Enhanced Flexible Pavement Performance Using Treated Compared to Untreated Aggregate Bases: A Comparative Case Study in the Southern United States

One of the important aspects highway design is aggregates. Aggregates strength and consistency has an effect on pavement structure’s overall performance. The base material near site construction doesn’t always match requirements carrying quality aggregate raises cost construction. Stabilizing agents such as asphalt cement, lime, fly ash were used to improve these materials in order make greater use locally available materials. Layer present pavements structure them influence compressive strain tensile layer subgrade respectively are influenced by stiffness layer. causing rutting fatigue cracking top region at bottom layer, respectively. In this research study, field performance (cracking, rutting, surface roughness) sections with untreated treated bases collated assess impact stabilizing agents. performed well significantly compared terms roughness cracking. higher than cumulative average values all 3 distresses averaging 5 times lower sections. combined IRI averaged about 1.5 0.11 inches smaller, those