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Development of a New High-Suction Tensiometer
Nowadays, direct measurement of matric suction on unsaturated soils in the laboratory is still a great challenge for researchers. In this study, two new high-suction tensiometers were designed and fabricated based on commercial pressure transducers. Ceramic discs with air-entry value of 15 bar were used as the filters for both tensiometers. The design, fabrication, saturation, and calibration processes are addressed in detail. Also, the maximum attainable suction was determined to be around 1100 kPa through free evaporation tests. Compared with existing high-suction tensiometers, both newly developed high-suction tensiometers were proved to be robust and reliable for measuring matric suction of unsaturated soils.
Development of a New High-Suction Tensiometer
Nowadays, direct measurement of matric suction on unsaturated soils in the laboratory is still a great challenge for researchers. In this study, two new high-suction tensiometers were designed and fabricated based on commercial pressure transducers. Ceramic discs with air-entry value of 15 bar were used as the filters for both tensiometers. The design, fabrication, saturation, and calibration processes are addressed in detail. Also, the maximum attainable suction was determined to be around 1100 kPa through free evaporation tests. Compared with existing high-suction tensiometers, both newly developed high-suction tensiometers were proved to be robust and reliable for measuring matric suction of unsaturated soils.
Development of a New High-Suction Tensiometer
Li, Lin (Autor:in) / Zhang, Xiong (Autor:in)
Geo-Shanghai 2014 ; 2014 ; Shanghai, China
Soil Behavior and Geomechanics ; 416-425
05.05.2014
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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