Abstract
ABSTRACTGeosynthetic interlayers in asphalt systems have become a convenient technology for lifetime prolongation in road construction engineering. Established testing methods for characterizing construction materials can be used to describe and evaluate these innovative systems. This study compares three groups of asphalt interlayer systems (stress absorbing membrane interlayer = SAMI, asphalt reinforcement, SAMI + asphalt reinforcement) represented by 10 different geosynthetic interlayers in terms of crack growth resistance and strength. The results will be presented in relation to asphalt reference systems without interlayer. The mechanical and fracture–mechanical properties were determined by means of the wedge splitting test (WST) according to Tschegg and partially by the pull‐out test. Due to temperature dependences of the material properties of asphalt, the tests have been performed at −10 °C, 0 °C and +10 °C specimen temperature.
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