Sulfur Speciation in Granulated Blast Furnace Slag: An X-ray Absorption Spectroscopic Investigation
Sulfur speciation in a granulated blast furnace slag (GGBFS) was analyzed by X-ray absorption near edge structure spectroscopy (XANES) before and after activation by saturated calcium hydroxide and 5 normal sodium hydroxide solutions. The solution to GGBFS ratio was 0.4. XANES showed that sulfur in GGBFS existed mostly as sulfides (frozen in calcium polyhedra) with a minor amount as sulfate. A slowly-cooled blast furnace slag, in contrast, had most of the sulfide transformed to sulfate. After activation of GGBFS, more sulfate formed and crystalline sulfide phases became more apparent. More slag reacted at lower pH than at higher pH.
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Availability:
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Supplemental Notes:
- Abstract reprinted with permission from Elsevier
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Authors:
- Roy, Amitava
- Publication Date: 2009-8
Language
- English
Media Info
- Media Type: Print
- Features: Figures; References; Tables;
- Pagination: pp 659-663
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Serial:
- Cement and Concrete Research
- Volume: 39
- Issue Number: 8
- Publisher: Elsevier
- ISSN: 0008-8846
- Serial URL: http://www.sciencedirect.com/science/journal/00088846
Subject/Index Terms
- TRT Terms: Absorption; Cement; Granulated slag; Sulfates
- Uncontrolled Terms: Sulfur speciation; X-ray spectroscopy
- Subject Areas: Highways; Materials; I35: Miscellaneous Materials;
Filing Info
- Accession Number: 01141862
- Record Type: Publication
- Files: TRIS
- Created Date: Oct 20 2009 7:40AM