Abstract:The strength of the semi-rigid base layer is slow in the low temperature environment, which increases the curing time, greatly prolongs the construction period and increases the engineering cost. In order to open traffic as early as possible, this paper studies the influence of vehicle axle load on the base structure during the construction of cement stabilized macadam base under low temperature environment, and obtains the control axle load of the vehicle during construction. Firstly, the indoor mechanical properties of cement stabilized macadam materials with early strength agent in low temperature curing environment were tested. The effects of curing temperature, early strength agent dosage and curing age on the splitting strength and compressive modulus were obtained. The mechanical analysis of the material was carried out by using KENPAVE software, and the maximum tensile stress and bending strength of the layer were compared. Finally, the axle load control of the construction vehicle was obtained. The results show that under the low temperature curing environment, the larger the amount of early strengthening agent, the greater the splitting strength and compressive modulus of cement stabilized macadam material; under low temperature conditions, for the layered discontinuous paving construction scheme, after the foundation layer is cured for 7d and 14d, the layer bottom tensile stress generated by the construction vehicle on the subbase layer is greater than the tensile strength; for the continuous paving construction scheme, the regression equation is obtained through data calculation, which provides a basis for the control of the axle load of the construction vehicle during the construction process.