Easy Way To Measure Rock Surface Roughness and Joint Roughness Coefficient
To estimate the shear strength of jointed rock mass, it is necessary to estimate the surface roughness as it contributes to the overall strength. It is assumed that a rougher surface will produce greater shear strength. To give a number to the surface roughness, we use Joint Roughness Coefficient (or JRC), which was introduced by Barton.
JRC varies from 0 (polished surface) to 20 (very rough surface), and it is typically estimated using the Barton chart and your judgment. It is possible that your JRC number will slightly differ from the number of your colleague.
If you find this video useful, please share with your mates and like it. You can find more information on how to use the data from this test in my book called 'Rock mechanics through project-based learning'.
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Is joint roughness the same as joint condition in the RMR System?
Hello, teacher.Take the liberty of disturbing you.Where can I buy Barton combs? I work for the protection of stone cultural relics in China. I think this tool can play a role in assessing the current situation of cultural relics. But I didn't find this tool in China.