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Title: Ground Coal Bottom Ash as Portland Cement Replacement in Concrete

Author(s): Gallagher

Publication: Web Session

Volume: ws_S22_Gallagher.pdf

Issue:

Appears on pages(s):

Keywords:

DOI:

Date: 3/28/2022

Abstract:
The origin of bottom ash in coal-fired electricity generation and its occurrence in harvested ash was reviewed. The pozzolanic reactivity of a bottom ash ground to different average diameters was evaluated. Lab concrete mixtures achieving the desired properties for bridge deck, pavement and foundation applications were successfully developed using 4 different coal ashes, including bridge deck, pavement and foundation mixtures using 20% ground bottom ash. The fresh and hardened properties of the lab concrete mixtures are compared.