This study is aimed towards an advanced characterization of the
material behavior of hot mix asphalt (HMA) under cyclic compressive
loading. The triaxial cyclic compression test (TCCT), which today
is mainly employed according to EN 12697-25 for the assessment of
the resistance to permanent deformation, is thoroughly reviewed.
The four main areas of research are (a) to introduce an alternative
assessment method for the characterization of the resistance to
permanent deformation, (b) to study the viscoelastic behavior in
axial and radial direction and analyze the dynamic Poisson's Ratio
and the dynamic shear modulus, (c) to develop an analytical model
which predicts the viscoelastic material behavior of HMA from
viscoelastic binder characteristics and volumetric characteristics
of the mix and (d) to introduce an advanced TCCT with cyclic
instead of static confining pressure which takes into account the
viscoelastic material reaction of HMA and thus simulates the state
of stress which occurs in a road pavement in a more realistic way.
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