Study of Alite-Calcium Sulfoaluminate Cement Produced from a High-Alumina Fly Ash
The purpose of this research was to produce an alite-calcium sulfoaluminate (A/CSA) cement using high-alumina coal fly ash as raw material in replacement for bauxite. This ash is different from bauxite in terms of mineralogy and would represent a less-expensive bauxite alternative in A/CSA clinkering. The hydration behavior, as well as the mechanical and physical properties including mechanical strength, carbonation, dimensional stability, and resistivity, were determined and compared to high-quality commercial ordinary portland cement (OPC) and CSA cements. The main conclusions include the successful production of A/CSA clinker from high-alumina fly ash, with high contents of alite (30 wt.%) and ye'elimite (51 wt.%) at a low firing temperature. The main hydration products include ettringite and AFm (or alumina, ferric oxide, monosulfate) phases. The A/CSA cement exhibits higher early compressive strength than commercial OPC and CSA cements after 1, 7, and 14 days, and presents similar mechanical properties to CSA cement after 90 days, with no visible carbonation.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/13846872
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Supplemental Notes:
- © 2022, American Concrete Institute. Abstract reprinted with permission from the American Concrete Institute.
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Authors:
- Duvallet, Tristana Y
- Paraschiv, Manuelle
- Oberlink, Anne E
- Jewell, Robert B
- Robl, Thomas L
- Publication Date: 2022-1
Language
- English
Media Info
- Media Type: Web
- Pagination: pp 263-273
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Serial:
- ACI Materials Journal
- Volume: 119
- Issue Number: 1
- Publisher: American Concrete Institute (ACI)
- ISSN: 0889-325X
- Serial URL: https://www.concrete.org/publications/acimaterialsjournal.aspx
Subject/Index Terms
- TRT Terms: Cement; Fly ash; Hydration; Mechanical properties
- Subject Areas: Bridges and other structures; Materials; Pavements; Transportation (General);
Filing Info
- Accession Number: 01856439
- Record Type: Publication
- Files: TRIS
- Created Date: Aug 29 2022 9:27AM