Abstract
An experimental study on the liquefaction of clayey soils was conducted under ICL Project M124 “The influence of clay mineralogy and ground water chemistry on the mechanism of landslides” in order to better understand the mechanism of this phenomenon. The first section of this study deals with artificial mixtures of sand with different clays while the second is concerned with natural soils collected from landslides. The results from the first section are presented in this article. The investigation was conducted by means of a ring-shear apparatus and a scanning electron microscope (SEM). The results obtained for artificial mixtures enabled us to draw a line between liquefiable and non-liquefiable clayey soils and to define a criterion to estimate their liquefaction potential. In addition, the influence of clay content and clay mineralogy on the cyclic behavior of clayey soil was studied. It was found that an increase in clay content as well as the presence of bentonite clay raised the soil resistance to liquefaction. The analysis of microstructures of bentonite-sand mixtures along with the results from ring-shear tests revealed that the soil microstructure is the key factor in determining the dynamic properties of soil. For example, in the microstruc-tures of soils vulnerable to liquefaction, the clay matter was observed to form “clay bridges” between sand grains that were easily destroyed during cyclic loading. In the microstructures of soils resistant to liquefaction, the clay matter seemed to form a matrix that prevented sand grains from liquefaction. The influence of pore water chemistry on the liquefaction potential of artificial mixtures was also studied. It was found that the presence of ions in pore water changed the microstructure of clayey soil, thus making it more vulnerable to liquefaction.
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References
Gratchev IB, Sassa K, Fukuoka H (2004) Cyclic behavior of clayey sands under different physico-chemical conditions. In: Lacerda W, Ehrlich M, Fontoura S, Sayao A (eds) Proceedings 9th International Symposium on Landslides, Rio de Janeiro, Brazil. Balkema, vol. 1, pp 701–704
Gratchev IB, Sassa K, Fukuoka H (2006) How reliable is the plasticity index for estimating the liquefaction potential of clayey sands? J Geotech Geoenviron (in press)
Ishihara K, Kokusho T, Silver M (1989) Resent developments in evaluating liquefaction characteristics of local soils. In: Proceedings of the 12th International Conference on Soil Mechanics and Foundation Engineering, Rio de Janeiro, vol. IV
Ishihara K, Okusa S, Oyagi N, Ischuk A (1990) Liquefaction induced flow slide in the collapsible loess deposit in Soviet Tadjik. Soils and Foundations 30(4):73–89
Miura S, Kawamura S, Yagi, K (1995) Liquefaction damage of sandy and volcanic grounds in the 1993 Hokkaido Nansei-Oki earthquake. In: Proc. 3rd Int. Conf. on Recent Advances in Geotechnical Earthq. Engg. and Soil Dynamics, St. Louis, MO, vol. 1, pp 193–196
Osipov VI (1986) Liquefaction of soils and dynamic problems. In: Rimoldi HV (ed) Proceeding 5th International Congress International Association of Engineering Geology, Buenos Aires. Balkema, pp 2599–2622
Osipov VI, Sokolov VN (1978) Microstructure of recent clay sediments examined by scanning electron microscopy. In: Whalley WB (eds) Scanning electron microscopy in the study of sediments. Geo Abstracts, Norwich, England, pp 29–40
Osipov VI, Nilolaeva SK, Sokolov VN (1984) Microstructural changes associated with thixotropic phenomena in clay soils. Geotechnique 34(2):293–303
Perlea VG, Koester JP, Prakash S (1999) How liquefiable are cohesive soils. In: Seco e Pinto P (ed) Proceedings of earthquake geotechnical engineering, Lisboa. Balkema, vol. 2, pp 611–618
Sassa K (1985) The mechanism of debris flows. In: Proceedings 11th International Conference on Soil Mech and Foundation Engineering, San Francisco, pp 1173–1176
Sassa K, Fukuoka H, Wang G, Ishikawa N (2004) Undrained dynamic loading ring shear apparatus and application for landslide dynamics. Landslides 1(1):7–21
Sergeyev YM, Grabowska-Olszewska B, Osipov VI, Sokolov VN, Kolomenski YN (1980) The classification of microstructures of clay soils. J Microsc-Oxford 120(3):237–260
Youd TL, Holzer TL, Bennett MJ (1989) Liquefaction lessons learned from the Imperial Valley California. Special volume for Discussion Session on Influence of Local Soils on Seismic Response, 12th ICSMFE, Rio de Janeiro
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Osipov, V.I., Gratchev, I.B., Sassa, K. (2005). The Mechanism of Liquefaction of Clayey Soils (M124). In: Sassa, K., Fukuoka, H., Wang, F., Wang, G. (eds) Landslides. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-28680-2_15
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DOI: https://doi.org/10.1007/3-540-28680-2_15
Publisher Name: Springer, Berlin, Heidelberg
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