@article{10272/18270,
year = {2019},
month = {11},
url = {http://hdl.handle.net/10272/18270},
abstract = {Hybrid modification is a relatively new concept of incorporating two or more polymeric
modifiers of different nature to a bitumen, in order to take advantage of their complementary features.
Aiming to this, in this paper, the so-called Hybrid Systems (HSs) were prepared by the addition of
an ethylene-based copolymer (reactive or non-reactive) to a model rubberised binder (Crumb Tyre
Rubber Modified Bitumen). The resulting binders (referred to as reactive and non-reactivate HSs,
depending on copolymer used) were evaluated by means of thermorheological analysis, technological
characterisation, fluorescence microscopy and modulated differential scanning calorimetry. From the
experimental results, it may be deduced a positive synergistic effect of non-dissolved Crumb
Tyre Rubber (CTR) particles and a second polymeric phase that not only improves the in-service
performance but also the high-temperature storage stability. This enhancement is attributed to the
development of a multiphasic system composed of non-dissolved CTR particles, a polymer-rich phase
and an asphaltene-rich phase. In the case of non-reactive HSs, droplets of swollen ethylene copolymer
form a well-defined dispersed phase. By contrast, reactive HSs display a different morphology, almost
invisible by optical microscopy, related to the development of a chemical network that yields, by far,
the highest degree of modification.},
publisher = {MDPI},
title = {Hybrid Rubberised Bitumen from Reactive and Non-Reactive Ethylene Copolymers},
doi = {10.3390/polym11121974},
author = {Senise, Simona and Carrera Páez, Virginia and Cuadri Vega, Antonio Abad and Navarro Domínguez, Francisco Javier and Partal López, Pedro},
}