Detail publikace

Effect of Ultrafine Additives on the Morphology of Cement Hydration Products

YAKOVLEV, G. DROCHYTKA, R. SKRIPKIUNAS, G. URKHANOVA, L. POLYANSKIKH, I. PUDOV, I. KARPOVA, E. SAIDOVA, Z. ELREFAI, A.

Originální název

Effect of Ultrafine Additives on the Morphology of Cement Hydration Products

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The present research is focused on the investigation of the influence of ultrafine additives on the structure formation of hardened cement paste and the establishment of the mechanisms of the morphological transformations, which determine the properties of hydrated products. In the course of the research, the modification of ordinary Portland cement was performed by the suspension of multi-walled carbon nanotubes (MWCNTs), carbon black (CB) paste, and silica fume (SF). Scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) microanalysis, X-ray diffraction (XRD) analysis, thermal analysis, and Fourier-transform infrared (FTIR) spectroscopy were used to study cement hydration products. The morphology of hardened cement paste depends on the chemical reactivity of additives, their geometry, and their genesis. The action mechanism of the inert carbon-based additives and pozzolanic silica fume were considered. The cement hydration products formed in the process of modification by both types of ultrafine additives are described. In the case of the modification of cement paste by inert MWCNTs and CB paste, the formation of cement hydration products on their surface without strong adhesion was observed, whereas in the case of the addition of SF separately and together with MWCNTs, the strong adhesion of additives and cement hydration products was noted.

Klíčová slova

cement; ultrafine additives; carbon black; carbon nanotubes; silica fume; cement hydration products

Autoři

YAKOVLEV, G.; DROCHYTKA, R.; SKRIPKIUNAS, G.; URKHANOVA, L.; POLYANSKIKH, I.; PUDOV, I.; KARPOVA, E.; SAIDOVA, Z.; ELREFAI, A.

Vydáno

22. 8. 2021

Nakladatel

MDPI

Místo

Switzerland

ISSN

2073-4352

Periodikum

Crystals

Ročník

11

Číslo

8

Stát

Švýcarská konfederace

Strany od

1002

Strany do

1022

Strany počet

20

URL

https://www.mdpi.com/2073-4352/11/8/1002

Plný text v Digitální knihovně

http://hdl.handle.net/11012/201478

BibTex

@article{BUT172338,
  author="G.I. {Yakovlev} and Rostislav {Drochytka} and Gintautas {SKRIPKIUNAS} and Larisa {Urkhanova} and Irina {Polyanskikh} and Igor {Pudov} and Ekaterina {KARPOVA} and Zarina {Saidova} and Ali E. M. M. {Elrefai}",
  title="Effect of Ultrafine Additives on the Morphology of Cement Hydration Products",
  journal="Crystals",
  year="2021",
  volume="11",
  number="8",
  pages="1002--1022",
  doi="10.3390/cryst11081002",
  issn="2073-4352",
  url="https://www.mdpi.com/2073-4352/11/8/1002"
}