ArticleMaterials (Basel, Switzerland)2022
Swelled Mechanism of Crumb Rubber and Technical Properties of Crumb Rubber Modified Bitumen.
Article in Materials (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 23 citations in OpenAlex.
- Research on Properties and Microstructure of Waste Polyurethane/Crumb Rubber Composite Modified Asphalt.Materials (Basel, Switzerland) · 2026Article
- Design, Performance and Mechanisms of Asphalt Modified with Polyurethane and Hydroxylated Crumb Rubber.Materials (Basel, Switzerland) · 2026Article
- Study on the crack resistance of USP warm-mix rubber asphalt and its mixtures.Scientific reports · 2025Article
- Research on Mixing Uniformity Evaluation and Molding Method for Crumb Rubber Asphalt Mixtures.Materials (Basel, Switzerland) · 2025Article
- Hybrid Devulcanized/Vulcanized Crumb Rubber Strategy for High-Performance Asphalt with over 40% Recycled Tire Rubber Content.Polymers · 2025Article
- Rheological Properties and Influence Mechanisms of Twin-Screw Activated Rubber Powder Composite SBS-Modified Asphalt.Materials (Basel, Switzerland) · 2025Article
- Advances in Regenerated Asphalt Mixtures.Materials (Basel, Switzerland) · 2023Article
- Rheological Modeling of Bituminous Mixtures Including Polymer-Modified Binder and Fine Crumb Rubber Added through Dry Process.Materials (Basel, Switzerland) · 2022Article
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
Abstract
Crumb rubber modified bitumen (CRMB) has excellent high-temperature performance and fatigue resistance, and is widely used in asphalt pavement to cope with increasing traffic axle load and changing climate. Under conventional preparation conditions, the swelling degree of CR can directly impact the comprehensive properties of CRMB; however, physical and chemical properties research on swelling crumb rubber (SCR) and crumb rubber recycled bitumen (CRRB) in CRMB is relatively lacking. In this paper, the working performance of CRMB and CRRB in high-temperature and low-temperature conditions were studied through physical and working performance testing of bitumen. The CR and SCR were tested by scanning electron microscope (SEM), Fourier transform infrared spectrometer (FTIR), gel permeation chromatography (GPC), and particle size distribution (PSD) tests to study the physicochemical behavior and microscopic effects before and after CR swelling. The results showed that CR dosage was in the range of 10%, 15%, and 20%, as well as that CR dosages have a positive effect on the high- and low-temperature performance, storage stability, and elastic recovery of bitumen. The high-temperature PG grades of bitumen were directly improved by four grades, and the elastic recovery rate increased by 339.9%. CR improved the ultra-low temperature crack resistance of bitumen. Due to the absorption of lighter components by CR, the relative content of the heavy component of bitumen increased; however, its low-temperature performance decreased significantly. After swelling, the CR particle size increased and the range became wider, the surface complexity of CR became higher, and the specific surface area was larger. At the same time, CR carried out the transformation process from large and medium molecules to small molecules. During the swelling process, a new benzene ring structure appeared in the CR, and the C-C bond and C-S bond of CR broke, forming part of the C=C bond.
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