Abstract
Variability in the shear strength characteristics of a fine grained amphibolite derived laterite soil within an area of one square metre in the same horizon is investigated by means of consolidated undrained triaxial compression tests.
The shear strength parameters in terms of both effective and total stresses show remarkable variabilities. Cohesion values have coenfficients of variation of 65.1% and 54.7% respectively while the angle of internal friction values have coefficients of variation of 16.1% and 23.6% respectively.
The chemistry of the soil has been found to be essentially constant while the spatial distribution of the goethite present was found to be non-uniform
The variability in the shear strength characteristics of the soil is attributed to the inconsistent cementation of the soil particles by the goethite.
Résumé
La variation des caractéristiques de la résistance au cisaillement d'un sol latéritique provenant d'une amphibolite à grains fins, dans un mètre carré, est recherchée en se servant des essais de compression triaxiale de consolidation non drainée.
Les paramètres de la résistance au cisaillement concernant les charges effectives et totales montrent des variations importantes. Les confficients de variation pour la cohésion s'élèvent à 65,1% et 54,7%, tandis que les coefficients de variation pour l'angle de frottement interne s'élèvent à 16,1% et 23,6%.
La chimie du sol est constante, tandis que la distribution spatiale de goethite n'est pas uniforme. La variation des caractéristiques de la résistance au cisaillement est attribuable à la cimentation irrégulière des particules du sol par la goethite.
Similar content being viewed by others
Refereces
BAZETT D.J. and BELL E.S. (1963): Influences of Placement Condition on Shear Test Results on Compacted Soil. Laboratory Shear Testing of Soils. ASTM STP No 361, p. 431–434.
BISHOP A.W. and HENKEL D.J. (1962): The Measurement of Soil Properties in the Triaxial Test. Edward Arnold Ltd. London 227 p.
DIN 18137/2 (1969): Baugrund: Untersuchung von Boden-proben: Dreiaxial versuch. Deutsches Institut für Normung e. V. Beuth Verlag GmbH, Berlin und Köln 1.
LUMB P. (1962): General Nature of the Soils of Hong-Kong. Proc. Symp. Hong-Kong Soils, Hong-Kong 1962, p. 19–31.
LUMB P. (1965): The Residual Soils of Hong-Kong.Geotechnique, 15 (2), p. 180–194.
LUNDGREN R. (1969): Field performance General Report: Proc. Spec. Sess. Engin. Props. of Lateritic Soils. VH ICSMFE Vol. 2, p. 45–57.
MAINI K.S. (1971): Einfluss der Endflachenreibung und der Verformungeschwindigkeit auf die Ergebnisse des Dreiaxialversuches bei Verdichteten Boden. Doktor-Ingenieurs Dissertation, Technische Hochschule, München. (Unpublished).
NEWILL D. (1961): A Laboratory Investigation of Two Red Clays from Kenya.Geotechnique. 11 (4), p. 302–318.
OGUNSANWO O. (1984): Basic Index Properties, Mineralogy and Microstructure of an Amphibolite derived Laterite Soil. (In print).
SHERWOOD P.T. (1967): Classification Tests on African Red Clays and Keupler Marl.Q. J. eng. Geol., Vol. 1, No. 1, p. 47–55.
VON SOOS P., ADOLF H. and KRESSIERER J. (1974): Der Triaxialversuch. Handbuch aus dem Institute für Grundbau und Bodenmechanik der Technische Universität München. (Unpublished).
WALLACE K.B. (1973): Structural Behaviour of Residual Soils of the continually wet Highlands of Papua New Guinea.Geotechnique. 23 (2), p. 203–218.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Olufemi, O. Variability in the shear strength characteristics of an amphibolite derived laterite soil. Bulletin of the International Association of Engineering Geology 32, 111–115 (1985). https://doi.org/10.1007/BF02594773
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02594773