Detail publikace

Phase Composition of Silica Fume-Portland Cement Systems Formed under Hydrothermal Curing Evaluated by FTIR, XRD, and TGA

KUZIELOVA, E. SLANÝ, M. ŽEMLIČKA, M. MÁSILKO, J. PALOU, M.

Originální název

Phase Composition of Silica Fume-Portland Cement Systems Formed under Hydrothermal Curing Evaluated by FTIR, XRD, and TGA

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Two substitution levels of Portland cement by silica fume (SF; 30 and 50 mass%) and three hydrothermal treatment regimes (0.5, 1.2, and 2 MPa and 165, 195, and 220 degrees C for 7 days, respectively) were selected for the investigation of high-temperature phase formation. A combination of thermogravimetric, X-ray diffraction, and Fourier transform infrared analyses in the mid-IR region was used to overcome the shortcomings of individual techniques for the identification of these complex systems. Changes in molecular water amounts, the polymerization degree of silicate chains, or their decomposition due to transformations and crystallization of phases at hydrothermal conditions were observed and discussed concerning composition. Contrary to the calciochondrite, hydrogrossular phases, alpha-C2SH, and jaffeite detected in the systems without SF, a decrease in CaO/SiO2 ratio resulted in the formation of stable tobermorite in the case of 30 mass% SF, whilst calcium hydrogen silicate, gyrolite, and cowlesite were identified as more thermally stable phases in the samples with 50 mass% SF.

Klíčová slova

hydrothermal curing; silica fume; FTIR

Autoři

KUZIELOVA, E.; SLANÝ, M.; ŽEMLIČKA, M.; MÁSILKO, J.; PALOU, M.

Vydáno

24. 5. 2021

Nakladatel

MDPI

Místo

BASEL

ISSN

1996-1944

Periodikum

Materials

Ročník

14

Číslo

11

Stát

Švýcarská konfederace

Strany od

1

Strany do

18

Strany počet

18

URL

https://www.mdpi.com/1996-1944/14/11/2786

Plný text v Digitální knihovně

http://hdl.handle.net/11012/204075

BibTex

@article{BUT176825,
  author="Eva {Kuzielova} and Michal {Slaný} and Matúš {Žemlička} and Jiří {Másilko} and Martin {Palou}",
  title="Phase Composition of Silica Fume-Portland Cement Systems Formed under Hydrothermal Curing Evaluated by FTIR, XRD, and TGA",
  journal="Materials",
  year="2021",
  volume="14",
  number="11",
  pages="1--18",
  doi="10.3390/ma14112786",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/14/11/2786"
}