The Impact of Water Intrusion on Flexible Pavement Foundations: a Case Study of Labana Farm Road, Aliero Local Government Area

This research focuses on the effects of water intrusion on flexible road pavements, with a case study of Labana Farm Road in Aliero Local Government Area, Kebbi State, Nigeria. The study investigates the mechanisms of water infiltration and its impact on road deterioration, particularly in terms of cracking, rutting, and pothole formation. A comprehensive geotechnical analysis was conducted using soil samples collected from both water intrusion-affected and unaffected areas. Key laboratory tests such as moisture-density relationship, Atterberg limits, specific gravity, Sieve Analysis, and California Bearing Ratio (CBR) were performed to evaluate the engineering properties of the soil. The CBR values for affected points (23.79% and 48.45%) are significantly below the standard specification (≥80%), indicating compromised structural integrity. The results revealed that samples from affected areas exhibited an irregular compaction values, where base indicating compromised load-bearing capacity. The findings align with existing literature that highlights the detrimental impact of moisture on soil strength and road performance. This study emphasizes the importance of effective drainage and moisture control in the design and maintenance of flexible pavements to mitigate water-induced damage. Recommendations for improved construction practices and preventive measures are provided to enhance pavement longevity in water-prone regions. This study evaluated the effects of water intrusion on flexible pavement along Labana Farm Road in Kebbi State, Nigeria, assessing soil properties and traffic volume for road improvement data.