Stabilizing Compacted Clay against Chemical Attack
Publication: Journal of Geotechnical Engineering
Volume 116, Issue 10
Abstract
Concentrated organic chemicals have been shown to cause large increases in the hydraulic conductivity of compacted clay. Mechanical and chemical methods of stabilizing four different types of compacted clay against chemical attack are investigated. Mechanical stabilization using a large compactive effort (modified Proctor compaction) or application of a compressive stress ≥ 10 psi (70 kPa) is found to render a compacted clay invulnerable to attack by concentrated organic chemicals under laboratory‐test conditions. Attapulgite, a clay mineral having little electrical charge, was found to be relatively unaffected (compared to more common clay minerals such as kaolinite, illite, and smectite) by concentrated organic chemicals. Addition of approximately 7% (by weight) of lime, portland cement, or lime plus sodium silicate greatly improved the ability of compacted clay to resist attack by concentrated organic chemicals; in some cases the amended soils were less permeable to concentrated organic chemicals than the unamended soils were to water.
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References
1.
Acar, Y. B., et al. (1985). “The effect of organic fluids on hydraulic conductivity of compacted kaolinite.” ASTM STP 874, 171–187.
2.
Alther, G., et al. (1984). “Influence of inorganic permeants upon the permeability of bentonite.” ASTM STP 874, 64–73.
3.
Anday, M. D. (1963). “Curing lime stabilized soils.” Highway Res. Rec., 29, 13–24.
4.
Anderson, D. (1982). “Does landfill leachate make clay liners more permeable?” Civ. Engrg., ASCE, 52(9), 66–69.
5.
Bradley, W. F. (1940). “The structural scheme of attapulgite.” Amer. Mineralogist, 25, 405–410.
6.
Broderick, G. P. (1987). “Stabilizing compacted clay against attack by organic chemicals.” Thesis presented to the University of Texas, at Austin, Tex., in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
7.
Brown, K. W., Green, J. W., and Thomas, J. C. (1983). “The influence of selected organic liquids on the permeability of clay liners.” Proc. 9th Annual Res. Symp., Ft. Mitchell, Ky., EPA‐600/9‐82‐002, 179–190.
8.
Brown, K. W., Thomas, J. C., and Green, J. W. (1984). “Permeability of compacted soils to solvents, mixtures, and petroleum products.” Proc., 10th Annual Res. Symp., Cincinnati, Ohio, EPA‐600/9‐84‐007, 124–137.
9.
Diamond, S., and Kinter, E. B. (1965). “Mechanisms of soil‐lime stabilization.” Highway Res. Rec, 92, 83–102.
10.
Diamond, S., White, J. L., and Dolch, W. L. (1963). “Transformation of clay minerals by calcium hydroxide attack.” Clays and Clay Mineral: Proc., 12th Nat. Conf., Pergammon Press, Elmsford, N.Y., 359–379.
11.
Dunn, R. J., and Mitchell, J. K. (1984). “Fluid conductivity testing of fine‐grained soils.” J. Geotech. Engrg., 110(11), 1648–1665.
12.
Eades, J. L., and Grim, R. E. (1960). “Reaction of hydrated lime with pure clay minerals in soil stabilization.” Highway Res. Bd. Bull. 262, 51–63.
13.
Fernandez, F., and Quigley, R. M. (1985). “Hydraulic conductivity of natural clay liners permeated with simple liquid hydrocarbons.” Canadian Geotech. J., 22(2), 205–214.
14.
Fireman, M. (1944). “Permeability measurements on disturbed soil sample.” Soil Sci., 58(5), 337–355.
15.
Foreman, D. E., and Daniel, D. E. (1986). “Permeation of compacted clay with organic chemicals.” J. Geotech. Engrg., 112(7), 669–681.
16.
Green, W. S., Lee, G. F., and Jones, R. A. (1981). “Clay‐soils permeability and hazardous waste storage.” J. Water Pollution Control Fed., 53(8), 1347–1354.
17.
Haden, W. L., and Schwint, I. A. (1967). “Attapulgite: Its properties and applications.” Industrial and Engrg. Chem., 59(Sept.), 58–69.
18.
Herzog, A., and Mitchell, J. K. (1963). “Reactions accompanying stabilization of clay with cement.” Highway Res. Rec, 36, 146–171.
19.
Karol, R. H. (1982). “Chemical grouts and their properties.” Proc. Grouting in Geotech. Engrg., ASCE, New Orleans, La., Feb., 359–377.
20.
Karol, R. H. (1983). Chemical grouting. Marcel Dekker, New York, N.Y.
21.
McNeal, B. L., and Coleman, N. T. (1966). “Effect of solution on soil hydraulic conductivity.” Soil Sci. Soc. of Amer. Proc., 30(3), 308–312.
22.
Mesri, G., and Olson, R. E. (1971). “Mechanisms controlling the permeability of clays.” Clays and Clay Minerals, 19(3), 151–158.
23.
Mitchell, J. K. (1976). Fundamentals of soil behavior. John Wiley and Sons, New York, N.Y.
24.
Mitchell, J. K., and El Jack, S. A. (1965). “The fabric of soil cement and its formation.” Clay and Clay Minerals, Proc. 14th Nat. Conf., Pergamon Press, Elmsford, N.Y., 297–319.
25.
“Moisture density relations of soils and soil‐aggregate mixtures using 5.5 lb (2.49 kg) rammer and 12‐in. (305‐mm) drop.” (1990). Annual book of ASTM standards, ASTM, Philadelphia, Pa., 4.08, 160–164.
26.
Nasiatka, D. M., Shepherd, T. A., and Nelson, J. D. (1981). “Clay liner permeability in low pH environments.” Proc., Symp. on Uranium Mill Tailings Mgmt., Colorado State Univ., Fort Collins, Colo., 627–645.
27.
Peterson, S. R., and Gee, G. W. (1985). “Interactions between acidic solutions and clay liners: Permeability and neutralization.” ASTM STP 874, 229–245.
28.
Sawyer, E. W. (1986). “The characterization and use of clays for gelling salt water fluids.” Preprint Soc. of Mining Engrs. Annual Meeting, 86–110, 1–8.
29.
Sowers, G. F. (1979). Introductory soil mechanics and foundations, 4th Ed., MacMillan Publishing Co., New York, N.Y.
30.
Taylor, H. F. W. (1964). The chemistry of cements. 1, Academic Press, New York, N.Y.
31.
Thompson, M. R. (1966). “Lime reactivity of Illinois soils.” J. Soil Mech. Found. Engrs., ASCE, 92(5), 67–92.
32.
Tobin, W. R., and Wild, P. R. (1985). “A contaminant‐resistant slurry trench.” Proc., Southern Regional Groundwater Conf., San Antonio, Tex., Sept., 193–208.
33.
Winterkorn, H. F., Gibbs, H. J., and Fehrman, R. G. (1942). “Surface chemical factors of importance in the hardening of soils by means of Portland Cement.” Proc., 22nd Annual Meeting, Highway Res. Bd., 385–414.
Information & Authors
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Published In
Journal of Geotechnical Engineering
Volume 116 • Issue 10 • October 1990
Pages: 1549 - 1567
Copyright
Copyright © 1990 ASCE.
History
Published online: Oct 1, 1990
Published in print: Oct 1990
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