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Título
Study of the permanent deformation of binders and asphalt mixtures using rheological models of fractional viscoelasticity
Autor(es)
Materia
Permanent deformation
Rheological properties
MSCR
Viscoelastic
Creep-recovery
Asphalt binder
Clasificación UNESCO
3305.29 Construcción de Carreteras
3321.01 Materiales Asfálticos
Fecha de publicación
2020-11-10
Citación
Lagos-Varas, M., Raposeiras, A. C., Movilla-Quesada, D., Arenas, J. P., Castro-Fresno, D., Muñoz-Cáceres, O., & Andres-Valeri, V. C. (2020). Study of the permanent deformation of binders and asphalt mixtures using rheological models of fractional viscoelasticity. Construction and Building Materials, 260, 120438. doi:10.1016/j.conbuildmat.2020.120438
Resumen
[EN] The accumulation of load on asphalt pavement as a result of increased vehicle traffic generates problems
in the asphalt layer due to permanent deformation. For correct design, it is essential to carry out a rheological
characterization of the aggregate-binder materials that make up the asphalt mix. This article
shows the analysis of permanent deformation based on the rheological behavior of asphalt mixtures
and binders. Experimental tests based on creep and recovery phenomena allow the study of permanent
deformations using theoretical models of fractional viscoelasticity. The rheological characterization
allows us to detail the elasticity of the aggregate, n2, and the elastic-viscous properties of the different
binders used, n1 and g. The results obtained show that it is possible to predict the deformations of the
recovery phenomenon in asphalt mixtures from the rheological values (aggregate-binder) obtained in
the creep process. Besides, the properties of the asphalt binder (n1 and g) correlate with the recovery phenomenon
of the MSCR test for conventional and modified materials. The methodology proposed allows a
better understanding of the states of permanent deformation to improve the design of binders and
asphalt mixtures.
Descripción
Fuente: Construction and Building Materials
URI
ISSN
0950-0618
DOI
10.1016/j.conbuildmat.2020.120438
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