Asphalt Rubber Technology Information Center
Using Pyrolized Carbon Black (CBp) from Waste Tires in Asphalt Pavements (Part I: Limestone
Aggregate) - Final Report
Park, Taesoon & Lovell, C.W., Purdue University  
February, 1996  
Performance, Environmental  
Key Words:
Pyrolized carbon black, carbon black, additives, hot mix asphalt, asphalt concrete, rutting, stripping, resilient modulus,
This study presents the viability of using PCB as an additive in hot mix asphalt concrete.  Different ratios of PCB (5%,
10%, 15%, 20% by weight of asphalt) were blended with two grades of asphalt (AC-10 & AC-20).  The complete behaviors
of the PCB modified asphalt concrete were investigated by comprehensive laboratory testing and evaluation.  The
Marshall method was used to determine the optimum binder content, and the mechanical properties and void
relationships were investigated by this method.  The Gyratory Testing Machine was used to define the stress-strain
relationships of the PCB mixtures.   The rutting potential of PCB mixtures was investigated using the Dynamic Creep
Testing.  The performance of the PCB mixtures at low temperature (5 C) was determined by the Indirect Tensile
Testing.   The findings of this study show beneficial effects of added PCB for asphalt mixtures.
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