Project 44
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.
Project 45
Modulus and CBR Values for Construction and Demolition Debris (UNH)
This project will be conducted by UNH with a budget of $77,203 to be funded by the RMRC Pooled Fund. Additional funds $42,820 were provided in the form of a tuition and a stipend. This project addresses the need for additional information on coarse and fine aggregate obtained from C&D debris.
Project 46
Engineering Properties of RAP and RCA for Unbound Base Course Applications
Conducted by UW, this project will receive $33,000 from the Pooled Fund Study. Two-thirds of the project costs will be cost-shared from other funds. The objective of the project is to characterize the properties of unbound materials RAP and RCA used as base course and to assess how these materials behave in the field.
Project 47
Stabilization of Reclaimed Pavement Material and Road Surface Gravel with Coal Combustion Project
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.
Project 48
Using High Carbon Coal Fly Ashes to Stabilize Recycled Asphalt Pavement Materials
This project is similar to Project 47, except that it focuses on high carbon fly ash and includes an assessment of energy savings and GHG offsets by using stabilized RAP and RPM in lieu of conventional base course materials.
Project 49
Mechanisms Controlling Release of Trace Elements from Soil-Coal Fly Ash Mixtures
This is a joint CFIRE-RMRC effort that focuses on creating stronger and more durable roadways that can withstand the heavy loads of the freight traffic of the future. The project is focusing on a determining the primary mechanisms controlling release of trace elements from soil-fly ash mixtures used in subgrade stabilization.
Project 50
Evaluation of Testing Protocols for the Environmental Assessment of Fly Ash Stabilized Subgrade Materials
UW has initiated a project with the U. of Maryland and the Maryland DEQ to evaluate testing protocols for environmental assessment of subgrades stabilized with fly ash.
Project 51
Assessment of US EPA’s IWEM Model
UW led an assessment of the most recent version of IWEM model for USEPA. This work was conducted by Dr. Lin Li at Jackson State University (a HBCU) and is essentially complete. The US EPA is reviewing the results. Work this year will focus on promoting the results.
Project 52
Evaluation of the Environmental Performance of CCPs in Roadway Applications
UW will lead this project, with data contributed by UNH. It will be funded with $68,000 from the US EPA IAG. The RMRC will produce a report on the findings and outcome from the leaching behavior of Coal Fly Ash (CFA) used in University of Wisconsin Road Test Section and at the University of New Hampshire Berm Test Section. This data is particularly relevant and timely given recent CFA pond spills and increased environmental scrutiny on using CFA.
Project 53
Reconstruction of Railroads and Highways with In-Situ Reclaimed Materials
UW is conducting a joint CFIRE-RMRC project on using industrial byproducts to create highways and rail lines with very high load capacity.
Project 54
Synthesis of the Use of Crumb Rubber in Hot Mix Asphalt
We have initiated a joint research project on use of crumb rubber in HMA mixtures in collaboration with the Modified Asphalt Research Center (MARC). The specifications of each state are compared to determine similarities as well as variations from state to state. The information is used to determine commonly used materials and clearly define variables of the specifications that may alter performance.
Project 55
Engineering Properties of Recycled Asphalt Shingles in Structural Applications
This project will be conducted by UW, and is budget for $33,000 from the RMRC Pooled Fund. This study will evaluate the use of shredded recycled asphalt shingles (RAS) as embankment fill and structural fill when higher value reuse options are not available. The primary focus is on the shear strength and compressibility of RAS and RAS-soil mixtures. The hydraulic properties of RAS will also be studied.
Project 56
Analysis of Dynamic Modulus and Binder Data for High RAP
This project will be conducted by UNH, with $32,798 of funding from the RMRC Pooled Fund. A substantial amount of material is collected and tested during High RAP (WMA) projects, but there is little analysis that is being done on the test results. When Pooled funds are available this project will take the dynamic modulus and binder test data and perform some back calculations to evaluate the amount of blending that is occurring between the virgin and RAP materials.
Project 57
Green Highways Partnership Specifications Harmonization and LCA Project
The UNH Team will provide technical support to the Green Highways Partnership Reuse/Recycle team (GHP R/R Team) to develop an analysis of existing specifications and environmental regulations for industrial material use in highway applications. This will be funded at $50,000 by US EPA IAG funds.
Project 58
Development of Outreach Materials for the Local Technical Assistance Program
This project will be conducted by UNH with a budget of $75,000 from the US EPA IAG. The RMRC will develop education and outreach materials for local governments, LTAP Centers and other local agencies. The outreach materials will be designed to facilitate the transfer of technical information and sharing of knowledge on beneficial reuse of industrial by-product materials used in highway construction.
Project 59
Update of the Beneficial User Guidelines (UW)
This update of the Beneficial User Guidelines will focus on two material groups: (i) foundry materials and (ii) CCPs. It will be funded with $50,000 from FHWA.
Project 60
Quantifying the Benefits of using CCPs in Sustainable Construction
Many of the RMRC research projects have the use of CCPs as a component of the project. This particular project, led by UW, will synthesize the results RMRC research and literature reviews to better show the environmental, economic and engineering benefits of using CCPs in construction.
Project 61
Characterization of Cementitiously Stabilized Layers for Use in Pavement Design and Analysis
This is a joint RMRC-CFIRE project that will focus on improving the engineering properties of recycled pavement materials (RPM) by blending them with cementitious industrial byproducts. Funding of $33,000 will be provided from the Pooled Fund. RPM is similar to RAP or RCA, but also contains base course and subgrade materials, which degrade the engineering properties. Fly ash (a coal combustion product, or CCP) and cement kiln dust (CKD) will be used as cementitious agents.
Project 62
Long Term Performance of RAP Pavements at Demonstrations Sites (UNH)
This is a UNH project that will be funded at $50,000. The objective of this project is to compare the long-term performance of RAP pavements to virgin pavements test sections.
