Detail publikace

The synthesis and characterization of an expansive admixture for M-type cements I. The influence of free CaO to the formation of ettringite

OPRAVIL, T. PTÁČEK, P. ŠOUKAL, F. HAVLICA, J. BRANDŠTETR, J.

Originální název

The synthesis and characterization of an expansive admixture for M-type cements I. The influence of free CaO to the formation of ettringite

Anglický název

The synthesis and characterization of an expansive admixture for M-type cements I. The influence of free CaO to the formation of ettringite

Jazyk

en

Originální abstrakt

The hydration process of expansive admixtures for M-type of expansive or shrinkage compensation cements was studied by thermal analysis supplemented by infrared spectroscopy and X-ray diffraction. The main attention was focused on ettringite formation and on the influence of lime content upon the process. The behaviour of expansive admixture during hydration is significantly affected by the content of lime. The increasing content of lime slows down the rate of ettringite formation and supports the formation of monosulphate (AFm phase) that can be transformed afterwards into ettringite during hardening process. This process may produce better expansion effect because of better transfer of expansion stress after the setting of the paste

Anglický abstrakt

The hydration process of expansive admixtures for M-type of expansive or shrinkage compensation cements was studied by thermal analysis supplemented by infrared spectroscopy and X-ray diffraction. The main attention was focused on ettringite formation and on the influence of lime content upon the process. The behaviour of expansive admixture during hydration is significantly affected by the content of lime. The increasing content of lime slows down the rate of ettringite formation and supports the formation of monosulphate (AFm phase) that can be transformed afterwards into ettringite during hardening process. This process may produce better expansion effect because of better transfer of expansion stress after the setting of the paste

Dokumenty

BibTex


@article{BUT95628,
  author="Tomáš {Opravil} and Petr {Ptáček} and František {Šoukal} and Jaromír {Havlica} and Jiří {Brandštetr}",
  title="The synthesis and characterization of an expansive admixture for M-type cements I. The influence of free CaO to the formation of ettringite",
  annote="The hydration process of expansive admixtures for M-type of expansive or shrinkage compensation cements was studied by thermal analysis supplemented by infrared spectroscopy and X-ray diffraction. The main attention was focused on ettringite formation and on the influence of lime content upon the process. The behaviour of expansive admixture during hydration is significantly affected by the content of lime. The increasing content of lime slows down the rate of ettringite formation and supports the formation of monosulphate (AFm phase) that can be transformed afterwards into ettringite during hardening process. This process may produce better expansion effect because of better transfer of expansion stress after the setting of the paste",
  address="Springer Netherlands",
  chapter="95628",
  institution="Springer Netherlands",
  number="7",
  volume="2012",
  year="2012",
  month="july",
  pages="1--10",
  publisher="Springer Netherlands",
  type="journal article - other"
}