This report investigates the current state-of-the-art and state-of-the-practice in the design and construction of unbound aggregate pavement layers. Authored by E. Tutumluer and published through TRB's National Cooperative Highway Research Program (NCHRP), the synthesis consolidates effective practices aimed at enhancing pavement performance and longevity. It focuses on material selection, design methodologies, and construction techniques for these critical pavement components.

This NCHRP Synthesis is a technical document intended for professionals in the field of transportation engineering and pavement construction. It serves as a comprehensive resource, consolidating current knowledge and practices to inform design and construction decisions. The report's focus on practical application suggests it is valued for its utility in improving infrastructure durability and performance.