Particle Breakage of Cement Ellipsoid Aggregate-Part Ⅱ: Investigation of Particle Crushing

摘要

The breakage of particles during triaxial compression tests on cement ellipsoids is systematically analyzed in this paper. The particles after testing are categorized into three types: apparently intact particles, partly damaged particles, and completely broken particles. The fractions of each type of particle were measured. The mass percentages of partly damaged particles and completely broken particles were correlated. Therefore, when considering the crushing characteristics of particles in real coarse aggregates, the mass percentage of completely broken particles can also be used to evaluate the amount of partly damaged particles, which cannot be determined by means of simple sieving analysis. We also found that indices that express the amount of particle breakage for a single grain size are not suitable for characterizing the overall change in particle sizes, but indices that include multiple grain sizes have good coincidence with the observed particle breakage.