ABSTRACT
Evaluation of ravelled asphalt pavements was conducted in this study as a step toward an effort to investigate the possible causes of ravelling of asphalt pavements in the arid climatic region of Kuwait. Pavement distress surveys along with sand patch tests which were conducted for selected sections to identify the existed distresses and to estimate their pavement condition indices (PCIs). Several cores were extracted from the pavement sections for further laboratory evaluation. Pavement condition surveys and sand patch test results showed that all pavement sections, including the recently maintained sections within the last 3 years, were severely deteriorated due to the existence of ravelling. Sections’ PCIs ranked from “Fair” to “Serious”, indicating significantly poor functional performance. Aggregate sieve analyses and as-built volumetric properties results showed slight deviations from the specified requirements by the state of Kuwait, which can be related to the ravelling problem.
