Detail publikace

Application of isothermal and isoperibolic calorimetry to assess the effect of zinc on cement hydration

Originální název

Application of isothermal and isoperibolic calorimetry to assess the effect of zinc on cement hydration

Anglický název

Application of isothermal and isoperibolic calorimetry to assess the effect of zinc on cement hydration

Jazyk

en

Originální abstrakt

The aim of this work was to determine the effect of zinc on Portland cement hydration. This effect was studied by isothermal and isoperibolic calorimetry. Both calorimetry methods are suitable for measurements during the first days of hydration. Isoperibolic calorimetry monitors hydration process in real-life conditions, while isothermal calorimetry does it at a defined chosen temperature. Zinc was added to the cement in the form of two soluble salts of Zn(NO3)2, ZnCl2 and a poorly soluble compound ZnO. The concentration of zinc added was chosen as 0.05, 0.1, 0.5 and 1 mass%. The results show that increasing amounts of zinc ions in cement pastes lead to hydration retardation and reduce both the maximum temperature and the maximum heat flow due to the retarding effect of zinc. The newly formed compounds during hydration were identified by X-ray diffraction method.

Anglický abstrakt

The aim of this work was to determine the effect of zinc on Portland cement hydration. This effect was studied by isothermal and isoperibolic calorimetry. Both calorimetry methods are suitable for measurements during the first days of hydration. Isoperibolic calorimetry monitors hydration process in real-life conditions, while isothermal calorimetry does it at a defined chosen temperature. Zinc was added to the cement in the form of two soluble salts of Zn(NO3)2, ZnCl2 and a poorly soluble compound ZnO. The concentration of zinc added was chosen as 0.05, 0.1, 0.5 and 1 mass%. The results show that increasing amounts of zinc ions in cement pastes lead to hydration retardation and reduce both the maximum temperature and the maximum heat flow due to the retarding effect of zinc. The newly formed compounds during hydration were identified by X-ray diffraction method.

BibTex


@article{BUT151390,
  author="Pavel {Šiler} and Iva {Kolářová} and Radoslav {Novotný} and Jiří {Másilko} and Jaromír {Pořízka} and Jan {Bednárek} and Jiří {Švec} and Tomáš {Opravil}",
  title="Application of isothermal and isoperibolic calorimetry to assess the effect of zinc on cement hydration",
  annote="The aim of this work was to determine the effect of zinc on Portland cement hydration. This effect was studied
by isothermal and isoperibolic calorimetry. Both calorimetry methods are suitable for measurements during
the first days of hydration. Isoperibolic calorimetry monitors hydration process in real-life conditions, while
isothermal calorimetry does it at a defined chosen temperature. Zinc was added to the cement in the form of two soluble salts of Zn(NO3)2, ZnCl2 and a poorly soluble compound ZnO. The concentration of zinc added was chosen as 0.05, 0.1, 0.5 and 1 mass%. The results show that increasing amounts of zinc ions in cement pastes lead to hydration retardation and reduce both the maximum temperature and the maximum heat flow due to the retarding effect of zinc. The newly formed compounds during
hydration were identified by X-ray diffraction method.",
  address="Springer",
  chapter="151390",
  doi="10.1007/s10973-017-6815-1",
  howpublished="print",
  institution="Springer",
  number="133",
  year="2018",
  month="july",
  pages="27--40",
  publisher="Springer",
  type="journal article in Web of Science"
}