NDLI: Comparison of the geotechnical properties of crushed shales from Southeastern Nigeria

Content Provider	Springer Nature Link
Author	Okogbue, C. O. Aghamelu, O. P.
Copyright Year	2010
Abstract	Les propriétés géotechniques de schistes concassés des formations d’Abakaliki (Albien), d’Awgu (Coniacien) et d’Enugu (Campanien) ont été évaluées afin de déterminer les usages possibles dans les projets de construction. Les résultats indiquent que les schistes d’Abakaliki sont vraisemblablement adéquats comme matériaux de remblai, bien que les valeurs de limites de liquidité et d’indices de plasticité relativement fortes puissent conduire à des phénomènes de gonflement après compactage. Ils ne conviennent pas comme matériaux de sous-couche ou couche de base dans les structures de chaussées. Les schistes d’Awgu et d’Enugu peuvent aussi servir comme matériaux de remblai, bien que leur fraction fine dépasse les limites des recommandations. Ces deux types de schistes ne conviennent pas comme matériaux de sous-couche ou couche de base, sauf si des traitements sont envisagés. L’utilisation d’équipements lourds de compactage est recommandée lorsque ces schistes sont utilisés dans des projets géotechniques.The geotechnical properties of crushed shales from the Abakaliki (Albian), Awgu (Coniacian) and Enugu (Campanian) Shale Formations have been assessed to determine their suitability for use in construction projects. The results indicate the Abakaliki Shale is likely to be satisfactory as a fill and embankment material, although the relatively high liquid limit and plasticity index may result in some swelling of the compacted shale. It is not suitable as a sub-base or base course for pavements. The Awgu and Enugu Shales may also serve well as fill and embankment materials, although their fines fraction is higher than the recommended limits. Both shales are unsuitable for use as sub-base or base course, unless improved. The use of heavy compaction equipment is recommended wherever these shales are used in geotechnical projects.
Starting Page	587
Ending Page	597
Page Count	11
File Format	PDF
ISSN	14359529
Journal	Bulletin of the International Association of Engineering Geology - Bulletin de l'Association Internationale de Géologie de l'Ingénieur
Volume Number	69
Issue Number	4
e-ISSN	14359537
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-04-28
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Schistes concassés Propriétés géotechniques Construction d’autoroutes Nigéria Geoecology/Natural Processes Nature Conservation Geoengineering, Foundations, Hydraulics Applied Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Geology Geotechnical Engineering and Engineering Geology

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