Detail publikace

STUDY OF HYDRATION PRODUCTS IN THE MODEL SYSTEMS METAKAOLIN–LIME AND METAKAOLIN–LIME–GYPSUM

ŽEMLIČKA, M. KUZIELOVA, E. KULIFFAYOVÁ, M. TKACZ, J. PALOU, M.

Originální název

STUDY OF HYDRATION PRODUCTS IN THE MODEL SYSTEMS METAKAOLIN–LIME AND METAKAOLIN–LIME–GYPSUM

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Possible preferential formation of ettringite instead of required calcium silicate hydrate (CSH) and calcium aluminosilicate hydrate (CASH) phases when aluminosilicates were added to the blended cements was investigated on the model systems comprising of metakaolin, lime and gypsum. Compressive strength, microstructure and phase composition of the samples were evaluated after 7 days of curing at 50°C, using thermal analysis, X-ray diffraction techniques and scanning electronic microscopy. Samples prepared from equal amounts of metakaolin, lime and with more than 8 wt. % of gypsum, displayed the highest compressive strength values. Development of compressive strength was correlated with the formation of ettringite. Further rising of gypsum content resulted in the decrease of compressive strength, which is notable in the samples with a different metakaolin/lime ratio. Lower content of gypsum led to the preferential formation of portlandite, CSH and CASH. Calcite was detected in all the samples and its content declined with increasing amount of ettringite. In addition to calcite, carboaluminates were detected in complementary binary metakaolin - lime system. Tendency to carbonation declined with increasing content of metakaolin and eventuated in the highest compressive strength value for the samples with equal initial content of metakaolin and lime.

Klíčová slova

Blended cements, Metakaolin, Gypsum, Ettringite

Autoři

ŽEMLIČKA, M.; KUZIELOVA, E.; KULIFFAYOVÁ, M.; TKACZ, J.; PALOU, M.

Rok RIV

2015

Vydáno

19. 10. 2015

ISSN

0862-5468

Periodikum

Ceramics-Silikáty

Ročník

4

Číslo

59

Stát

Česká republika

Strany od

283

Strany do

291

Strany počet

9

URL

http://www.ceramics-silikaty.cz/2015/pdf/2015_04_283.pdf

BibTex

@article{BUT123351,
  author="Matúš {Žemlička} and Eva {Kuzielova} and Marta {Kuliffayová} and Jakub {Tkacz} and Martin {Palou}",
  title="STUDY OF HYDRATION PRODUCTS IN THE MODEL SYSTEMS METAKAOLIN–LIME AND METAKAOLIN–LIME–GYPSUM",
  journal="Ceramics-Silikáty",
  year="2015",
  volume="4",
  number="59",
  pages="283--291",
  issn="0862-5468",
  url="http://www.ceramics-silikaty.cz/2015/pdf/2015_04_283.pdf"
}