Nowy model opisujacy zmiany stosunku Ca/Si w C-S-H ze zmianami stężenia CaO w roztworze

• Autorzy: Nonat A. , Courault A. Ch. , Damidot D.

Warianty tytułu

EN

A new model describing the variation of C-S-H Ca/Si ratio with lime concentration in solution

• Języki publikacji: EN PL

Abstrakty

EN

A thermodynamic model built on the equilibrium solubility of one C-S-H of fixed stoichiometry and on surface equilibria which describes experimentally observed changes: evolution of silicate chain length, introduction of calcium in the interlayer and inversion of surface charge has been proposed. Equilibrium constants have been adjusted, taking into account the evolution of silicate chain length, surface charge of C-S-H, concentration at equilibrium and Ca/Si ratio of C-S-H, in order to reproduce experimental results.

PL

Zaproponowany został termodynamiczny model zbudowany na rozpuszczalności równowagowej jednego z C-S-H o ustalonej stechiometrii i na równowagach powierzchniowych, który opisuje obserwowane doświadczalnie zmiany: zwiększania się długości łańcuchów krzemianowych, wprowadzania wapnia do przestrzeni międzywarstwowej i inwersję ładunku powierzchniowego. Dopasowane zostały stałe równowagi, przy uwzględnieniu zwiększenia się długości łańcuchów krzemianowych, ładunku powierzchniowego C-S-H, stężenia w stanie równowagi i stosunku Ca/Si w C-S-H, by odtworzyć wyniki doświadczalne.

Słowa kluczowe

PL

zaczyn cementowy; C-S-H

• Wydawca: Fundacja Cement, Wapno, Beton
• Czasopismo: Cement Wapno Beton
• Rocznik: 2001
• Tom: R. 6/68, nr 5
• Strony: 184--191
• Opis fizyczny: Bibliogr. 28 poz., il., tab.

Twórcy

autor

Nonat A.

• Universite de Bourgogne, Laboratorie de Recherche sur la Reactivite des Solides

autor

Courault A. Ch.

• Universite de Bourgogne, Laboratorie de Recherche sur la Reactivite des Solides

autor

Damidot D.

• Universite de Bourgogne, Laboratorie de Recherche sur la Reactivite des Solides

Bibliografia

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