Which property describes the ability of HMA to withstand repeated loading without failure?

• A. Fatigue Resistance
• B. Durability
• C. Stability
• D. Workability

Answer: (A)

The main concept is how a hot mix asphalt layer holds up under many repeated loads without cracking or failing. HMA that can endure many traffic cycles without developing extensive cracks has high fatigue resistance. This property captures the material’s ability to resist the initiation and growth of fatigue cracks as wheels repeatedly pass over it, which is the core failure mechanism in flexible pavements under traffic. Fatigue resistance is what differentiates performance under cyclic loading from other aspects like weathering or placement ease. Durability focuses on aging and environmental attack, stability relates to resisting permanent deformation or rutting at high temperatures, and workability is about how easy the mix is to lay down and compact. So, the best descriptor for the ability to withstand repeated loading without failure is fatigue resistance.