RT Journal Article
T1 End-performance evaluation of thiourea-modified bituminous binders through viscous flow and linear viscoelasticy testing
A1 Cuadri Vega, Antonio Abad
A1 García Morales, Moisés
A1 Navarro Domínguez, Francisco Javier
A1 Airey, Gordon
A1 Partal López, Pedro
AB Straight-run bitumens are no longer suitable in new asphalt mixtures. Consequently, the use of modified bitumens has become more important. In order to both improve binders mechanical properties and prevent it from phase separation whilst stored at high temperature, the paving industry is currently developing new modification routes based on reactive agents. This work studies the use of thiourea, which has proven to efficiently broaden the temperature interval over which the binder demonstrates an adequate performance. On the one hand, viscous flow and dynamic shear tests indicate an enhancement in the high in-service temperature strength, along with a reduced thermal susceptibility. On the other hand, results of dynamic flexural tests reveal a significant decrease in the binder glass transition temperature. Finally, the use of master curves and a further frequency/temperature conversion are proposed, in order to attain a suitable viscoelastic characterisation of bituminous binders at low temperatures.
PB Spinger Verlag
SN 0035-4511
SN 1435-1528 (electrónico)
YR 2013
FD 2013
LK http://hdl.handle.net/10272/12113
UL http://hdl.handle.net/10272/12113
LA eng
NO Cuadri Vega, A.A., García Morales, M., Navarro Domínguez, F.J., Airey, G.D., Partal López, P.: "End-performance evaluation of thiourea-modified bituminous binders through viscous flow and linear viscoelasticy testing". Rheologica Acta. Vol. 52, n. 2, págs. 145-154, (2013). DOI: 10.1007/s00397-012-0671-5
NO This work is part of a research project sponsored by Junta de Andalucia-CEIC (TEP6689) and also by "Ministerio de Educacion" through its Research Mobility Programme (Partal's grant Ref. PR2010-0593) and through the Cuadri's F.P.U. research grant (AP2008-01419). Authors gratefully acknowledge their finncial support.This work is part of a research project sponsored by Junta de Andalucia-CEIC (TEP6689) and also by “Ministerio de Educacion” through its Research Mobility Programme (Partal’s grant Ref. PR2010-0593) and through the Cuadri’s F.P.U. research grant (AP2008-01419). Authors gratefully acknowledge their financial support.
DS Repositorio Institucional de la Universidad de Huelva
RD 15 jun 2026