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Influence of dredging mud on the calcium sulfoaluminate cement hydration
- Dredging sediment refers to materials removed from the bottom of a water body during dredging operations. Mainly the dreading mud contains clay, silt, sand, water, and alkalis. This work incorporated dredging mud into the calcium sulfoaluminate cement at replacement levels of 0%, 10%, 30%, and 50% by weight. Pastes were evaluated after 1d, 28d, and 90d- hydration through mechanical strengths and the reaction rate by isothermal conduction calorimetry. XRD and MIP characterized the reaction products. The findings showed that small replacements (10% and 30%) increased early strength with higher ettringite formation in the system at 1d of curing. However, the evolution of mechanical strength was lower than the reference (0% replacement) over time. The results showed that in low replacement dosages, the dredging mud act as a nucleation site for the hydration of calcium sulfoaluminate phases.
Autor*innen: | Luis Urbano Durlo TambaraORCiD |
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Koautor*innen: | I. D. Batista, J. C. Carneiro, L. G. C. H. Silva, M. Taborda-Barraza, A. R. G. Azevedo |
Dokumenttyp: | Posterpräsentation |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2023 |
Organisationseinheit der BAM: | 7 Bauwerkssicherheit |
7 Bauwerkssicherheit / 7.4 Baustofftechnologie | |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Freie Schlagwörter: | Calcium sulfoaluminate cement; Dredging mud; Hydration; Paste |
Themenfelder/Aktivitätsfelder der BAM: | Material |
Veranstaltung: | 7th International Conference Non-Traditional Cement & Concrete (NTCC) |
Veranstaltungsort: | Brno, Czech Republic |
Beginndatum der Veranstaltung: | 25.06.2023 |
Enddatum der Veranstaltung: | 28.06.2023 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 09.08.2023 |
Referierte Publikation: | Nein |