Detail publikace

Thermal stability of the phases developed at high-pressure hydrothermal curing of class G cement with different pozzolanic and latent hydraulic additives

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

Originální název

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Multicomponent cement pastes based on the Class G cement substituted by 30 mass% of binary or ternary mixtures of silica fume (SF), metakaolin (MK), and ground granulated blast-furnace slag (BFS) were submitted to hydrothermal curing at 150 degrees C and 18 MPa for 7 days. X-ray diffraction (XRD), Fourier Transform Infrared analyses in the mid-IR region (FTIR), and thermogravimetric-differential scanning calorimetry (TGA/DSC) were performed for evaluation of phase compositions and to assess their relation to compressive strength. The highest amount of mainly amorphous thermal stable C-S-H and C-A-(S)-H phases with the highest polymerization degree was formed by using 15 mass% SF-15 mass% MK mixture, which led to the lowest CaO/SiO2 (C/S) ratio and the highest compressive strength. Crystalline phases detected in this sample were also thermal stable tobermorite, hibschite, and katoite. The increase in the C/S ratio, as well as slowly reacting BFS, resulted in the transformation of polymerized structures of hydration products to the smaller units and lower degree of hydration followed by decreased compressive strength values. Undesired formation of crystalline alpha-C2SH, occurring also in the paste without additives addition, was proved in the composition with a higher amount of BFS and higher C/S ratio.

Klíčová slova

Hydrothermal curing; Silica fume; Metakaolin; Ground granulated blast-furnace slag; FTIR; TG-DSC

Autoři

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

Vydáno

21. 2. 2022

Nakladatel

SPRINGER

Místo

DORDRECHT

ISSN

1588-2926

Periodikum

Journal of Thermal Analysis and Calorimetry

Ročník

147

Číslo

Stát

Maďarsko

Strany od

9891

Strany do

9902

Strany počet

URL

https://link.springer.com/article/10.1007/s10973-022-11254-2

BibTex

@article{BUT181442,
  author="Eva {Kuzielova} and Michal {Slaný} and Matúš {Žemlička} and Pavel {Šiler} and Jiří {Másilko} and Martin {Palou}",
  title="Thermal stability of the phases developed at high-pressure hydrothermal curing of class G cement with different pozzolanic and latent hydraulic additives",
  journal="Journal of Thermal Analysis and Calorimetry",
  year="2022",
  volume="147",
  number="18",
  pages="9891--9902",
  doi="10.1007/s10973-022-11254-2",
  issn="1588-2926",
  url="https://link.springer.com/article/10.1007/s10973-022-11254-2"
}