Quantitative Analysis of Functional Polymer in Recycled Tire Rubber Used in Modified Asphalt Binders

Since the 1960s, ground tire rubber (GTR) has been used to modify asphalt binders used in hot-mix asphalt, and the physical characteristics of GTR are critical to final asphalt pavement performance. This study seeks to identify methods for better understanding and quantification of functional polymer content in GTR as well as the general chemical characteristics of GTR used to modify asphalt binders. Specifically, the authors evaluate the merits of the thermogravimetric analysis (TGA) method to quantify GTR's functional polymer content and general chemical characteristics. They conclude that TGA analysis effectively determines total functional polymer available in GTR as an asphalt binder modifier and measures the chemical make-up of the available polymer in terms of natural rubber and styrene-butadiene rubber.


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  • Accession Number: 01636658
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 30 2017 8:23AM