Poissons Ratio Of Granite

6 quartzite 5000 6500 m sec sandstone 1400 4000 m sec shale 1400 3000 m sec.

Poissons ratio of granite. A full bar means this is the highest value in the relevant set. Rubber 0 550. 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. Suryakanta february 13 2015 geotechnical rock 7 comments modulus of elasticity of rock.

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. The red dots show the stress levels where the static elastic properties are reported 7 13 20 and 25 of the failure strength. 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.

1 the value of concrete poisson s ratio is possible to vary based on the type of specimen dry wet or saturated and loading conditions. Download high res image 697kb download. Orthotropic materials have three mutually perpendicular planes of symmetry in their material properties. 1 stress strain curves of untreated sample at 0 10 30 50 and 130 mpa effective stress under dry conditions.

The graph bars on the material properties cards below compare granite to other natural stone materials top and the entire database bottom. 2 comparatively poisson s ratio of concrete under static loads is lower than that of concrete upon which dynamic loads are applied. An example is wood which is most stiff and strong along the grain and less so in the other directions. Granite 3000 5900 m sec basalt 4500 6500 m sec.

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. Young s modulus and poisson s ratio of technical ceramics semiconductor materials glasses concrete and refractories.