Fundamental Researches on Rheological Properties of Mastic Asphalt

Abstract

The mechanical and rheological properties of matrix (filler-bitumen mixture) and mastic asphalt were investigated by various tests including the Wheel tracking test and a Simple shear test. There exist considerable differences between so-called no-void bituminous mixtures such as mastic asphalt and conventional bituminous paving mixtures. Generally a stability of the bituminous paving mixtures depends on a interlocking of the aggregate, while the stability of no-void mixtures depends mainly on binder or matrix viscosity. As a factor which controls the rheological properties of matrix and mastic asphalt, the amount of excess matrix and of excess bitumen were considered by the authors.
The relationships between rheological properties and these excess amount of bitumen and of matrix were investigated.