R&D result detail

Original Title

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

English Title

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

Type

WoS Article

Original Abstract

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.

English abstract

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.

Keywords

Ternary system, Portland cement, metakaolin, blast-furnace slag, hydration

Key words in English

Ternary system, Portland cement, metakaolin, blast-furnace slag, hydration

Authors

BOHÁČ, M.; PALOU, M.; NOVOTNÝ, R.; MÁSILKO, J.; VŠIANSKÝ, D.; STANĚK, T.

RIV year

2015

Released

04.05.2014

Publisher

Elsevier

ISBN

0950-0618

Periodical

Construction and Building Materials

Volume

2014

Number

64

State

United Kingdom of Great Britain and Northern Ireland

Pages from

333

Pages to

341

Pages count

9

Full text in the Digital Library

http://hdl.handle.net/

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",
  journal="Construction and Building Materials",
  year="2014",
  volume="2014",
  number="64",
  pages="333--341",
  doi="10.1016/j.conbuildmat.2014.04.018",
  issn="0950-0618"
}