3D Computational Simulation of Calcium Leaching in Cement Matrices
- Gaitero Redondo, Juan José
- Dolado, J.S.
- Neuen, C.
- Heber, F.
- Koenders, E. A.B.
ISSN: 0465-2746
Argitalpen urtea: 2014
Alea: 64
Zenbakia: 316
Mota: Artikulua
Beste argitalpen batzuk: Materiales de construcción
Laburpena
Calcium leaching is a degradation process consisting in progressive dissolution of the cement paste by migration of calcium atoms to the aggressive solution. It is therefore, a complex phenomenon involving several phases and dissolution and diffusion processes simultaneously. Along this work, a new computational scheme for the simulation of the degradation process in three dimensions was developed and tested. The toolkit was used to simulate accelerated calcium leaching by a 6M ammonium nitrate solution in cement matrices. The obtained outputs were the three dimensional representation of the matrix and the physicochemical properties of individual phases as a consequence of the degradation process. This not only makes it possible to study the evolution of such properties as a function of time but also as a function of the position within the matrix. The obtained results are in good agreement with experimental values of the elastic modulus in degraded and undegraded samples.
Finantzaketari buruzko informazioa
Finantzatzaile
-
Seventh Framework Programme
European Union
- 214030
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