Analysis of design variables of highly modified asphalt binders for longer-lasting roads
Source abstract
Abstract
Highly modified asphalt binders (HiMAs) enhance pavement durability, though their polymer and additive content raises environmental concerns. To optimise durable asphalt layers, 12 HiMAs, varying in composition and processing, were evaluated using penetration (EN 1426), softening point (EN 1427), storage stability (EN 13399), and Multiple Stress Creep and Recovery (MSCR, EN 16659) tests, including the ElaStiLe protocol. Results indicate that compositional variations minimally affect penetration and softening point, but significantly influence stability, workability, and rheological behaviour. Thus, HiMAs produced with 8.0% high-vinyl SBS polymer, 0.5% polyphosphoric acid (PPA), and 0.1% sulphur, subjected to an extended 240-minute digestion, performed better than conventional polymer-modified binders.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Infrastructure Maintenance and Monitoring · Transport Systems and Technology
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratory of Construction Engineering of the University of Granada (LabIC.UGR)
References (34)
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