โ Scribed by P.O. Omotosho; J.O. Akinmusuru
No coin nor oath required. For personal study only.
A study was made of the influence of multi-recycling/recompaction (referred to as multi-cyclic compaction) on some basic properties of a Pre-cambrian-rock-derived lateritic sample used mainly for embankment construction in Western Nigeria.
The sample was recycled several times while gradation, consistency and shear characteristics were investigated as the compaction cycle progressed. As a result of disintegration of the "micro-clusters", in which state lateritic soils exist in situ, the soil became better graded (Uc and percentage of fines increased) and less plastic (PI decreases); the friction angle, q~, decreases; while cohesion, C, increases, up to about cycle 8 after which they stabilize.
In practical terms, dry density increases with better grading resulting in the reduction of permeability and compressibility characteristics. As a result, recycled soil requires less effort to achieve a pre-determined density, while air drying could bring the soil back to its original state through further aggregation or micro-clustering.
๐ SIMILAR VOLUMES
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