Glassy phase and reaction products of Iowa fly ashes
The crystalline and glassy phases of a series of low calcium to high calcium Iowa fly ashes were investigated. Elemental analyses were conducted by quantitative x-ray fluorescence (QXRF) techniques. Crystalline compounds were determined by quantitative x-ray diffraction (QXRD). Glassy phase compositions of the ashes were estimated from these data. The glassy phase of the high calcium ashes is believed to be in a more highly strained chemical state as compared to the low calcium ashes, and hence, more reactive. It was shown that the elemental analysis consistency of Iowa ashes, from a given generating station, is not a valid indicator of its fundamental physical properties. The glassy phase of Iowa fly ashes are shown to contain significant amounts of the cementitious building blocks of calcium, aluminum, and silicon.
- Research Organization:
- Iowa State Univ. of Science and Technology, Ames (USA)
- OSTI ID:
- 6706205
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FLY ASH
CHEMICAL COMPOSITION
PHYSICAL PROPERTIES
AIR POLLUTION
ALUMINIUM
CALCIUM
IOWA
SILICON
X-RAY DIFFRACTION
X-RAY FLUORESCENCE ANALYSIS
AEROSOL WASTES
ALKALINE EARTH METALS
ASHES
CHEMICAL ANALYSIS
COHERENT SCATTERING
DIFFRACTION
ELEMENTS
FEDERAL REGION VII
METALS
NONDESTRUCTIVE ANALYSIS
NORTH AMERICA
POLLUTION
RESIDUES
SCATTERING
SEMIMETALS
USA
WASTES
X-RAY EMISSION ANALYSIS
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)