For road construction, the best economical pavement design method depend upon the persons using the pavement.
Otherwise, the pavement designed with honeycombed concrete is best. This design is eco-friendly, as well as it will improve rainwater getting absorbed into the ground will solve drainage problems of leveled ground.
Another next best design is the use of fibers and finish should be trimix concrete wherein excess water is removed and the finish is of float (broom finished). useful to the addition of silane admixture is augmenting water repellant properties.