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Unconfined Compressive Strength of Rock

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Usmi09

Usmi09

Geotechnical
Joined
May 14, 2015
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how to determine C and θ of rock by UCS by Formula or stress strain curve.
 
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Hi Usmi
I have read a paper written by Hoek & Bray regarding your query, but I could not recover the title.
My understanding there is a curve for each rock, then the c & θ is depending on its overburden pressure.
 
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Thank you for your reply to this thread.
I have came to know to determine C = 0.145*Cu ( cu is UCS value ) but i was unable to get the right reference. and for θ as well.
 
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