Hydration of calcium sulfoaluminate cement blended with blast-furnace slag

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The present study investigates the hydration of calcium sulfoaluminate (CSA) cement blended with blastfurnace slag (BFS). BFS was added at dosages of 0, 30, 50 and 70% of the binder mass. The samples were cured for up to 360 days and characterized using various analytical techniques. The obtained results indicate that BFS-blended CSA cement incorporating 30% BFS exhibits compressive strength comparable to that of the sample solely consisting of CSA cement. BFS incorporation in CSA cement leads to the formation of more stratlingite, possibly preventing the development of porosity due to the destabilization of CAH(10). The main hydration products of CSA cement blended with BFS are identified as ettringite, monosulfate, Al(OH)(3) and stratlingite, similar to those forming during the hydration of CSA cement, though stratlingite increasingly forms at higher BFS contents.
Publisher
ELSEVIER SCI LTD
Issue Date
2021-01
Language
English
Article Type
Article
Citation

CONSTRUCTION AND BUILDING MATERIALS, v.268, pp.121214

ISSN
0950-0618
DOI
10.1016/j.conbuildmat.2020.121214
URI
http://hdl.handle.net/10203/280654
Appears in Collection
CE-Journal Papers(저널논문)
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