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Journal articles
The validity of the formation factor concept from through-out diffusion tests on Portland cement mortars
Abstract : The diffusion coefficients of ions and radionuclides in cementitious materials are the basic parameters to evaluate the state of the degradation of structures. In this article, three different tracers (two ions, and a radionuclide) were tested on the same formulations of mortars (sand volume fractions from 0 to 60 per cent) in terms of the through-out diffusion, to determine the effective diffusion coefficients of each tracer and each formulation. The aim of this study is to prove the validity of the formation factor equation relating the effective diffusivity of a tracer in cementitious material to its diffusion coefficient in pure water. This result is extremely interesting because once the geometric formation factor of a material is known, it is possible to determine the values of the effective diffusion coefficients of any other diffusing species in this material.
https://hal-cea.archives-ouvertes.fr/cea-02386098
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Submitted on : Friday, November 29, 2019 - 10:49:10 AM
Last modification on : Tuesday, April 28, 2020 - 11:28:14 AM
Contributor : Amplexor Amplexor Connect in order to contact the contributor
Submitted on : Friday, November 29, 2019 - 10:49:10 AM
Last modification on : Tuesday, April 28, 2020 - 11:28:14 AM