This study investigates the effects of drying and rewetting on the pore-size distribution in a silty sand. It is shown that drying reduces the void ratio and at the same time alters the pore-size distribution although not with all sizes of pores reducing in volume. As the extent of drying increased the volume fraction of the larger pores increased while the volume fraction of the smaller pores decreased. Subsequent rewetting does not alter or reverse the pore rearrangement in a significant way. Inferred and directly measured soil−water characteristic curves are characterised using fractal theory. Increased drying increases the slopes of scanning curves and reduces air entry and air expulsion suctions. There is no significant change to the fractal dimension of the pore-size distribution. In practice, the drying-induced pore rearrangement could lead to a stability concern, especially for marginally stable soil deposits, as larger pores become greater in number, a change not erased by rewetting, likely making the soil more prone to collapse or liquefaction.

中文翻译：

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由于干燥和再润湿，水力沉积粉砂的孔径演变

本研究调查了干燥和再润湿对粉质砂中孔径分布的影响。结果表明，干燥降低了空隙率，同时改变了孔径分布，尽管并非所有尺寸的孔体积都会减小。随着干燥程度的增加，较大孔的体积分数增加，而较小孔的体积分数减少。随后的再润湿不会以显着的方式改变或逆转孔隙重排。推断和直接测量的土壤-水特征曲线使用分形理论进行表征。增加干燥会增加扫描曲线的斜率并减少空气进入和空气排出的吸力。孔径分布的分形维数没有显着变化。在实践中，