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Shear Strength and Consolidation Characteristics of Calcium and Magnesium Illite

Published online by Cambridge University Press:  01 January 2024

Roy E. Olson  and
Frederick Mitronovas
Roy E. Olson
Affiliation:
University of Illinois, Urbana, Illinois, USA
Frederick Mitronovas
Affiliation:
University of Illinois, Urbana, Illinois, USA
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Abstract

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In recent soil mechanics literature attempts have been made to explain the engineering properties of clays in terms of surface chemical theories, particularly the Gouy—Chapman theory. Experimental confirmation of these theoretical predictions have been restricted almost exclusively to studies performed on fine grain size fractions of montmorillonite. It seemed desirable to determine experimentally the effect of physico-chemical variables on the engineering properties of a more typical engineering material. The < 2 μ fraction of Fithian illite was selected.

A study was made of the effect of variations in the pore water electrolyte concentration on the engineering properties of homoionic Ca- and Mg-illite. Pore water electrolyte concentrations ranged from 1 N down to about 10-4 N. Engineering tests included Atterberg limits, one-dimensional consolidation tests, and effective stress triaxial tests.

The electrolyte concentration was found to have only a small effect on the Atterberg limits, the maximum limits occurring at electrolyte concentrations between 0.01 N and 0.1 N. For virgin consolidation the soil seemed strongest at about the same range in electrolyte concentrations but the effect was not large. Electrolyte concentration had almost no effect on the position of the rebound (swelling) curves. The most important effect of electrolyte concentration seemed to be its effect on the geometric arrangement of the particles for samples that were sedimented from dilute suspension. The geometric arrangement of particles seems to be a more significant variable than the osmotic repulsion between particles.

There still appears to be merit in the old mechanical approach where the compression characteristics are explained by elastic bending (reversible), slippage (partially reversible), and rupture (irreversible) of particles. Double layer phenomena seem to exert a much smaller influence on the engineering properites of nonexpanding lattice clay minerals than is commonly inferred in the literature.

Type
Symposium on the Engineering Aspects of the Physico-Chemical Properties of Clays
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 9 , February 1960 , pp. 185 - 209
Copyright
Copyright © The Clay Minerals Society 1960

