The present invention relates to a construction process using fine sand as a
subgrade filler. The construction process comprises: 1, determining an optimal
water content; 2, determining a spreading thickness; 3, selecting construction equipment; and 4, controlling a rolling process, wherein the rolling process is divided into
three stage, static pressing is performed one time with a bulldozer or avibration road roller, vibration pressing is performed 4-6 times with the vibration road roller, the speed is gradually increased during the rolling, vibration rolling is performed through strong vibration, the overlap width of the wheel tracks is not less than 1 / 3 m, the wheel tracks are distributed on the whole operation surface, the rolling driving speed is controlled at less than 4 km / h at the beginning stage, the rolling is performed on the straight section
road surface from both edges of the
subgrade to the middle, is performed on the curved section
road surface from the inner side to the outer side of the
subgrade, and is performed longitudinally forward and backward, the
vertical overlap of the adjacent two forward-and-backward sections is more than 20 m so as to achieve effects of no pressing missing and no dead end and ensure the uniform rolling, and the vibration road roller uses 50-80 m as the unit rolling section, and rolls 4-5 times according to the follow sequences thatthe static pressing and the vibration are sequentially performed, the rolling is performed from the edge to the middle, and the speed is gradually increased. According to the present invention, the construction process is simple, fast, feasible, and has the reduced cost.