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Susan E. Burns, Ph. D., P.E., F.ASCE
This lecture will explore the engineering behavior of weathered deposits of fly ash produced through the combustion of coal for power generation. Historically, excess fly ash generated in the United States was dry disposed on land or sluiced into ponds for solid/liquid separation, while freshly generated ash was sold for application in concrete; however, recent seasonal shortages in the fly ash market have generated interest in reclamation and beneficial use of high organic content and ponded ash as a supplementary cementitious material. Understanding the behavior of these materials is critical in engineering applications because exposure to water during disposal/long-term storage alters the morphology and geochemistry of the ponded ash, which in turn impacts its engineering behavior. Trends in the chemical, morphological, and mechanical properties of fly ash will be analyzed as a function of storage conditions, along with recommendations for beneficial use applications in the field, such as construction materials.
Keller North America provides a wide range of geotechnical engineering and construction services to improve soils in place and to both construct new and rehabilitate foundations. The techniques that will be discussed include Compaction & Jet Grouting, Earth Retention and Shoring, Vibro Compaction & Replacement, Micropiles, Soil Mixing for Deep Basement Excavations, and Pile Driving. Within our range of services, a Ground Modification solution is generally available for the toughest subsurface conditions.
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NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.