Effect of Degree of Weathering on Dynamic Properties of Residual Soils
Publication: Journal of Geotechnical Engineering
Volume 122, Issue 12
Abstract
The process of soil formation in the tropics is quite different than that of more temperate regions. The weathering processes tend to be intensified by the warm and humid climates that are prevalent in tropical regions. Chemical weathering processes that dominate in these regions, such as decomposition and dissolution, are fairly well understood phenomena. However, the effect this weathering has on the physical, mechanical, and dynamic properties of the rock/soil is not fully understood. This paper presents some laboratory test results and correlations that indicate behavioral trends to be caused by the effects that weathering has on a residual soil from the western coast of Puerto Rico. The study focuses on the dynamic shear modulus G and material damping ratio D of both natural (undisturbed) and remolded samples, for lowto mid-level amplitudes of vibration. The understanding of these effects will allow for a better prediction of phenomena such as soil amplification that may trigger landslides in such soil formations. This study was accomplished with the aid of a computerized resonant column device. Correlations and empirical formulations are presented that demonstrate the effects that the degree of weathering has on the dynamic properties of these residual soils for undisturbed and remolded samples.
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References
1.
Brand, E. W. (1982). “Analysis and design in residual soils.”Proc., Engrg., and Constr. in Tropical and Residual Soils, ASCE Conf., ASCE, New York, N.Y.
2.
Davis, R.(1995). “Effects of weathering on site response.”Earthquake Engrg. and Struct. Dynamics, John Wiley and Sons, Ltd., Chichester, England, 24, 301–309.
3.
Dobry, R., and Vucetic, M. (1987). “State-of-the-art report: Dynamic properties and seismic response of soft clay deposits.”Proc., Int. Symp. on Geotech. Engrg. of Soft Soils, Mexican Society of Soil Mechanics and Foundations, Mexico City, Vol. 2, 51–87.
4.
Hardin, B. O., and Black, W. L.(1966). “Sand stiffness under various triaxial stresses.”J. Soil Mech. and Found. Div., ASCE, 92(2), 27–42.
5.
Hoyos, L. R. (1993). “Dynamic properties of Puertorican residual soils using the resonant column device,” MSc dissertation, Univ. of Puerto Rico, Mayaguez, P.R., 85–87.
6.
Huoo-Ni, S. (1987). “Dynamic properties of sand under true triaxial stress states from resonant/column torsional shear tests,” PhD dissertation, Univ. of Texas, Austin.
7.
Isenhower, W. M. (1979). “Torsional simple shear/resonant column properties of San Francisco Bay mud,” MSc thesis, Univ. of Texas, Austin.
8.
Little, A. L. (1969). “The engineering classification of residual tropical soils.”Engrg. Properties of Lateritic Soils, Seventh Int. Conf. on Soil Mech. and Found. Engrg., Mexican Society of Soil Mechanics, Mexico City, 1–10.
9.
McCann, W. et al. (1991). “Preliminary locations of earthquakes recorded near Puerto Rico.”Seismic Bull., Univ. of Puerto Rico, Dept. of Geol., Mayagũez, P. R.
10.
Mitchell, J. K. (1982). “Engineering properties of tropical residual soils.”Proc., Engrg. and Constr. in Tropical and Residual Soils, ASCE Conf., ASCE, New York, N.Y., 30–57.
11.
Molinelli, J. (1985). “Earthquake vulnerability study for the metropolitan area of San Juan, Puerto Rico.”Rep. Prepared for the Department of Natural Resources, Government of Puerto Rico, Department of Natural Resources Printing, Earthquake Safety Commission of Puerto Rico, San Juan, P.R.
12.
Richart, F. E. (1975). “Some effects of dynamic soil properties on soil-structure interaction.”J. Geotech. Engrg. Div., ASCE, 101(1), 21–24.
13.
Stokoe, II, K. H., Anderson, A. M., Hoar, R. J., and Isenhower, W. M. (1978). “In-situ and laboratory shear velocity and modulus.”Proc., Earthquake Engrg. and Soil Dynamics Conf., ASCE, New York, N.Y.
14.
Stokoe, K. H., Nasir, S. H., and Andrus, R. D. (1991). “In situ and laboratory measurements of the dynamic properties of cemented granular soils: A case history.”U.S./Brazil Geotech. Engrg. Workshop, A. S. Nieto, ed., Univ. of Illinois, Urbana, Ill., 1–39.
15.
Test methods for modulus and damping of soils by the resonant column method; Standard D 4015-92. (1993). ASTM, Philadelphia, Pa., 581–593.
16.
Townsend, F. C., Manke, P. G., and Parcher, J. V. (1969). “Effects of remoulding on the properties of a lateritic soil.”Hwy. Res. Rec., No. 405, Hwy. Res. Board, Washington, D.C., 76–84.
17.
Tuncer, R. E., and Lohnes, R. A. (1977). “An engineering classification of certain basalt-derived lateritic soils.”Engrg. Geol., Amsterdam, The Netherlands, 319–339.
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Copyright © 1996 American Society of Civil Engineers.
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Published online: Dec 1, 1996
Published in print: Dec 1996
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