Geodurability classification

Geodurability classification chart for intact rock. Note (i) is determined from oven-dried (105°C) to 24-h-saturation condition. (ii) e is plotted as the range and mean of the test results, (ill) strength ratings are according to Bieniawski (1974) (after Olivier, 1979). With kind permission of Elsevier. 

Olivier (1979) proposed the geodurability classification, which is based on the free-swelling coefficient and uniaxial compressive strength (Fig. 3.5). This classification was developed to assess the durability of mudrocks. 

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