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The performance of some soils under stabilization in Ondo State, Nigeria

  • A. Y. B. Anifowose
Article

Abstract

This study was aimed at classifying and improving soils from some parts of Ondo State, Nigeria, using cement and lime as stabilizing agents.

The brownish-red clay (Ak-1) and brownish gravelly clay (Ak-2) were derived from migmatitic rocks (consisting of granite gneisses and metasediments) and charnockites in the north and central part, while the reddish clayey sand (Ok-1) was derived from the Quaternary coastal plain sands and alluvial sands in the southern flank of Ondo State.

They have high “fines” ranging between 50 % and 80 % thereby requiring improvement before use as pavement material. Their maximum dry densities were achieved at an average of between 4 % and 6 % cement, although peak CBRs were obtained at between 8 % and 10 % lime. It was observed that cement is a more economical additive in pavement construction.

Keywords

Nigeria Granite Gneiss Cement Content Optimum Moisture Content Lime Content 

Amélioration des caractéristiques des sols par traitement (état d'Ondo, Nigeria)

Résumé

Le but de l'étude présentée était de classer un certain nombre de sols de l'Etat l'Etat d'Ondo au Nigéria, en vue de leur traitement à la chaux et au ciment.

L'argile brun-rouge (Ak-1) et l'argile brune graveleuse (Ak-2) dérivent de migmatites et de charnockites (dans le Nord et le Centre), tandis que le sable argileux rougeâtre (Ok-1) provient de sables de la plaine côtière quaternaire et de sables alluviaux (partie Sud de l'Etat). Leur teneur en fines varie de 50 à 80 %, ce qui impose un traitement avant de pouvoir les utiliser en tant que matériaux de chaussée.. Les densité sèches maximales ont été atteintes avec des ajouts compris entre 4 et 6 % de ciment, alors que les valeurs maximales de C.B.R. correspondent à des teneurs en chaux comprises entre 8 et 10 %.

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Copyright information

© International Association of Engineering Geology 1989

Authors and Affiliations

  • A. Y. B. Anifowose
    • 1
  1. 1.Department of Applied GeologyFederal University of TechnologyAkureNigeria

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