Determination of the relation between the content of used reclaimed asphalt material and deformation characteristics of asphalt concretes

摘要

The objective of this paper is to summarize experimental findings of functionalities betweenrnthe content of added reclaimed asphalt material (RAP) in asphalt mixtures of the AC (asphalt concrete) andrnHMAC (high modulus asphalt concrete) type, selected suitable bituminous binders (including the applicabilityrnof chemical additives) and performance characteristics describing the behavior of asphalt mixes in the range ofrnhigh and low temperatures. The results of dynamic non-destructive stiffness measured in a temperature intervalrnof 0–30℃, creep behavior at 40℃ with the assessment of resistance to permanent deformation as well as thernregular rutting test are presented here. Further, master curves for the complex dynamic modulus of the asphaltrnmixtures are determined and assessed. Finally, recommendations about acceptable contents of reclaimed asphaltrnmaterial securing the minimum technical requirements of technical standards and sufficient asphalt mixturerndurability are formulated. The influence of combined use of reclaimed material and selected bituminous bindersrnis described as well.