Geoenvironmental impacts of using high carbon fly ash in structural fill applications : [research summary].

Aydilek, Ahmet; University of Maryland (College Park, Md.). Department of Civil and Environmental Engineering

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Geoenvironmental impacts of using high carbon fly ash in structural fill applications : [research summary].

2013-03-01
By Aydilek, Ahmet

[PDF-60.83 KB]

English

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Details:

Creators:

Aydilek, Ahmet
Corporate Creators:

University of Maryland (College Park, Md.). Department of Civil and Environmental Engineering
Subject/TRT Terms:

[+]

Admixtures Concrete Embankments Environmental Impacts Fly Ash Fly Ash--Leaching Laboratory Tests Leaching Metals Metals--Environmental Aspects Toxicity
Publication/ Report Number:

SP909B4P
Resource Type:

Tech Report
Geographical Coverage:

Maryland
Corporate Publisher:

Maryland. State Highway Administration
Abstract:

Coal power plants generate approximately 50% of the electricity in the

United States. As a result, large amounts of coal combustion byproducts,

especially fly ash, are produced annually. Only 40% of the fly ash

(mainly C and F-type classifications) can be successfully reused in

applications such as cement, concrete production, and soil stabilization.

The rest of these materials contain significant amounts of unburned

carbon and cannot be used as a concrete additive. As a result, they are

largely disposed of in landfills.

There have been significant efforts to reuse high-carbon fly ash (HCFA)

in highway applications such as highway base layers and embankments

because it is a geomechancially strong material. However, the potential

for leaching heavy metals to groundwater is the key concern that

currently prevents reuse for these applications.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:d0239052598404bc6173e01b059ead2ad1c12860c7334ef7051b56abad082e19
Download URL:

https://rosap.ntl.bts.gov/view/dot/25789/dot_25789_DS1.pdf
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Geoenvironmental impacts of using high carbon fly ash in structural fill applications : [research summary].

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