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http://dx.doi.org/10.7474/TUS.2020.30.6.551

Calculation Method for Nominal Area of Rock Core Specimen During Direct Shear Test  

Kang, Hoon (Korea Research Institute of Standards and Science)
Park, Jung-Wook (Korea Institute of Geoscience and Mineral Resources)
Park, Chan (Korea Institute of Geoscience and Mineral Resources)
Oh, Tae-Min (Pusan National University)
Cho, Jung-Woo (Korea Institute of Industrial Technology)
Publication Information
Tunnel and Underground Space / v.30, no.6, 2020 , pp. 551-558 More about this Journal
Abstract
This note presents the calculation of nominal area for rock core specimen under direct shear testing condition. The initial nominal area was assumed as ellipsoid, and the equations for calculating the nominal area are derived. The normalized shear displacement and normalized nominal area have an identical relationship regardless of the ellipsoid shape. New testing constants and the generalized method were suggested to calculate the decrease of the nominal area. The method was applied to calculate the direct shear testing data and the changes of result were discussed.
Keywords
Rock core specimen; joint; direct shear test; nominal area; nominal stress;
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  • Reference
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