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Investigating water retention characteristics upon wetting paths using water-undrained compression tests

机译：使用水 - 不介的压缩试验研究润湿途径时的水保留特性

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Degree of saturation can be increased by either increasing gravimetric water content or decreasing void ratio. There is little experimental evidence showing whether these two mechanisms are equivalent. In this paper two 'wetting' processes are compared. Degree of saturation was increased by adding water (hydraulic path) and by compressing the soil at constant gravimetric water content (mechanical path). Water retention data were then interpreted accounting for the effect of void ratio on degree of saturation-suction relationship. Experimental results show that an irreversible increase in degree of saturation produced by a compression at constant gravimetric water content is equivalent to an irreversible increase in degree of saturation produced by an increase in gravimetric water content. In other words the 'main wetting' surface is path-independent. This also implies that the term 'main wetting' should be generally associated with an increase in degree of saturation and not just gravimetric watercontent.
机译：通过增加重量含水量或降低空隙率可以增加饱和度。几乎没有实验证据表明这两个机制是否等同。在本文中，比较了两个“润湿”过程。通过加入水（液压路径）并通过在恒定的重量含水量（机械路径）下压缩土壤来增加饱和度。然后解释水保留数据核算空隙率对饱和 - 抽吸关系程度的影响。实验结果表明，恒定重量含水量压缩产生的饱和度不可逆转的增加等同于通过增加重量含水量产生的饱和度不可逆转的增加。换句话说，“主润湿”表面是无关的。这也意味着术语“主要润湿”通常应与饱和程度的增加，而不仅仅是重量的水道。

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