Over the past years an increase of damages on asphalt roads with no relation to traffic-related or climatic stresses has been observed. To identify possible reasons, a suitable criterion to address masticquality (bitumen with filler) was searched. Therefore the aim of this thesis is to find a test for the quality of the mastic in asphalt. As testing instrument, the dynamic shear rheometer was chosen. In this experimental setup a three millimeters high sample with a diameter of eight millimeters is mounted force-fit between two plates, and subsequently stressed by sinusoidal oscillation. The fatigue failure should occur in the middle of the specimen . To guarantee this, a special geometry fort he specimen is selected. With the use of a silicone mold, a necking is created in the middle, to receive a stress concentration at this point. It was thus possible to ensure that for all specimens a fatigue failure occurred. In a testing program, five different fillers were mixed with a binder 70/100 (PG 58-28) in different ratios. After evaluation of the deviations of the results, a mixing ratio of bitumen:filler = 1:1.5 was determined, with which the fatigue tests were conducted. Before the fatigue tests could be started, the linear viscoelastic (LVE) limit had to be determined. Only within this range the desired parameters such as the dynamic modulus -G*- and the phase lag - are defined, and within this range the fatigue tests should take place . Therefore, with all mastic samples amplitude sweeps were carried out to determine the LVE limit. With that shear stress the fatigue tests took place. It could be shown, that the developed test method is copable to address the rheological parameter and the fatigue characteristics of mastic.