caa a22 4500 463232097 CHVBK 20180405153245.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10853-006-0316-0 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0316-0 Influence of de-icing agents on the viscoelastic properties of asphalt mastics [Elektronische Daten] [P. Starck, B. Löfgren] A study using dynamic mechanical analysis (DMA) and stress rheometry was done on the viscoelastic properties of different bitumen-filler blends disposed to de-icing agents. The blends were mixtures of the same bitumen, B200 (B), and four different filler grades, limestone (L) filler, Oulu (O) stone (mica-gneiss with high biotite amount), Rovaniemi (R) stone (diabase) and Hietavaara (H) stone (diabase). The de-icing agents tested were water, formic acid, potassium acetate (KAc) and potassium formate (KFo). From the DMA measurements, the elastic modulus (stiffness) at −25°C, the glass transition temperature (T g) of the bitumen phase, and the softening temperature were measured. The stiffness data at −25°C proposed that all agents seem to decrease the stiffness levels of the B-O blend with biotite to a larger extent. Formic acid and 50% potassium formates significantly decreased the stiffness level of the B-L blend. The stiffness of B-H blends was not affected by the chemical treatment. A plasticizing effect of water, formic acid, and 5% potassium acetate, was found for the B-L blend. From the changes in the softening temperatures in the temperature range 15-28°C, it was concluded that chemical treatment may have an increasing effect on the softening temperatures of all blends, although the effect of hardening could not be omitted. Oscillatory flow measurements with a shear stress rheometer demonstrated that the viscosities of the blends increased significantly after the immersion in de-icing agents. Springer Science+Business Media, LLC, 2006 Starck P. Polymer Science Centre, Helsinki University of Technology, Box 3500, 02015 TKK, Espoo, Finland aut Löfgren B. Polymer Science Centre, Helsinki University of Technology, Box 3500, 02015 TKK, Espoo, Finland aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/2(2007-01-01), 676-685 0022-2461 42:2<676 2007 42 10853 https://doi.org/10.1007/s10853-006-0316-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0316-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Starck P. Polymer Science Centre, Helsinki University of Technology, Box 3500, 02015 TKK, Espoo, Finland aut NATIONALLICENCE 700 1- Löfgren B. Polymer Science Centre, Helsinki University of Technology, Box 3500, 02015 TKK, Espoo, Finland aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/2(2007-01-01), 676-685 0022-2461 42:2<676 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer