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Stabilisation of lateritic soils as a raw material for building blocks

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Abstract

 Some lateritic soils derived from different parent rocks in the Akure area of Nigeria were studied. The laboratory investigations indicated that most of these tropical soils, which were erroneously referred to as lateritic clays, actually contained very low proportions of clay particles. Migmatite-derived soils were found to respond better to stabilisation than those derived from charnockite. Firing was found to be the most important way of improving the durability of lateritic soil blocks as sintering takes place within the soil grain interstices. Iron concretions may be deleterious as they serve as focal points for sample failure.

Résumé

Quelques sols latéritiques issus de différentes roches-mères dans la région de Akure au Nigeria ont étéétudiés. Les études de laboratoire ont montré que la plupart de ces sols tropicaux, qui étaient considérés comme des argiles latéritiques de façon erronée, contenaient en fait de très faibles proportions de particules d'argile. Les sols issus de migmatites ont mieux répondu à la stabilisation que ceux issus de charnockites. Il a été montré que la cuisson constituait le meilleur moyen d'améliorer la durabilité des blocs de sols latéritiques dans la mesure où le phénomène de frittage se réalisait en diminuant la porosité du milieu. Les concrétions ferrugineuses peuvent être nocives, servant de zones d'initiation de la rupture.

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Received: 28 September 1994 · Accepted: 6 June 1999

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Anifowose, A. Stabilisation of lateritic soils as a raw material for building blocks. Bull Eng Geol Env 58, 151–157 (2000). https://doi.org/10.1007/s100640050009

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  • DOI: https://doi.org/10.1007/s100640050009

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