caa a22 4500 463221389 CHVBK 20180405153213.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10853-006-1047-y doi (NATIONALLICENCE)springer-10.1007/s10853-006-1047-y Rheological characterisation of bitumen diffusion [Elektronische Daten] [Robert Karlsson, Ulf Isacsson, Jonas Ekblad] Diffusion is considered important in the process of mixing old and new binders during asphalt recycling. The degree of mixing is presumed to greatly influence the final properties of recycled asphalt concrete. Previously, studies have been undertaken to investigate diffusion using FTIR-ATR (Fourier Transform Infrared Spectroscopy using Attenuated Total Reflectance). A need was identified to verify, if the rates of diffusion detected using FTIR-ATR were accompanied by changes in rheological properties. In this paper, a dynamic shear rheometer (DSR) with parallel plates is used for monitoring diffusion. Diffusion coefficients obtained at 60, 80 and 100°C from tests of a soft bitumen (rejuvenator) diffusing into a stiff one are presented. The diffusion coefficients determined are compared with the corresponding diffusion coefficients obtained using FTIR-ATR. The comparison shows that the rates of diffusion detected by the DSR are of the same magnitude, but somewhat higher than the ones detected by FTIR-ATR. Springer Science+Business Media, LLC, 2006 Karlsson Robert Division of Highway Engineering, Royal Institute of Technology, SE-100 44, Stockholm, Sweden aut Isacsson Ulf Division of Highway Engineering, Royal Institute of Technology, SE-100 44, Stockholm, Sweden aut Ekblad Jonas Division of Highway Engineering, Royal Institute of Technology, SE-100 44, Stockholm, Sweden aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/1(2007-01-01), 101-108 0022-2461 42:1<101 2007 42 10853 https://doi.org/10.1007/s10853-006-1047-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1047-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Karlsson Robert Division of Highway Engineering, Royal Institute of Technology, SE-100 44, Stockholm, Sweden aut NATIONALLICENCE 700 1- Isacsson Ulf Division of Highway Engineering, Royal Institute of Technology, SE-100 44, Stockholm, Sweden aut NATIONALLICENCE 700 1- Ekblad Jonas Division of Highway Engineering, Royal Institute of Technology, SE-100 44, Stockholm, Sweden aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/1(2007-01-01), 101-108 0022-2461 42:1<101 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer