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- Title
Characterization of Fly Ashes for Sulfate Resistance.
- Authors
Dhole, Rajaram; Thomas, Michael D. A.; Folliard, Kevin J.; Drimalas, Thano
- Abstract
The sulfate resistance of mixtures containing six fly ashes was studied with reference to their chemical and mineralogical compositions. Quantitative analysis of the mineralogical composition of fly ashes was carried out through X-ray diffraction (XRD) using the Rietveld method of analysis. Bulk and glass composition of the fly ash particles was also determined by using scanning electron microscopy (SEM) and energy-dispersive X-ray analysis (EDXA). The sulfate resistance of fly ash mortars was evaluated using the ASTM C1012/C1012M test. The performance of each fly ash in the sulfate resistance test was related to the chemical and mineralogical composition of the fly ash and its position on the ternary (CaO-SiO2-Al2O3) diagram. The study showed that the nature of glass is an important factor in determining the sulfate resistance of fly ash mixtures in a sulfate environment.
- Publication
ACI Materials Journal, 2013, Vol 110, Issue 2, p159
- ISSN
0889-325X
- Publication type
Academic Journal
- DOI
10.14359/51685530