The researchers developed a method using computer simulations to optimize the design of asphalt concrete. By manipulating particle locations and sizes, they found the best mix of aggregates for optimal performance. They also considered the mechanical properties of the mixture, like how the asphalt binder interacts with the aggregates. By evaluating different temperatures during compaction, they determined how it affects the properties of the asphalt samples. This method helps in creating stronger and more durable asphalt roads.