3.2.2.1 Drop Weight / Pendulum

Although there are a number of methods of administering an impact the underlying principals are similar, namely that by varying the input energy of the impacting body and the size of the test sample it is possible to build a complex input energy to product size relationship. The results of the test allow the calculation of the t10 value, which is the percentage passing 1/10th of the initial mean size. From the t10 value it is possible to obtain the rock mechanic parameters A (theoretical limiting value of t10) and b (slope of the t10 versus specific comminution energy) which are material related.

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