Health & Environmental Research Online (HERO)


Print Feedback Export to File
5699058 
Journal Article 
Polymer modified asphalt 
Becker, Y; Mendez, MP; Rodriguez, Y 
2001 
1 
Vision Tecnologica
ISSN: 1315-0855 
9 
1 
39-50 
English 
WOS:000172918900006 
Considering the international position of Venezuelan oil industry as one of the leaders of the current world asphalt production, it is important to be aware of the source of opportunities that polymer modified asphalt (PMA) offers in today's market. Based on that, this paper presents an overview of the characteristics of polymer-asphalt binders, mostly used in the paving industry. Emphasis is being made on the relationships of composition and formulation with the properties of the binder, and the relationships of the binder properties and performance of the mixture. Although polymer modification seems to be the best solution to improve asphalt properties, these systems present three main problems: a) poor asphalt polymer compatibility (which influences the stability of the system), b) higher viscosities during asphalt processing and application, and c) higher cost. These issues are also covered in the present study, altogether with some field experiences. A summary of advantages and disadvantages of most used polymers to modify asphalt binders (styrene-butadiene-styrene (SBS), reclaimed tire rubber, polyethylene (PE), and atactic polypropylene (aPP)) is also provided.