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Applications:
Correlation to unconfined compressive strength of rock / Estimation of weathering grade / Estimation of modulus of elasticity of rock
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Standards
Guidelines
There are many rebound hammer correlation curves freely available for different lithologies to be found in literature on the internet. e.g. Aydin, A. & Basu, Arindam. (2005). The Schmidt Hammer in rock material...
There are many rebound hammer correlation curves freely available for different lithologies to be found in literature on the internet. e.g. Aydin, A. & Basu, Arindam. (2005). The Schmidt Hammer in rock material characterization. Engineering Geology. 81. 1-14. 10.1016/j.enggeo.2005.06.006.
Most of these curves were created with classical R-value hammers and can be used entered directly as a custom material curve in the Original Schmidt Live app.
To use with the RockSchmidt it is necessary to convert to a Q-value curve. Typically the Q-value is R-value + 10.
e.g. Katz et al. (2000)
UCS = 2.21e(0.07R)
Using the R-value curve and the corresponding Q-value it is a simple matter to derive the Q-value curve using the trendline function in spreadsheet software.
UCS = 1.0975e(0.07Q)
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