Abstract
Laterite soils occupy large parts of the tropical regions of the world. They are used, in the compacted state, as bases for roads and air-field pavements, as fills for foundations, embankments and earth dams. Although the response to load with decreasing void ratio (compressibility) is important under the conditions of use, it has not been the subject of considerable study. Engineering studies in laterite soils have been limited to classification, compaction characteristics and sometimes, shear strength.
The compressibility characteristics of a compacted laterite soil from Paraiba State, North-East Brazil has been examined in the oedometer. The results indicate the presence of collapsible soil grains which comminute under load. The behaviour of soil with collapsible soil grains is described.
Résumé
Les sols latérites se trouvent dans la plupart des régions tropicales du monde. Ils sont utilisés, dans l'étât compacté, comme base de route, matériaux de fondations, remblais et barrage en terre. Bien que la réponse sur pression avec une diminution de taux de porosité est considerée importante lorsque il est utilisé comme mentionné ci-dessus, ceci n'etait pas bien traité auparavant. Les études d'ingénieur en sols latérites ont été limitées en classification, caracteristiques de compaction et parfois résistance au cissailement.
Les caractéristiques de compressibilité d'un sol de latérite compacté dans l'étât Paraiba, en Nord-Est de Brésil ont été examinées en utilisant le consolidometre. Les résultats obtenues indiquent la présence des grains de sol qui se fragmentent sur l'effet de pression. Le comportement d'un sol avec des grains qui peuvent s'effondrer est d'écrit.
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Malomo, S. The compressibility characteristics of a compacted laterite soil. Bulletin of the International Association of Engineering Geology 24, 151–154 (1981). https://doi.org/10.1007/BF02595266
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DOI: https://doi.org/10.1007/BF02595266