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Development of a commercial tensiometer for triaxial testing of unsaturated soils

机译：不饱和土的三轴检测商业张力的开发

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A new suction probe, the WF-DU tensiometer, has been developed by Wykeham Farrance in collaboration with Durham University. The performance of the new suction probe is assessed in terms of the minimum negative value of pressure that can be measured bythe probe before cavitation. A series of tests performed on four different units of the same design of tensiometer is presented and the results are discussed in relation to the procedure adopted for the saturation of the probe prior to the tests. Otheraspects of the tensiometer response are interpreted by making reference to similar experiments published in the literature. All tensiometers used in this work are calibrated in the positive range of pressure. The extrapolation of such calibration to thedomain of negative pressures is validated by using the tensiometer to measure known values of suction.
机译：WF-DU张力计的新抽吸探针是由Wykeham与达勒姆大学合作开发的。 根据可通过探针在空化之前测量的压力最小负值来评估新抽吸探针的性能。 提出了一系列关于相同设计的四种不同的张力计的不同单元进行的测试，并在测试之前关于探针饱和的过程讨论的结果。 通过参考文献中发表的类似实验，解释张力计响应的课程。 在该工作中使用的所有张力计在正压力范围内校准。 通过使用张力计测量所知道的吸力值，验证这种校准对阴性压力的误差的外推。

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