1174
Proceedings of the 18
th
International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013
REFERENCES
Bishop, A.W. and Donald, I.B. 1961. The experimental study of partly
saturated soil in the triaxial apparatus.
In proceedings of the 5th
International Conference on Soil Mechanics and Foundation
Engineering
, Paris, 1, 13-21.
Bishop, A.W. and Henkel, D.J. 1962. The measurement of soil
properties in the triaxial test, 2nd ed. Edward Arnold (Publisher)
Ltd., London, England.
Fredlund, D.G. and Rahardjo, H. 1993. Chapter 5, Flow lows.
Soil
Mechanics for Unsaturated Soils
. A Wiley-Interscience
Publication, John Wiley & Sons, Inc., 107-123.
Gasmo, J., Hritzuk, K.J., Rahardjo, H. and Leong, E.C. 1999.
Instrumentation of an unsaturated residual soil slope.
Geotechnical
Testing Journal
, GTJODJ, 22(2), 128-137.
4 CONCLUSIONS
This study focused on the use of micro-porous membrane
instead of ceramic disk for measuring soil-water characteristic
curve and the results can be summarized as follows:
Hilf, J.W. 1956. An investigation of pore-water pressure in compacted
cohesive soils, Ph.D. dissertation, Tech. Memo. No.654, U.S. Dep.
Of the Interior, Bureau of Reclamation, Design and Construction
Div., Denver, CO., 654pp.
(1) Soil-water characteristic curve tests were performed in the
low matric suction range. The air entry value of the micro-
porous membrane was similar to that of the ceramic disk. The
equilibrium time required for the SWCC measurements using
the micro-porous membrane was much shorter than the
equilibrium time required for the measurement using the high
air entry ceramic disk. The micro-porous membrane provides
more reasonable testing times for determination of SWCC for
geotechnical practice.
Padilla, J.M., Perera, Y.Y., Houston, W.N., Perez, N., and Fredlund,
D.G. 2006. Quantification of air diffusion through high air-entry
ceramic disk.
Proceedings of the fourth International Conference
on Unsaturated Soils
, UNSAT 2006, Arizona, 2, 1852-1863.
Richards, L.A. 1941. A pressure membrane extraction apparatus for soil
suction.
Soil Science,
51, 377-386.
Tinjum, J. M., Benson, C. H., and Blotz, L. R. 1997. Soil-water
characteristic curves for compacted clays.
Journal of Geotechnical
and Geoenvironmental Engineering
, 123(11), 1060-1069.
(2) The hysteresis between the drying and wetting soil-water
characteristic curves appeared to be negligible when
measurements were made using the micro-porous membrane.
The soil-water characteristic curve measured using the ceramic
disk demonstrated larger hysteresis than the curve obtained
using the micro-porous membrane.
5 ACKNOWLEDGEMENTS
This research was supported by a Scientific Research (C)
(22560497-2010) in a grants-in-Aid for Scientific Research
<KAKENHI> on Japan Society for the Promotion of Science.
