Determining the minimum speed of trucks on automobile roads in hot climate

Abstract

The article identifies the effect of the speed of heavy trucks on the strength of the pavement. The effect of road pavement temperature on its strength is high, and the load falling from heavy trucks during the high temperature causes various deformations on the pavement surface. The study observed a decrease in pavement strength as a result of the increase in air temperature. The pavement strength decreased to 3330 MPA at 30°C and the pavement temperature to 423 MPA at 70°C. With this in mind, to ensure the normal service life of the highway, a minimum speed has been developed according to the number of axles of heavy trucks during the hot summer months. As the number of axles of heavy trucks increases, so does the minimum moving speed. According to the type of truck axles, it has been determined that the strength of the pavement also increases as the speed of the truck increases.