Description
This paper describes an investigation into applying Binary Modification of refining processes in conjunction with crumb rubber to improve damage resistance and performance characteristics of asphalt. The study was performed to compare the effectiveness of combining a specific oxidization technique with crumb rubber to enhance performance properties and reduce material cost. The specific oxidation technique, used to adjust molecular structure of asphalt,
allows reducing the concentration of rubber required, yet achieving properties comparable to other modifications such as polymer and conventional rubber methods. The testing included rheological and damage resistance testing and overall characteristics comparable to polymer modified and rubberized asphalts. The results indicate the approach results in improving properties to the levels that are similar or exceed the improvements achieved by conventional rubber process and allows optimization of the rubber and oxidation processes to achieve
required goals. The processes are expected to meet demands for a wide range of asphalt properties suitable for different climate and traffic conditions.
