Specifications and Recommendations for Recycled Materials Used as Unbound Base Course
Project 68 provides recommendations and specifications for recycled asphalt pavement and recycled concrete aggregate that can be used as unbound base course.
This project, in partnership with Jackson State University, updates on the development of a software program. WiscLEACH, a web-based computing tool, is used to evaluate groundwater impacts from beneficial use of industrial byproducts in roadway stabilization and embankment.structural fill applications.
The objectives of this study was to determine the resilient modulus of two recycled roadway materials: recycled pavement material and road surface gravel with and without cement and cement kiln dust stabilization. In order to replicate field conditions, Large Scale Model Experiments were conducted.
These reports detail the properties and considerations of using materials in green infrastructure construction.
In this research, possible reuse of discarded asphalt shingles as structural fill was investigated. The engineering properties that were evaluated include: compaction characteristics, hydraulic conductivity, compressability shear strength, and coefficient of lateral earth pressure at rest.
Ground tire rubber (GTR) is a unique recycled material and it is not clear what the optimum method for incorporating GTR in the asphalt is. This project focused on developing optimum methods of processing and blending GTR, reacting time between GTR and asphalt binders while blending, and the designing of GTR modified binders to yield superior performance.
This project evaluate the performance of cementitous high carbon fly ash stabilized recycled asphalt pavement as a base course material in a real world setting. Three test road cells were built in partnership with MnROAD in Minnesota.
Conducted by UW, this project is sponsored by the Minnesota Local Roads Research Board (LRRB), with support from the RMRC. This project is evaluating the stabilization of reclaimed pavement material (RPM) and RAP with CCPs.