State Water Resources Research Institute Program

Project Id: 2010MD209B
Title: Leaching of Heavy Metals from High Carbon Fly Ash--Stabilized Soils in Highway Embankments
Project Type: Research
Start Date: 1/ 1/2009
End Date: 1/ 1/2010
Congressional District:
Focus Categories: Toxic Substances, Groundwater
Keywords: Fly ash, highway, embankments, leaching, heavy metals
Principal Investigators: Davis, Allen (U. Maryland); Aydilek, Ahmet H (University of Maryland)
Federal Funds: $ 6,000
Non-Federal Matching Funds: $ 15,000
Abstract: Fly ashes produced by several power plants in United States occasionally contain significant amounts of unburned carbon due to common use of low nitrogen-oxide and sulphur-oxide burners in recent years, and these fly ashes are being landfilled at large percentages. A study will be conducted to evaluate the leaching potential of embankment soils mixed with high carbon fly ashes and the potential groundwater impacts through a combination of column tests and computer modeling. The findings of the proposed study are expected to increase beneficial reuse of fly ashes while promoting sustainability in highway construction.

Progress/Completion Report, 2010, PDF

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