RT Journal Article
T1 Influence of polymer melting point and melt flow index on the performance of ethylene-vinyl-acetate modified bitumen for reduced-temperature application
A1 Yuliestyan, Avido
A1 Cuadri Vega, Antonio Abad
A1 García Morales, Moisés
A1 Partal López, Pedro
AB The paving industry is currently demanding polymer modified bitumens (PMBs) with enhanced in-service performance and low enough viscosity at lower application temperatures. With this aim, this study focuses on the use of ethylene vinyl acetate (EVA) copolymers with low melting temperatures and explores the effect on the desired properties of the vinyl acetate (VA) content and Melt Flow Index (MFI). To that end, binders were prepared from EVA copolymers having varying VA contents from 7 to 33 wt.%, and MFI from 2 to 800. A comprehensive characterization based on viscous flow curves, dynamic shear temperature sweeps, standardized technological tests, differential scanning calorimetry (DSC) and optical microscopy analysis was conducted on EVA-binders with 5 and 7.5 wt.% EVA. Low VA contents proved to endow bitumen with improved performance at medium-high in-service temperatures. Interestingly, binder viscosity at 135ºC decreased with increasing the MFI, regardless the selected VA content. This means that tailored PMBs can be designed with both improved in-service performance at medium-high temperatures and reduced viscosity to facilitate polymer-bitumen mixing, mineral coating and asphalt mix laydown/compaction at lower temperatures.
PB Elsevier
SN 0264-1275
SN 0264-1275 (electrónico)
YR 2016
FD 2016
LK http://hdl.handle.net/10272/12101
UL http://hdl.handle.net/10272/12101
LA eng
NO Yuliestyan, A., Cuadri Vega, A.A, García Morales, M., Partal López, P.: "Influence of polymer melting point and melt flow index on the performance of ethylene-vinyl-acetate modified bitumen for reduced-temperature application". Materials and Design. Vol. 96, págs. 180–188. (2016). DOI: 10.1016/j.matdes.2016.02.003
NO This research is a part of the Marie Curie Initial Training Network (ITN) action, FP7 -PEOPLE-2013-ITN. This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grantagreement number 607524.
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026