Abstract
In this paper, the authors present the experimental results obtained in the laboratory by using the ASTRA interface shear test for the performance-related characterisation of tack coat emulsions. The test focuses on the failure properties of bituminous multi-layered systems and yields results which may be modelled by means of a straightforward theoretical approach based on the identification of various strength components due to cohesion, pure friction and dilatancy. It was found that the latest version of the testing apparatus may be conveniently used to evaluate temperature-related effects. This was done in a research project in which test conditions were obtained by combining test temperatures and normal stress levels comprised within wide variation ranges.
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