References

American Society for Testing Materials (1958) Procedures for Testing Soils, April, 544 pp.Google Scholar
Andresen, A., Bjerrum, L., Dibiago, E. and Kjaernsli, B. (1957) Triaxial equipment developed at the Norwegian Geotechnical Institute: Norwegian Geotechnical Inst. Pub. 21, Oslo, 42 pp.Google Scholar
Bishop, A. W. and Henkel, D. J. (1957) The Measurement of Soil Properties in the Triaxial Test: Edward Arnold, Ltd., London, 189 pp.Google Scholar
Bjerrum, L. (1954) Geotechnical properties of Norwegian marine clays: Norwegian Geotechnical Inst. Publ. 4, Oslo, 221 pp.Google Scholar
Bolt, G. H. (1955) Ion adsorption by clays, Soil Sci., v. 79, pp. 267–276.CrossRefGoogle Scholar
Bolt, G. H. (1956) Physico-chemical analysis of the compressibility of pure clays: Geo- technique, v. 6, pp. 86–93.Google Scholar
Bolt, G. H. and Miller, R. I. (1955) Compression studies of illite suspensions: Soil Sci. Soc. Amer. Proc., v. 19, pp. 285.CrossRefGoogle Scholar
Bolt, G. H. and Miller, R. D. (1958) Calculation of total and component potentals of water in soil: Trans. Amer. Geophys. Un., v. 39, pp. 917–928.CrossRefGoogle Scholar
Bower, C. A. (1959) Cation-exchange equilibria in soils affected by sodium salts: Soil Sci., v. 88, pp. 32–35.CrossRefGoogle Scholar
Casagrande, Arthur (1932) The structure of clay and its importance in foundation engineering: J. Boston Soc. of Civil Engr., Contributions to Soil Mechanics, 1925-1940, pp. 72–126.Google Scholar
Cheng, Kuang Lu and Bray, Roger H. (1951) Determination of calcium and magnesium in soil and plant material: Soil Sci., v. 72, pp. 449–459.CrossRefGoogle Scholar
Cornell Progress Report (1949-1951) Nos. 1 through 6.Google Scholar
Diamond, Sidney and Kinter, E. B. (1958) Surface areas of clay minerals as derived from measurements of glycerol retention: in Clays and Clay Minerals, Natl. Acad. Sci.—Natl. Res. Council, publ. 566, pp. 334–347.Google Scholar
Eriksson, Erik (1952) Cation exchange equilibria in clay minerals: Soil Sci., v. 74, pp. 103 to 113.CrossRefGoogle Scholar
Henkel, D. J. and Gilbert, G. D. (1952) The effect of the rubber membrane on the measured triaxial compression strength of clay samples: Geotechnique, v. 3, pp. 20–29.CrossRefGoogle Scholar
Horn, H. M. (1960) An investigation of the frictional characteristics of minerals: Ph. D. thesis, University of Illinois, 106 pp.Google Scholar
Kahn, Allan (1959) Studies on the size and shape of clay particles in aqueous suspension: in Clays and Clay Minerals, Pergamon Press, New York, v. 6, pp. 220–236.Google Scholar
Lagerwerff, J. V. and Bolt, G. H. (1959) Theoretical and experimental analysis of Gapon's equation for ion exchange: Soil Sci., v. 87, pp. 217–222.CrossRefGoogle Scholar
Mitchell, J. K. (1956) The fabric of natural clays and its relation to engineering properties: Proc. Highway Res. Board, v. 35, pp. 693–713.Google Scholar
Orchiston, H. D. (1959) Adsorption of water vapor, V. Homoionic illites at 25 °C: Soil Sci., v. 87, pp. 276–282.CrossRefGoogle Scholar
Bosenqvist, I. Th. (1955) Investigation of the clay-electrolyte-water system: Norwegian Geotechnical Inst. Pub. 9, Oslo, 125 pp.Google Scholar
Salas, J. A. and Serratosa, J. M. (1953) Compressibility of clays: Proc. 3rd Int. Conf. on Soil Mechn. and Found. Engr., Zurich, v. 1, pp. 192–198.Google Scholar
Samuels, S. G. (1950) The effect of base exchange on the engineering properties of clays: Building Research Station, Dept. Sci. and Ind. Res., Garston, England, Note C-176, 28 pp.Google Scholar
Taylor, D. W. (1942) Research on consolidation of clays: M.I.T. Publ. Serial 82, August, 147 pp.Google Scholar
Taylor, D. W. (1948) Fundamentals of Soil Mechanics: John Wiley and Sons, New York, 700 pp.Google Scholar
Terzaghi, K. T. (1936) Simple tests to determine hydrosystatic uplift: Eng. News Rec., v. 116, pp. 872–875.Google Scholar
van Olphen, H. (1954) Interlayer forces in bentonite: in Clays and Clay Minerals, Natl. Acad. Sci.—Natl. Res. Council, pub. 327, pp. 418–438.Google Scholar
van Olphen, H. (1960) Discussion of paper, Swelling pressures of dilute Na-montmorillonite pastes, by Warkentin and Schofield: in Clays and Clay Minerals (7th Conf.), Pergamon Press, New York, pp. 348–349.Google Scholar
Waidelich, W. C. (1957) Physico-chemical factors influencing the consolidation of soils: M.S. thesis, Princeton University, 71 pp.Google Scholar
Warkentin, B. P., Bolt, G. H. and Miller, R. D. (1957) Swelling pressures of montmorillonite: Soil Sci. Soc. Am., Proc., v. 21, pp. 495–497.CrossRefGoogle Scholar
White, W. A. (1958) Water sorption properties of homoionic clay minerals: III. Stale Geol. Survey, Rep. of Investigation 208, 46 pp.Google Scholar
Yong, R. N. and Warkentin, B. P. (1959) A physico-chemical analysis of high swelling clays subject to loading: Preprint of a paper presented at the A.S.T.M. Mexico City Conference.Google Scholar