Project 2.01: Asphalt Mixtures with Crumb Rubber Modifier for Longevity and Environment

Asphalt Mixtures with Crumb Rubber Modifier for Longevity and Environment

Project 2.1

Project Summary

The main research plan is to study new materials that will make some positive changes in the durability and longevity of the life of transportation infrastructure, e.g., new asphalt mixtures with Crumb Rubber Modifier (CRM). CRM is recycled rubber produced from waste scrap tires, and when it is incorporated into paving asphalt mixtures, CRM provides many positive improvements in deformation resistance, fatigue resistance and noise reduction encouraged by successful laboratory study results, CRM became one of the popular materials to modify the properties of conventional asphalt paving materials for pavement longevity, e.g., No-agitation Tire Rubber Modified Bitumen (TR-MB). Since there are 1 billion tires stockpiled and 300 million annual increments of tires generated per year in the United States, CRM also could be the potential solution for the solid waste problem. TR-MB is quite a new technology leading to bituminous binders, such as polymer-modified bitumen, in terms of both rheology and required efforts during paving operations. Their manufacturing is strongly dependent on the selected processing variables as well as on the selected materials. This research will include studying the influence of processing conditions on the modification process, storage stability and overall properties of the final bitumen-tire rubber blends.

Principal Investigator

Dr. K. Wayne Lee


Dr. George Veyera


University of Rhode Island

Project Status


Project Cost


Start Date


Project Type


End Date


Agency ID



Office of the Assistant Secretary for Research and Technology, University Transportation Centers Program, Department of Transportation
University of Rhode Island

Implementation of Research Outcomes:

No reported implementation prior to project end.

Impacts and Benefits of Implementation:

No reported impacts and benefits prior to project end.

Printable Project Information Sheet

April 2019 Semi-Annual Progress Report

June 2019 Bi-Monthly Progress Report

August 2019 Bi-Monthly Progress Report

October 2019 Semi-Annual Progress Report

January 2020 Quarterly Progress Report

April 2020 Quarterly Progress Report