Lea Žibret (Author), Andrej Ipavec (Author), Sabina Kramar (Author)

Abstract

The incorporation mechanism of impurities derived from raw materials into a belite-sulfoaluminate cement clinker with bottom ash was investigated in two raw mixtures. Alkalis lowered the sintering temperature by 50 °C. Ti stabilized β belite and prevented the formation of γ-belite. Sodalite solid solution showed an incomplete substitution of Si by Al. At a higher Ti content ferrite solid solution trended towards perovskite composition. Although calcium sulfoaluminate only fully developted at 1300 °C, the clinkers sintered at 1200 °C were the most reactive, as the presence of anhydrite at 1200 °C accelerated early hydration. Clinker reactivity decreased with an increase in sintering temperature.

Keywords

klinker BSCA;belit;kalcijev sulfoaluminat;sekundarne surovine;mikrostruktura;reaktivnost;BSCA clinker;belite;calcium sulfoaluminate;secondary raw materials;microstructure;reactivity;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: ZAG - Slovenian National Building and Civil Engineering Institute
Publisher: Scientific & Technical Press
UDC: 54
COBISS: 93573891 Link will open in a new window
ISSN: 0950-0618
Views: 7
Downloads: 0
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Other data

Secondary language: Slovenian
Secondary keywords: klinker BSCA;belit;kalcijev sulfoaluminat;sekundarne surovine;mikrostruktura;reaktivnost;
Source comment: Št. članka: 126289;
Pages: 14 str.
Issue: ǂVol. ǂ321
Chronology: Feb. 2022
DOI: 10.1016/j.conbuildmat.2021.126289
ID: 19461227