Ash utilization in highways: Delaware demonstration project
This report documents the design, preconstruction laboratory testing, construction and performance monitoring of a fly ash embankment constructed within a new interchange for an Interstate highway in Delaware. Data presented in this interim report indicates that fly ash fill is comparable to granular borrow material from an engineering standpoint, and that the preliminary groundwater quality monitoring results have indicated no adverse impact on water quality. In this project, fly ash was used for the construction of two of the six new interchange ramps in the Interstate 495 project connecting Edgemoor Road with the highway northeast of Wilmington, Delaware. These ramps were constructed during June 1987. This report presents the details of the preconstruction testing, construction and interim groundwater monitoring activities. Approximately 8000 tons of fly ash were delivered to the project site from moisture controlled stockpiles. All fly ash was able to meet or exceed DEL DOT compaction requirements. At no time during the construction of the fly ash fill was there any problems with dusting. Four groundwater monitoring wells were installed in the vicinity of the site in January 1987, and quarterly samples obtained and analyzed to determine effects on groundwater quality. This interim monitoring data confirms that fly ash is an environmentally acceptable alternative to natural soil when used in a highway embankment. 13 refs., 62 figs., 30 tabs.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (USA); Delmarva Power and Light Co., Wilmington, DE (USA)
- OSTI ID:
- 5906411
- Report Number(s):
- EPRI-GS-6481
- Country of Publication:
- United States
- Language:
- English
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AEROSOL WASTES
ASHES
CARBONACEOUS MATERIALS
COAL
COMBUSTION PRODUCTS
CONSTRUCTION
DELAWARE
DEMONSTRATION PROGRAMS
ECONOMICS
EMBANKMENTS
ENERGY SOURCES
FEDERAL REGION III
FLY ASH
FOSSIL FUELS
FUELS
GROUND WATER
HYDROGEN COMPOUNDS
MATERIALS
MONITORING
NORTH AMERICA
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RESIDUES
ROADS
TESTING
USA
WASTE PRODUCT UTILIZATION
WASTES
WATER