| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for measuring the compressive strength of a granular material, capable of measuring the relative breaking load of primary particles with good reproducibility even in the case that a sample of the granular material consists of a cohesive dry powder of 100μm or less. SOLUTION: In a sample container, the sample of the granular material is wetted with liquid to be dispersed. Subsequently, the wet primary particles are selected by an optical observation means, and the primary particles in the container are pushed against an upper indenter at the inspection position to measure their breaking load.
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