Asphalt’s properties are greatly influenced by the thermal conditions of the road, which is in turn shaped by the ambient temperature. The higher the temperature, the lower the rigidity of the material and thus the higher the probability of damage. Higher temperatures can also lead to damage in concrete carriageways. As heat events increase due to climate change, temperature-related variables have to be adapted accordingly during the dimensioning of road pavements.
The strategies of taking weather influences into account at the dimensioning stage of road pavements as applied today, whether in the case of a new construction or maintenance of existing roads, are based on long-term series of meteorological observations. The derived parameters are mean values of past extreme weather events. When planning a road’s future period of use, not taking climate change into account risks miscalculation of the dimensioning and thus also risks shortening the period of use.
Therefore, the research project investigated to which extent an adaptation of weather-dependent input parameters in standardised and mathematical dimensioning of road pave-ments is necessary.