Lateritic soils occur in the flat plains of Niger Delta. Deltaic lateritic soils are known to be relatively immature compared to those of Southwestern Nigeria. Lateritic soils are the major road construction materials in the Niger Delta region. They are however, subject to rapid deterioration as a result of continuous vehicular loading. The effect of vehicular loading on cohesion is simulated in the laboratory by subjecting the soils to repeated compaction cycles. The results indicate different degrees of particle breakdown with increasing compaction cycles. Quantitative relationships between the number of compaction cycles and cohesion of soils are developed. The polynomial relationships best explain the effect of multi-cyclic compaction on cohesion of the soil.
