Performance Assessment of HMAM under Different ClimateZones Using a Multi-Criteria Decision Approach

Purpose: This study investigates the comprehensive performance of high-modulus asphalt mixtures (HMAM) with a focus on their climate-specific suitability, which is insufficiently addressed in existing research.Methodology: Four asphalt mixtures-70-penetration asphalt, styrenebutadiene-styrene (SBS)-modified asphalt, HMAM-Lubao, and HMAM-H7686-were evaluated using wheel-tracking (rutting), low-temperature bending, water stability, and uniaxial compression tests.An improved analytic hierarchy process (AHP) was applied to assign indicator weights across different climate zones.Findings: HMAMs exhibited superior rutting resistance, water stability, and modulus compared with conventional and SBS-modified mixtures.Among them, HMAM-H7686 ranked highest in hot and rainy zones, while HMAM-Lubao demonstrated more balanced performance in colder climates.Value: This study establishes an adaptable and transparent evaluation framework by integrating multiindex laboratory testing with an improved AHP method.The framework provides practical guidance for selecting asphalt mixtures according to climate zones, supporting more durable pavement design and construction.