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Rudolf Hampl, Otakar Vacin, Martin Jasso, Jiri Stastna, Ludo Zanzotto
Modeling of tensile creep and recovery of polymer modified asphalt binders at low temperatures

Appl. Rheol. 25:3 (2015) 34675 (8 pages)

The creep and recovery of asphalt modified with Elvaloy 4170 and polyphosphoric acid were studied at low temperatures, by inductive phenomenological methods. Two models of the tensile compliance function were investigated. Both models were derived from the linear viscoelastic retardation spectra and successfully used for the description of the creep and recovery tests in the studied asphalt binders. Large effects due to oxidative aging in a rolling thin film oven were found from the recovered compliance function recorded in a bending beam rheometer at a temperature of - 20 C. The studied compliance function models worked well at higher and lower temperatures in creep and recovery experiments on conventional and modified asphalt binders for both shear and tensile creep.

Cite this publication as follows:
Hampl R, Vacin O, Jasso M, Stastna J, Zanzotto L: Modeling of tensile creep and recovery of polymer modified asphalt binders at low temperatures, Appl. Rheol. 25 (2015) 34675.

Giovanni Polacco, Otakar Josef Vacin, Dario Biondi, Jiri Stastna, Ludovit Zanzotto
Dynamic Master Curves of Polymer Modified Asphalt from Three Different Geometries

Appl. Rheol. 13:3 (2003) 118-124

Polymer modified asphalt is an highly temperature sensitive material. To obtain the master curves of dynamic material functions, for this material, it is necessary to perform the testing over the temperature interval from - 30.C to at least 90.C. Since in this temperature range the polymer modified asphalt undergoes the transition from a glass-like to a Newtonian-like material, the benefit of using three testing geometries is studied here. The geometries used were: torsion bar (for the low temperatures), plate-plate (for the mid range temperatures) and bob and cup (for the high temperatures). The advantage of the combination of these three geometries is discussed. Stress and strain controlled rheometers were used to conduct all dynamic experiments. Master curves obtained by these geometries cover up to 20 decades of the reduced frequency.

Cite this publication as follows:
Polacco G, Vacin OJ, Biondi D, Stastna J, Zanzotto L: Dynamic Master Curves of Polymer Modified Asphalt from Three Different Geometries, Appl. Rheol. 13 (2003) 118.

L. Zanzotto, J. Stastna, O.J. Vacin
Thermomechanical properties of several polymer modified asphalts

Appl. Rheol. 10:4 (2000) 185-191

Cite this publication as follows:
Zanzotto L, Stastna J, Vacin OJ: Thermomechanical properties of several polymer modified asphalts, Appl. Rheol. 10 (2000) 185.


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