Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Improvement in rheological properties of polymer-modified asphalt binder through sulfur addition using traditional and advanced analyses
The use of crosslinking agents, particularly sulfur, addresses compatibility issues in Polymer-modified binders (PmB), impacting storage stability and rheological properties. Through comprehensive rheological assessments, including Superpave grading and advanced techniques such as Glover-Rowe, master curves, Arrhenius and Power-law models, this study aimed to provide a deeper understanding of the role of sulfur as a crosslinking agent between asphalt and styrene-butadiene copolymer (SB), investigating its influence on the durability and performance of the asphalt binder. Results show sulfur levels up to 0.3%, enhanced PmB's elasticity, resistance to shear deformation, rutting, low-temperature cracking, and fatigue, making it suitable for a wider range of climatic conditions and heavier traffic levels. Beyond this threshold, the binder became very stiff and less workable, suggesting the potential onset of gelation. An optimal sulfur content in PmB enhanced compatibility, rheological properties, and overall efficiency of binder modification, potentially reducing polymer modification costs.
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Improvement in rheological properties of polymer-modified asphalt binder through sulfur addition using traditional and advanced analyses
The use of crosslinking agents, particularly sulfur, addresses compatibility issues in Polymer-modified binders (PmB), impacting storage stability and rheological properties. Through comprehensive rheological assessments, including Superpave grading and advanced techniques such as Glover-Rowe, master curves, Arrhenius and Power-law models, this study aimed to provide a deeper understanding of the role of sulfur as a crosslinking agent between asphalt and styrene-butadiene copolymer (SB), investigating its influence on the durability and performance of the asphalt binder. Results show sulfur levels up to 0.3%, enhanced PmB's elasticity, resistance to shear deformation, rutting, low-temperature cracking, and fatigue, making it suitable for a wider range of climatic conditions and heavier traffic levels. Beyond this threshold, the binder became very stiff and less workable, suggesting the potential onset of gelation. An optimal sulfur content in PmB enhanced compatibility, rheological properties, and overall efficiency of binder modification, potentially reducing polymer modification costs.
<title>GRAPHICAL ABSTRACT</title> <fig><alternatives><graphic></graphic> <graphic></graphic></alternatives></fig>
Improvement in rheological properties of polymer-modified asphalt binder through sulfur addition using traditional and advanced analyses
Rodrigues, Ana Luiza Rezende (Autor:in) / Falcão, Caio Cajazeiras (Autor:in) / Williams, R. Christopher (Autor:in) / Barroso, Suelly Helena de Araújo (Autor:in)
Road Materials and Pavement Design ; 26 ; 52-64
02.01.2025
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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