Which property relates to the ease with which HMA can be mixed, placed, and compacted?

Answer: B — Workability

Workability is the aspect that describes how easy the hot mix asphalt is to mix, place, and compact. A workable mix flows and fills the space under rollers at the correct temperature, allowing efficient production and a dense, uniform pavement once compacted. This quality depends on binder viscosity at paving temperature, the structure and gradation of the aggregates, moisture, and the overall temperature and air voids in the mix. If the mix is too stiff, it won’t pump, spread, or compact properly, leading to placement difficulties and poor compaction. If it’s too soft, it can smear, track, or move too much under roller pressure. In contrast, stability measures resistance to deformation under load after compaction, impermeability refers to preventing water penetration, and durability concerns long-term performance.