The heat exchange in the edge area – the problem of hot mix asphalt compaction

The temperature of asphalt mix during its laying is not homogenous. Edges are a particular place. An intensive collection of heat occurs there through horizontal (upper and bottom) surfaces and lateral surface. An additional factor is the thermal layer created on the surface of the layer which multiplies the potential to collect the heat by the surroundings. The theoretical calculations carried out and confirmed by laboratory tests and measurements on the road allow foreseeing the speed of temperature drops for these areas. This facilitates the correct planning of the process of compaction, and by the same obtaining the required density of mix.