Energy-saving research on the heating of road asphalt

Heating is the main method to decrease the viscosity of road asphalt, which is in a solid or semi-solid state at ambient temperature, to a certain scope. In china, the traditional asphalt heating method is based on electric heating, which will consume large amounts of energy because of the higher temperature of asphalt construction. As a kind of enormous and clean energy, solar energy can be used for the pre-heating of asphalt, which will receive an effect of energy conservation along with emissions reduction. With the purpose of studying the energy saving in road asphalt heating, the paper expounds on the heating principle of solar energy, as well as the theoretical design of solar heating device.