ABSTRACT
ABSTRACT: Bond between pavement layers (specifically asphalt layers) became one of the most important issues last years. Pursuing the rutting resistant asphalt pavements leads to asphalt mixtures of lower binder content, and thus asphalt layers of lower “semi-binding” potential. Such asphalt layers do not provide proper bond between pavement layers after compaction. It results in ineffective stresses and strains transfer from upper to lower layer under the traffic loads. In such working conditions, pavement does not work as monolithic structure and exhibits much shorter fatigue life. Use of non-destructive FWD method for assessment of pavement interlayer bond is very interesting and useful. Paper will present the basic conditions of testing using FWD for evaluation of interlayer bond and testing results of asphalt road pavements for various traffic categories and of various pavement structure thickness as well as material properties.
