A SUGGESTION FOR THE COMPARISON METHODS OF AN AMOUNT OF THE PARTICLE BREAKAGE BY THE IN-SITU EXPOSURE AND LABOLATORY SLAKING TESTS OF A SOFT ROCK

Because the test conditions about the laboratory slaking test of a soft rock are decided by a standpoint of the unification and/or the simplicity, it is not clear whether these test conditions in the laboratory reflect the climate condition. Then the laboratory slaking and in-situ exposure tests used to 3 soft rocks are carried out, and 2 test results in another paper are analyzed in this study. The authors suggested two comparison methods of these test results. One is based on the representative value of the grain size distributions. The other is based on the transfer rule about the parameter of a negative binomial distribution. To apply these suggested methods to the test results of 5 soft rocks, the relation between the slaking cycles in the laboratory and the exposure time in climate are cleared.