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Evolution microstructurale des composites du systeme ciment alumineux-granulat calcaire. I. Mode de propagation de la fissure
AbstractThe transitional layer, formed at the interface between a calcareous aggregate and an aluminous cement paste, changes versus the hydration time and leads to a zone rich in hydrated carboaluminate, which is formed by epitaxic growth on calcium carbonate. This phenomenon is responsible for a noticeable change in the crack propagation process in the solid. In the system calcium aluminate - siliceous aggregates, the process is always intergranular. In the case of aluminate - calcareous aggregate it is intergranular at the beginning of hydration and becomes transgranular after some months. Then the crack propagation concerns the carbonate grain itself but neither the surrounding zone nor the interface aggregate - transitional zone.
Evolution microstructurale des composites du systeme ciment alumineux-granulat calcaire. I. Mode de propagation de la fissure
AbstractThe transitional layer, formed at the interface between a calcareous aggregate and an aluminous cement paste, changes versus the hydration time and leads to a zone rich in hydrated carboaluminate, which is formed by epitaxic growth on calcium carbonate. This phenomenon is responsible for a noticeable change in the crack propagation process in the solid. In the system calcium aluminate - siliceous aggregates, the process is always intergranular. In the case of aluminate - calcareous aggregate it is intergranular at the beginning of hydration and becomes transgranular after some months. Then the crack propagation concerns the carbonate grain itself but neither the surrounding zone nor the interface aggregate - transitional zone.
Evolution microstructurale des composites du systeme ciment alumineux-granulat calcaire. I. Mode de propagation de la fissure
Bachiorrini, A. (Autor:in) / Murat, M. (Autor:in)
Cement and Concrete Research ; 17 ; 242-248
03.11.1986
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Französisch
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