Investigation of the Use of Polymers to Enhance the Performance of Recycled Asphalt Pavement (RAP)

There is an increasing demand in road rehabilitation and maintenance in California. Asphalt covers 93% of roads and parking lots. Scarcity of the materials made it essential to seek more economical, sustainable, and yet durable alternatives to construct asphalt concrete pavement. According to CalRecycle the use of recycled asphalt pavement (RAP) can reduce cost for local governments and other users, save energy when done on site, reuse diminishing resources of aggregate and petroleum products, and reduce disposed material. In addition, the use of RAP in the construction of asphalt pavement may reduce the greenhouse gas emissions. However, the incorporation of RAP has been limited up to 20% in California since road owners fear that the use of aged asphalt binder may hinder the durability of asphalt concrete. Recent advancement in polymers can help to make it possible to incorporate higher percentages of RAP. The research will identify polymers and investigate its effect on the performance of asphalt concrete with RAP.

Principal Investigator: 

Shadi Saadeh

PI Contact Information:
California State University, Long Beach

Project Number: