Abstract:
This study evaluates the inherent suitability of select lateritic soils as potential construction materials for various layers within flexible pavements. The assessment focuses on the base course, sub-base, and sub-grade layers. Laboratory analyses of samples extracted from these layers reveal that the California Bearing Ratio (CBR) values of the sub-grade materials meet the required standards. However, approximately 40% of sub-base locations and 70% of base course locations exhibit CBR values lower than those specified by Nigeria’s local codes. Moreover, the essential fine particle proportions are notably lacking. This deficiency has led to the failure of the road at multiple sections, including the roadway and shoulders. The absence of fine particles is attributed to inadequate drainage infrastructure at the failed road segments or potential deficiencies in quality control during construction. Given the road’s significance in Nigeria, a comprehensive reconstruction with proper drainage provisions is recommended, alongside the use of appropriate materials to ensure its durability.
EVALUATING IN-SITU GEOTECHNICAL PROPERTIES OF ROAD PAVEMENT LAYERS, GET MORE, ACTUARIAL SCIENCE PROJECT TOPICS AND MATERIALS
