碾压或夯实的遍数和顺序必须正确，以保证土方密实度符合要求。
Times and sequence of roll or ram compaction must be correct to ensure that earth compaction degree meets the requirement.
对高速液压夯实机（RHIC）的夯实效果进行试验研究，得到夯击次数与每层沉降量及压实度的关系曲线。
According to the experiment data of RHIC, it analyses the relationship between the impacting times, the value of settlement and the degree of compaction.
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