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Mineralogy of western (US) fly ash

Journal Article · · Cem. Concr. Res.; (United States)
Twenty-six fly ash specimens from N. Dakota, Wyoming and Montana lignite and sub-bituminous coals have been studied by X-ray diffraction. Chemically these western fly ashes are characterised by higher CaO + MgO + SO/sub 3/ contents and lower Al/sub 2/O/sub 3/ + SiO/sub 2/ contents than eastern bituminous fly ashes. The western fly ashes have greater proportions of crystalline materials, the characteristic phase being quartz, lime periclase, anhydrite, ferrite spinel, tricalcium aluminate, merwinite and melilite.
OSTI ID:
6255405
Journal Information:
Cem. Concr. Res.; (United States), Journal Name: Cem. Concr. Res.; (United States) Vol. 14:4; ISSN CCNRA
Country of Publication:
United States
Language:
English