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Studies about the hydration of hybrid “alkaline-belite” cement

AuthorsSánchez-Herrero, M. J.; Fernández-Jiménez, Ana; Palomo, Ángel
Issue Date2019
PublisherFrontiers Media
CitationFrontiers in Materials 6: 66 (2019)
AbstractThe mechanical performance of a hybrid cement containing 48% fly ash, 48% mineralized belite clinker, 1. 5% gypsum and 2.5% Na2SO4 was analyzed and the hydration products were identified. The findings showed that the newly designed cement met European standard EN 197-1 compositional, mechanical and setting time requirements (cement type IVB). The hydration products forming in this blended “alkaline-belite” cement (as it was determined through XRD, 29Si and 27Al MAS NMR and electron microscopy) consisted in a mix of cementitious gels: C-(A)-S-H and N-(C)-A-S-H, which interacted and over time evolved toward the latter with no detriment to the mechanical strength developed by the cement.
Publisher version (URL)https://doi.org/10.3389/fmats.2019.00066
Appears in Collections:(IETCC) Artículos
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