Barbara Čeplak (Avtor), Katarina Šter (Avtor), Maruša Borštnar (Avtor), Luka Škrlep (Avtor), Mirijam Vrabec (Avtor), Sabina Kramar (Avtor)

Povzetek

This paper presents a study on the influence of different amounts of alkalis (K2O and Na2O) on clinker phase formation, microstructure, phase composition and reactivity of belite-sulfoaluminate cement clinker. Using X-ray powder diffraction and scanning electron microscopy with energy dispersive spectrometry, it was found that the amount of C2S and C4AF increases with the incorporation of alkalis, while the amount of C4A3Ś and CŚ decreases. In addition to the major phases, the samples with alkalis also consist of minor phases such as C3A (tricalcium aluminate), KŚ (arcanite), and KC2Ś3 (Ca-langbeinite). The major ions in the major phases were substituted by alkali cations and some other ions (Ca2+, Al3+, Fe3+, S2-, S6+, Si4+). The alkalis also affect the microstructure of the clinker, e.g., the shape of the grains. Consequently, isothermal calorimetry was used to detect differences in hydration kinetics. The clinker with 2 wt. % K2O content was the most reactive, while the sample with 0.5 wt. % Na content was the least reactive. The latter was primarily influenced by the content of the main and minor phases of the clinker.

Ključne besede

klinker BCSA;mikrostruktura;reaktivnost;alkalije;razvoj;odprti dostop;BCSA clinker;microstrcuture;reactivity;alkalis;open access;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: ZAG - Zavod za gradbeništvo Slovenije
UDK: 548/549
COBISS: 130288387 Povezava se bo odprla v novem oknu
ISSN: 0862-5468
Št. ogledov: 14
Št. prenosov: 3
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarne ključne besede: klinker BCSA;mikrostruktura;reaktivnost;alkalije;razvoj;odprti dostop;
Komentar vira: Soavtorji: Katarina Šter, Maruša Mrak, Luka Škrlep, Mirijam Vrabec, Sabina Dolenec;
Strani: str. 527-539
Letnik: ǂvol. ǂ66
Zvezek: ǂno. ǂ4
Čas izdaje: 2022
DOI: 10.13168/cs.2022.0049
ID: 17332130