RT Journal Article
T1 Bitumen modifiers for reduced temperature asphalts: a comparative analysis between three polymeric and non-polymeric additives
A1 Cuadri Vega, Antonio Abad
A1 Carrera Páez, Virginia
A1 Izquierdo Rodríguez, María Ángeles
A1 García Morales, Moisés
A1 Navarro Domínguez, Francisco Javier
AB This study presents three bitumen modifiers which may find successful application in the fabrication of binders for warm mix asphalt in the paving industry. In that sense, two non-polymeric additives, thiourea and thiourea dioxide, along with a reactive isocyanate-terminated prepolymer have been evaluated. Viscous flow and linear viscoelasticity tests, at 60 ºC, reveal bituminous modified binders which evolve towards highly viscous materials when subjected to ambient curing. However, at 135 ºC, they show lower viscosity than a typical 3 wt.% SBS binder used as reference. These results suggest modified binders with low viscosity which may contribute to reduce the mix asphalt temperature. On the contrary, they are expected to undergo an important increase in viscosity when the asphalt is in service, which would contribute to improve further their performance. Low temperature performance and effects of short-term and long-term aging were not considered in this study.
PB Elsevier
SN 0950-0618
SN 1879-0526 (electrónico)
YR 2014
FD 2014
LK http://hdl.handle.net/10272/12107
UL http://hdl.handle.net/10272/12107
LA eng
NO Cuadri Vega, A.A., Carrera Páez, V., Izquierdo Rodríguez, M.A., García Morales, M., Navarro Domínguez, F.J.: "Bitumen modifiers for reduced temperature asphalts: a comparative analysis between three polymeric and non-polymeric additives" Construction and Building Materials. Vol. 51, págs. 82-88, (2014). DOI: 10.1016/j.conbuildmat.2013.11.009
NO This work is part of a research project sponsored by a MEC-FEDER Programme of references BES-2008-003572 and AP2008-01419, supported by European Social Fund. The authors gratefully acknowledge its financial support.
DS Repositorio Institucional de la Universidad de Huelva
RD 14 jul 2026