3D computational simulation of calcium leaching in cement matrices

J. J. Gaitero; J. S. Dolado; C. Neuen; F. Heber; E. A.B. Koenders

doi:10.3989/mc.2014.08813

3D computational simulation of calcium leaching in cement matrices

J. J. Gaitero, J. S. Dolado, C. Neuen, F. Heber, E. A.B. Koenders

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

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.

Original language	English
Journal	Materiales de Construccion
Volume	64
Issue number	316
DOIs	https://doi.org/10.3989/mc.2014.08813
Publication status	Published - 1 Oct 2014

Keywords

Cement paste
Durability
Microstructure
Modelization
Transport properties

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10.3989/mc.2014.08813

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title = "3D computational simulation of calcium leaching in cement matrices",

abstract = "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.",

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author = "Gaitero, {J. J.} and Dolado, {J. S.} and C. Neuen and F. Heber and Koenders, {E. A.B.}",

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T1 - 3D computational simulation of calcium leaching in cement matrices

AU - Gaitero, J. J.

AU - Dolado, J. S.

AU - Neuen, C.

AU - Heber, F.

AU - Koenders, E. A.B.

PY - 2014/10/1

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AB - 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.

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KW - Durability

KW - Microstructure

KW - Modelization

KW - Transport properties

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3D computational simulation of calcium leaching in cement matrices

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Keywords

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