Asphalt Rubber Technology Information Center
Using Pyrolyzed Carbon Black (PCB) from Waste Tires in Asphalt Pavements (Part II: Asphalt Binder
and Test Road) - Final Report
Zeng, Yongdong & Lovell, C.W., Purdue University  
February, 1996  
Key Words:
Scrap tires, pyrolysis of scrap rubber, carbon black, asphaltic binder  
Scrap tires derived from automobiles have become a large environmental problem in the United States.  In this study,
research is carried out to investigate the potential use of tire-derived pyrolyzed carbon black from scrap tires as an
asphalt cement modifier.  The asphalt cements used in this research were AC10 & AC20.  Penetration and softening point
tests were performed to obtain the consistency of the asphalt cements.  The pyrolyzed carbon black, as provided by
Wolf Industries, was combined with the asphalt cement in the following percentages: 5%, 10%, 15% & 20%.  Penetration
softening point and ductility tests were performed to determine the temperature susceptibility of the modified binder as
altered by the pyrolyzed carbon black.
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