THERMODYNAMIC AND GEOCHEMICAL MODELING OF THE ALTERATION OF 2 CEMENT MATRICES

被引：19

作者：

VIEILLARD, P

RASSINEUX, F

机构：

[1] Laboratoire de Pétrologie de la surface, Université de Poitiers, Poitiers, 86000

[2] Société ERM, Civaux, 86320, Place de l'église

来源：

APPLIED GEOCHEMISTRY | 1992年 / 7卷

关键词：

D O I：

10.1016/S0883-2927(09)80068-1

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The alteration of cement based materials is a phenomenon of great importance for various radwaste disposal problems, such as the durability of low level waste matrices or engineered barriers. Our approach to the durability of cement is developed along two lines of research: (1) a detailed study of solid-solution interactions by leach tests carried out with two different cement matrices (based on an ordinary Portland cement and a fly-ash cement). (2) A thermodynamic control and modelling of the alteration processes. An important part of this study has been the selection and the calculation of reliable thermodynamic data for the different compounds constituting such materials. The predictions of geochemical modelling are compared with results of alteration experiments. Fairly good agreement between the geochemical model and experiment is obtained.

引用

页码：125 / 136

页数：12

共 31 条

[1]

Atkinson A., The time dependence of pH within a repository for radioactive waste disposal, AERE Rept. R-11777, (1985)

[2]

Aurousseau P., Bourrie G., Curmi P., Organisation, minéralogie et dynamique de l'aluminium dans les sols acides et podzoliques en climat tempéré, Podzols et Podzolisation, (1987)

[3]

Calleja J., Durabilité, Proc. Ith Congr. Int. Chim. Cem., Paris, 3, pp. 1-50, (1980)

[4]

Cheverry C., Contribution à l'étude pédologique des polders du lac Tchad. Dynamique des sels en milieu continental sub-aride, dans les sédiments argileux et organiques, Thèse Sci., (1974)

[5]

Dron R., Mécanisme de la prise du laitier granulé sous activation alcaline, Rapport de Rech, (1974)

[6]

Fritz B., Etude thermodynamique et simulation des réactions entre minéraux et solutions. Application à la géochimie des altérations et des eaux continentales, Sci. Géol. Mém. Strasbourg, (1975)

[7]

Fritz B., Etude thermodynamique et modélisation des réactions hydrothermales et diagénétiques, Sa. Géol. Mém. Strasbourg, (1981)

[8]

Glasser F.P., MacPhee D.E., Lachowski E.E., Solubility modelling of cements: implications for radioactive waste immobilisation, Mater. Res. Soc. Symp. Proc. Xth, 84, pp. 331-341, (1987)

[9]

Glasser F.P., MacPhee D.E., Lachowski E.E., Modelling approach to the prediction of equilibrium phase distribution in slag-cement blends and their solubility properties, Mater. Res. Soc. Symp. Proc. Xlth, 85, pp. 1-10, (1988)

[10]

Helgeson H.C., Delany I.M., Nesbitt H.W., Bird D.K., Summary and critique of the thermodynamic properties of rock forming minerals, Am. J. Sci., 278 A, pp. 1-229, (1978)

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