ArticlePolymers2025
Technology and Rheological Properties of Warm Asphalt Rubber Based on an Ultra-Warm Mix Additive (UWM)-Sasobit Composite System.
Article in Polymers, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Impact of Regulation of Wax-Based and Bio-Oil-Based Warm-Mix Additives on the Phase Behavior and Rheological Properties of Rubber-Modified Asphalt.Materials (Basel, Switzerland) · 2026Article
- Performance Evaluation of Warm-Mix Agents on Crumb Rubber-Modified Asphalt.Materials (Basel, Switzerland) · 2026Article
- Stone Matrix Asphalt with Fischer-Tropsch Wax and Recycled Rubber: A Multi-Scale Evaluation of Mechanical and Functional Performance.Materials (Basel, Switzerland) · 2026Article
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6 authors.
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Abstract
To address the challenges of decarbonization in the global transportation sector and disposal of waste tires, warm asphalt rubber (WAR) with low viscosity and high performance was prepared. In particular, the preparation and rheological behavior of WAR incorporating composite warm mix systems at relatively high crumb rubber contents have not been thoroughly documented. In this study, WAR prepared under such conditions was systematically examined. A five-factor, three-level segmented orthogonal experimental design (OED) was employed to investigate the effects of preparation parameters on hot mix asphalt rubber (AR) properties. Based on the optimized AR formulation, a composite warm mix system combining Ultra-Warm Mix additive (UWM) and Sasobit was developed, and control groups containing 5% UWM only and 1.5% Sasobit only were prepared for comparison. Conventional physical tests together with rheological characterization, including Dynamic Shear Rheometer (DSR), Multiple Stress Creep Recovery (MSCR), and Bending Beam Rheometer (BBR) tests, were conducted to evaluate the high- and low-temperature performance of WAR. Results show that the optimal preparation process consisted of aromatic oil content 5%, crumb rubber content 30%, shear temperature 220 °C, shear time 120 min, and reaction time 90 min. The composite warm mix system notably enhanced WAR performance, with the WAR-5U1.5S group exhibiting the most balanced properties. A marked reduction in rotational viscosity was achieved while maintaining a stable softening point, and satisfactory ductility and elastic recovery were also retained. DSR and MSCR tests confirmed improved high-temperature deformation resistance, an increase in percent recovery R, and a decrease in non-recoverable creep compliance J
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