The results show that best permanent deformation resistance can be got when continuous dense gradation, which has even arrangement of coarse and fine aggregate is adopted.
结果表明，采用粗细集料搭配均匀的连续密级配和适中的沥青用量可以获得最佳的抗永久变形能力。
Gradation of sand column and sediment concentration of muddy water and water head are remarkably effective factors for the fine grain distribution in sand column.
砂柱的颗粒组成、水含沙量和入渗水头对滞留分布产生显著的影响。
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