PURPOSE: To automate the process of loading a mixture stored in a mixture silo, onto a truck.

CONSTITUTION: A hopper 6 for loading a mixture is movably provided below a mixture silo in which an asphalt mixture is stored. In addition, a position detecting sensor 10 is properly arranged to detect the stop position of the truck 9 entering a mixture loading area 11. The position detecting sensor 10 is operated for the truck 9 which stops at the mixture loading area 11 at the time of mixture delivery to detect the stop position of the truck 9 and the size of the loading platform 12 so as to determine the mixture delivery pattern based on the position and the size of the loading platform and the loading quantity. Based on this pattern, the hopper 6 for loading the mixture is controlled to move, automatically loading the mixture on the vacnat space of the loading platform 12 in order.