Comparison of suction and oedometer methods for the measurement of swell pressure


Cokca E.

QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY, cilt.33, ss.141-147, 2000 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 33
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1144/qjegh.33.2.141
  • Dergi Adı: QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY
  • Sayfa Sayıları: ss.141-147

Özet

In this paper, a thermocouple psychrometric technique is used to measure soil suction and assess the reliability of a swell pressure prediction method. Kaolinite-bentonite clay mixtures were prepared to obtain expansive soils with a wide range of plasticities. Suction measurements using thermocouple psychrometers and constant volume swell tests in oedometers were made on statically compacted :specimens. Soil suction-water content relationships were evaluated. The results indicate a linear relationship between the logarithm of initial soil suction and swell pressure measured in the oedometer. it has been shown that the method proposed by Johnson & Snethen for the prediction of swell pressure using suction measurements overestimates the ultimate swell pressure.