Required Properties of Mastic Asphalt for Use in Road Construction

An important field of application for stable and ageingresistant mastic asphalt is the use in road construction, highway construction or on bridges. Unlike the other types of asphalt, mastic asphalt has almost no voids and can be laid in a self-compacting manner. The aggregates "float" in the mastic (bitumen and filler) and have only a few points of contact with each other. For this reason, the aggregate has a minor influence on the stability of the mastic asphalt compared to rolled asphalt. To ensure sufficient deformation stability, it is necessary to use very hard bitumen. The hard bitumen and the high mastic content are a prerequisite for paving temperatures of up to +250 °C, so that a lower deformation stability can be achieved