期刊
ACTA GEOTECHNICA
卷 6, 期 3, 页码 135-142出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11440-011-0141-8
关键词
High suction; Soil water retention curve; Unsaturated soil; Vapour equilibrium technique
To characterise the water retention behaviour of fine soils, high suction values are applied. In this range of values, the vapour equilibrium technique is usually used. This paper presents an innovative device, a sorption bench that permits the determination of the water retention curve of soil. With this new testing method, the time required for testing is significantly reduced. In addition, this apparatus enables the thermal conditions of a test to be controlled; thus, the applied suction can be better controlled, and the water retention curve for different temperatures can be determined. Another valuable aspect of the device is the adopted technical solution that permits weighing of the samples inside the desiccators at any time. Consequently, the water content kinetics can be defined without disturbing the drying or wetting processes.
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