Assessment of potential concerns associated with the use of cement kiln baghouse dust in FDOT concrete mixes : [summary].

Schert, John; Townsend, Timothy; Wu, Chang-Yu; Vinson, Timothy; Hayes, Josh; Wang, Jun

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Assessment of potential concerns associated with the use of cement kiln baghouse dust in FDOT concrete mixes : [summary].

2013-08-01
By Schert, John ; Townsend, Timothy ; Wu, Chang-Yu

File Language:

English

Details

Creators:

Schert, John ; Townsend, Timothy ; Wu, Chang-Yu ; Vinson, Timothy ; Hayes, Josh ; Wang, Jun
Corporate Creators:

Hinkley Center for Solid and Hazardous Waste Management
Subject/TRT Terms:
Publication/ Report Number:

BDK75 977-50
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

Florida. Dept. of Transportation
NTL Classification:

NTL-HIGHWAY/ROAD TRANSPORTATION-Design ; NTL-HIGHWAY/ROAD TRANSPORTATION-Materials
Abstract:

The 100+ cement plants in the U.S. emit about 7% of the nation’s mercury (Hg) air pollution from stationary sources. In 2010, the Environmental Protection Agency released new rules for cement plant Hg emissions which will reduce them greatly by 2015. Air pollution controls that remove particulate matter from stack emissions (baghouses) during cement production produce tons of partially calcined byproduct. Most of this returns to clinker production, but some is used in the finishing mill as an inorganic processing addition (dust shuttling) and is referred to as baghouse filter dust (BFD), which differs from the waste product cement kiln dust (CKD) because BFD is used to make cement and must conform to ASTM C465. (Little CKD is produced in Florida due to return of captured particulate to the clinker production process.) Dust shuttling reduces stack Hg emissions, shifting Hg and other semi-volatile trace metals from stack emissions to cement and concrete products, creating the need to assess dangers to workers and the environment due to exposure to BFD and BFD-amended concrete.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/26333/dot_26333_DS1.pdf
File Type:

[PDF - 1.62 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:9599f5cc0b131259d82a4cdb3014137c41984e6742303d2af19414ccde958e46

File Language:

English

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