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Basic geotechnical properties, chemistry and mineralogy of some laterite soils from S.W. Nigeria

Propriétés géotechniques fondamentales, chimie et minéralogie de quelques sols Latéritiques du sud ouest du Nigéria

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Abstract

Laterite soils derived from four basement complex rocks and a sedimentary formation from Southwestern Nigeria are analysed for their basic geotechnical properties, chemistry and mineralogy. Results obtained show that the granite gneiss derived and the sedimentary laterite soils are good engineering materials. The amphibolite derived laterite soil has a linear shrinkage of 10% and contains SO 2−4 ions. The quartz schist derived and the micaschist derived laterite soils contain rather high amounts of muscovite −30% and 25% respectively.

The usability of the laterite soils and the implications of the presence of SO 2−4 ions and mica and the high linear shrinkage are discussed.

Résumé

Les propriétés géotechniques fondamentales, la chimie et la minéralogie de sols latéritiques dérivés de quatre roches du socle et d'une formation sédimentaire du sud-ouest du Nigéria sont analysées. Les résultats obtenus montrent que les sols latéritiques dérivés de granite-gneiss et de sédiments sont de bons matériaux géotechniques. Le sols latéritiques dérivés d'amphibolites ont un retrait linéaire de 10% et contiennent des ions SO 2−4 . Les sols latéritiques dérivés de schistes quartzeux et de micaschistes contiennent des taux de muscovite assez élevés, 30% et 25% respectivement.

L'utilisation des sols latéritiques et les implications de la présence d'ions SO 2−4 et de micas ainsi que le fort retrait linéaire sont discutés.

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Authors and Affiliations

  1. Department of Geology, University of Ilorin, PMB 1515, Ilorin, Nigeria

    Ogunsanwo Olufemi

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  1. Ogunsanwo Olufemi
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Olufemi, O. Basic geotechnical properties, chemistry and mineralogy of some laterite soils from S.W. Nigeria. Bulletin of the International Association of Engineering Geology 37, 131–135 (1988). https://doi.org/10.1007/BF02590379

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