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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Mercury Controls on Power Plants: Potential Impacts on Fly Ash Use in Concrete
Author(s): L. K. Weavers, H. W. Walker, W. Wolfe, D. Golightly, R Sun,
C.-M. Cheng, P. Taerakul, and D. M. Golden
Publication: Special Publication
Appears on pages(s): 837-858
Keywords: coal ash use; concrete; concrete deterioration; curing; mercury release
Abstract:An estimated 144 metric tons of mercury are emitted into the atmosphere of the continental United States each year, and approximately one-third of these emissions come from coal-fired utility boilers. Maximum achievable control technology (MALT) for mercury, effective in 2007, may significantly impact coal combustion byproduct reuse initiatives, especially the utilization of fly ash in concrete. If powdered activation carbon (PAC) injection is selected as a mercury control strategy, both the percent of car-bon in fly ash and the mercury content in the coal combustion byproduct will increase. This paper describes an EPRI funded project to investigate the possible release of mercury during curing of concrete containing fly ash and mercury-loaded PAC, and to determine if conditions exist during concrete curing that may result in the release of mercury from the coal combustion byproducts in the concrete matrix. EPRI initiated this research program to address issues associated with mercury contaminated fly ash that could evolve from installation of MACT technology for mercury control.
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