Using waste polymers as a reliable alternative for asphalt binder modification – Performance and morphological assessment
作者： Liliana MB Costa , Hugo MRD Silva , Joana Peralta , Joel RM Oliveira , None
DOI: 10.1016/J.CONBUILDMAT.2018.11.279
关键词:
摘要: Abstract The use of plastic wastes as an alternative to virgin polymers can be a remarkable environmentally friendly idea for road paving construction or rehabilitation. Therefore, this study aimed at assessing the potential benefits modifying conventional 35/50 penetration grade bitumen, with uncontaminated waste (ethylene vinyl acetate and high-density polyethylene) carefully selected from recycling plants. A polymer (styrene-butadienestyrene) was also used reference material since it is most commonly bitumen modification. performance (physical, storage stability, rheological properties) morphologic characteristics different modified binders were thoroughly evaluated compared those binder. It concluded that recycled EVA SBS could perform similarly, namely regarding their viscosity properties. Furthermore, binder presented slightly better stability probably due its homogeneous dispersion. HDPE reveals some promising physical properties (associated rutting resistance), but presents worst resilience creep recovery. outcome work development new asphalt reliable alternatives activities excellent performance, comparable obtained polymer.
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