A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rheological Studies of Asphalt with Ground Tire Rubber
Laboratory studies about the interaction of asphalt cement with three different ground tire rubber (GTR) samples from different gradations were made using rheological and aging tests, and also chemical characterization tests. Rubber particle size, curing time, temperature and mixing rate were found to be important factors that affect the rubber depolymerization rate. It is possible to obtain homogeneous asphalt-rubber binders with non-detrimental viscosity at hot-mix temperatures, while still being elastic at rutting temperatures and less stiff at colder temperatures than base asphalt.
The higher the rubber content in asphalt rubber, the better the cold stiffness properties and fatigue resistance, the lower the aging index. The proper combination of curing variables and asphalt composition is essential to assure good rheological properties. The high molecular size, the high asphaltenes content and high acidity in the asphalt cements resulted in blends more easily compatible and with good rheological properties.
Rheological Studies of Asphalt with Ground Tire Rubber
Laboratory studies about the interaction of asphalt cement with three different ground tire rubber (GTR) samples from different gradations were made using rheological and aging tests, and also chemical characterization tests. Rubber particle size, curing time, temperature and mixing rate were found to be important factors that affect the rubber depolymerization rate. It is possible to obtain homogeneous asphalt-rubber binders with non-detrimental viscosity at hot-mix temperatures, while still being elastic at rutting temperatures and less stiff at colder temperatures than base asphalt.
The higher the rubber content in asphalt rubber, the better the cold stiffness properties and fatigue resistance, the lower the aging index. The proper combination of curing variables and asphalt composition is essential to assure good rheological properties. The high molecular size, the high asphaltenes content and high acidity in the asphalt cements resulted in blends more easily compatible and with good rheological properties.
Rheological Studies of Asphalt with Ground Tire Rubber
Leite, Leni Figueiredo Mathias (author) / Constantino, Rômulo Santos (author) / Vivoni, Alexander (author)
Road Materials and Pavement Design ; 2 ; 125-139
2001-01-01
15 pages
Article (Journal)
Electronic Resource
Unknown
GTR , SBS , tire , polymer modified asphalt
Rheological Characteristics of Tire Rubber-Modified Asphalt following Thermal Variation
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