Update of WiscLEACH Roadway Environmental Assessment Software

Update of WiscLEACH Roadway Environmental Assessment Software

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.

Recycled Base Course Materials Stabilized with Cement and Cement Kiln Dust

Recycled Base Course Materials Stabilized with Cement and Cement Kiln Dust

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.

Evaluation of Recycled Asphalt Shingles as Structural Fill

Evaluation of Recycled Asphalt Shingles as Structural Fill

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.

Synthesis of Use of Crumb Rubber in Hot Mix Asphalt

Synthesis of Use of Crumb Rubber in Hot Mix Asphalt

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.

Assessment of Leaching in Embankments

Assessment of leaching in Embankments constructed with Coal Fly Ash (Colebrook, NH) and C&D Debris (Epping, NH)

 

This project will be conducted by UNH with a budget of $22,000 funded by US EPA IAG. Monitoring of leachate from a full-scale coal fly ash embankment in Colebrook, NH will continue until the ground freezes in the winter, and will resume in the spring. Additional leaching and hydrogen sulfide monitoring will be conducted at a full-scale embankment constructed of construction and demolition debris fines.