Compaction quality is directly related to the structure and seepage stability of a rockfill dam. To timely and accurately test the\ncompaction quality of the rockfill material, four real-time test indexes were chosen to characterize the soil compaction degree\nbased on the analysis of roller vibratory acceleration, including acceleration peak value (ap), acceleration root mean square value\n(arms), crest factor value (CF), and compaction meter value (CMV). To determine which of these indexes is the most appropriate,\na two-part field compaction experiment was conducted using a vibratory roller in different filling zones of the dam body. Data on\nrolling parameters, real-time test indexes, and compaction quality indexes were collected to perform statistical regression analyses.\nCombined with the spectrum analysis of the acceleration signal, it was found that the CF index best characterizes the compaction\ndegree of the rockfill material among the four indexes. Furthermore, the quantitative relations between the real-time index and\ncompaction quality index were established to determine the control criterion of CF, which can instruct the site work of\ncompaction quality control in the rockfill rolling process
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