Using Pyrolized Carbon Black (CBp) from Waste Tires in Asphalt Pavements (Part I: Limestone Aggregate) - Final Report Author(s): Park, Taesoon & Lovell, C.W., Purdue University Origin: Indiana Date: February, 1996 Categories: Performance, Environmental Key Words: Pyrolized carbon black, carbon black, additives, hot mix asphalt, asphalt concrete, rutting, stripping, resilient modulus, cracking Summary: 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.