Detail publikace

Investigation on early hydration of ternary Portland cement-blast-furnace slag-metakaolin blends

Originální název

Investigation on early hydration of ternary Portland cement-blast-furnace slag-metakaolin blends

Anglický název

Investigation on early hydration of ternary Portland cement-blast-furnace slag-metakaolin blends

Jazyk

en

Originální abstrakt

The paper investigates the hydration of ternary blends comprising Portland cement, blast-furnace slag and metakaolin. The isothermal calorimetry and in situ X-ray diffraction was used to evaluate the effect of metakaolin and blast-furnace slag on the early hydration of blends. XRD, DTA and SEM were used to analyze the hardened paste after 1 month of hydration. Metakaolin influences significantly the kinetics, mechanism and products of hydration at initial period of hydration causing the rapid formation of ettringite. Hemicarbonate aluminate hydrate is formed as a product of ettringite conversion due to the presence of reactive calcite in Portland cement.

Anglický abstrakt

The paper investigates the hydration of ternary blends comprising Portland cement, blast-furnace slag and metakaolin. The isothermal calorimetry and in situ X-ray diffraction was used to evaluate the effect of metakaolin and blast-furnace slag on the early hydration of blends. XRD, DTA and SEM were used to analyze the hardened paste after 1 month of hydration. Metakaolin influences significantly the kinetics, mechanism and products of hydration at initial period of hydration causing the rapid formation of ettringite. Hemicarbonate aluminate hydrate is formed as a product of ettringite conversion due to the presence of reactive calcite in Portland cement.

BibTex


@article{BUT107462,
  author="Martin {Boháč} and Martin {Palou} and Radoslav {Novotný} and Jiří {Másilko} and Dalibor {Všianský} and Theodor {Staněk}",
  title="Investigation on early hydration of ternary Portland cement-blast-furnace slag-metakaolin blends",
  annote="The paper investigates the hydration of ternary blends comprising Portland cement, blast-furnace slag and metakaolin. The isothermal calorimetry and in situ X-ray diffraction was used to evaluate the effect of metakaolin and blast-furnace slag on the early hydration of blends. XRD, DTA and SEM were used to analyze the hardened paste after 1 month of hydration. Metakaolin influences significantly the kinetics, mechanism and products of hydration at initial period of hydration causing the rapid formation of ettringite. Hemicarbonate aluminate hydrate is formed as a product of ettringite conversion due to the presence of reactive calcite in Portland cement.",
  address="Elsevier",
  chapter="107462",
  doi="10.1016/j.conbuildmat.2014.04.018",
  institution="Elsevier",
  number="64",
  volume="2014",
  year="2014",
  month="may",
  pages="333--341",
  publisher="Elsevier",
  type="journal article in Web of Science"
}