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首页> 外文会议>GEO-DENVER 2007 >Experimental study of the water retention curve as a function of void ratio
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Experimental study of the water retention curve as a function of void ratio

机译：保水曲线随空隙率变化的实验研究

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This article presents an experimental study of the water retention curve involving the measurement of void ratio on a drying path. Tests were conducted to determine the variations of water content w and void ratio e induced by variations of the suction s. This study concerns the whole hydric domain of the soil from saturation to dry state. To determine the water retention curve, we used a pressure cell for low suctions and a vapor equilibrium technique (salt solutions) for high suctions. This water retention curve is based on the constitutive relation between water content and suction, for a given void ratio. From saturation, this curve was investigated for different initial states due to different conditions of soil compaction. The results lead to the plotting of a characteristic surface w=w(s,e) which expresses water content as a function of suction and void ratio. It can be considered as a generalization of the classical retention curve. Moreover, this curve can be represented using the degree of saturation as function of suction and void ratio.
机译：本文介绍了保水曲线的实验研究，其中涉及测量干燥路径上的空隙率。进行测试以确定吸力s的变化引起的水含量w和空隙率e的变化。这项研究涉及从饱和状态到干燥状态的整个土壤水力域。为了确定保水曲线，我们使用压力传感器进行低吸力，并使用蒸汽平衡技术（盐溶液）进行高吸力。对于给定的空隙率，该保水曲线基于水含量与吸力之间的本构关系。从饱和状态开始，由于土壤压实条件的不同，针对不同的初始状态研究了该曲线。结果导致绘制出特征表面w = w（s，e）的图，该表面将水含量表示为吸力和空隙率的函数。可以将其视为经典保留曲线的概括。此外，可以使用饱和度作为吸力和空隙率的函数来表示该曲线。

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