Evaluation of Coal Combustion Products in Hot-Mix Asphalt Mixture

Gao, Ya; Hossain, Mustaque

i

Evaluation of Coal Combustion Products in Hot-Mix Asphalt Mixture

2021-12-01
By Gao, Ya ; Hossain, Mustaque

File Language:

English

Details

Creators:

Gao, Ya ; Hossain, Mustaque
Corporate Creators:

Kansas State University. Transportation Center
Corporate Contributors:

Kansas Department of Transportation. Bureau of Research
Subject/TRT Terms:
Publication/ Report Number:

KS-21-03
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

July 2018–June 2021
Corporate Publisher:

Kansas Department of Transportation. Bureau of Research
Abstract:

Very fine coal combustion products (CCPs) are a by-product of burning coal when generating electricity. Fly ash has generally been used in portland cement concrete. However, some CCPs have been used in hot-mix asphalt (HMA) as mineral fillers. Due to current changes of Environmental Protection Agency (EPA) emission requirements, large volumes of fly ash containing sulfur are produced. This ash cannot be used in traditional concrete. Therefore, this research was undertaken to investigate if some of these finer CCPs containing sulfur can be used beneficially in HMA. In this project, fly ash was blended with PG 58-28 asphalt binder at various percentages (5%, 10%, and 15%). A rotational viscosity test was performed on the blend to see what percentages of fly ash (by mass of asphalt binder) would be workable. All percentages were found to be viable. Hamburg wheel tracking tests were then conducted on these Superpave HMA mixtures. Based on the Hamburg test results, the best performing mixture with 15% of fly ash was selected to conduct further tests, such as Modified Lottman, Dynamic modulus, and S-VECD test, and compare with the control group (without fly ash). This report presents these results.
Format:

PDF
Funding:

C2132
Download URL:

https://rosap.ntl.bts.gov/view/dot/60618/dot_60618_DS1.pdf
File Type:

[PDF - 1.60 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:dc949dd66b8dfcc625fd19c39f5f99020733b1371506fb5e024071f4f5310186

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.