GeologyRocksrock mechanical properties
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al8301
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There is unconfined
Sat, 03/22/2008 - 12:56There is unconfined compressive strength (UCS). Where a cylinder of rock is placed in a vice and squeezed until it breaks, obviously a little more complex in reality but that's the gist of it.
Point load tests where a metal point is forced by a jack into a core of rock the pressure is measured at the point the rock fractures.
They're probably the main two for strength, but given that the strength of rock units is generally goverened by the weakest point (faults, fractures, bedding planes) more effort goes into understanding these discontinuities than the rock mass as a whole.
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rock mechanical properties
Submitted by danhowitt on Thu, 03/20/2008 - 04:52.Regarding petrophysics - it is common to use acoustic and density measurements of rocks to ascertain their mechanical properties and strength.
The compressional wave velocity of sound through the rock, and the shear wave velocity, and this with the density of the rock to compute.
I'm interested in learning about other scientific ways to determine the mechanical properties and strength of rocks.