel soil 0 15 0 35 granite 0 1 0 3 sandstone 0 21 0 38 shale 0 2 0 4 limestone 0 18 0 33 chalk 0 35 marble 0 06 0 22. Rubber 0 550. Suryakanta february 13 2015 geotechnical rock 7 comments modulus of elasticity of rock.

6 quartzite 5000 6500 m sec sandstone 1400 4000 m sec shale 1400 3000 m sec. An example is wood which is most stiff and strong along the grain and less so in the other directions. What is poisson s ratio of concrete. Orthotropic materials have three mutually perpendicular planes of symmetry in their material properties.

Download high res image 697kb download. Download full size image fig. Then hooke s law can be expressed in matrix form as where is the young s modulus along axis is the shear modulus in direction on the plane whose normal. 2 comparatively poisson s ratio of concrete under static loads is lower than that of concrete upon which dynamic loads are applied.

Granite is a type of common industrial natural stone. 1 stress strain curves of untreated sample at 0 10 30 50 and 130 mpa effective stress under dry conditions. Although the values of poisson s ratio for many materials are close to the initial recommendation of 1 4 by poisson or 1 3 by wertheim it is a well known fact today that its theoretical value for an isotropic material is between 1 and 1 2. The red dots show the stress levels where the static elastic properties are reported 7 13 20 and 25 of the failure strength.

When a sample of material is stretched in one direction it tends to get thinner in the lateral direction and if a sample is compressed in one direction it tends to get thicker in the lateral direction. Young s modulus and poisson s ratio of technical ceramics semiconductor materials glasses concrete and refractories.