| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Dangla, Patrick
Université Gustave Eiffel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2022Modeling the sulfate attack induced expansion of cementitious materials based on interface-controlled crystal growth mechanismscitations
- 2022Modeling the sulfate attack induced expansion of cementitious materials based on interface-controlled crystal growth mechanismscitations
- 2020Locating ettringite due to DEF at the pore scale of cement paste by heat-based dissolution testscitations
- 2019Pore size analyses of cement paste exposed to external sulfate attack and delayed ettringite formationcitations
- 2018Modelling of the sulfuric acid attack on different types of cementitious materialscitations
- 2018Modelling of the sulfuric acid attack on different types of cementitious materialscitations
- 2017Poromechanics VI: Proceedings of the Sixth Biot Conference on Poromechanics
- 2017Impact of cement composition on the adsorption of hydrogen sulphide and its subsequent oxidation onto cementitious material surfacescitations
- 2017Impact of cement composition on the adsorption of hydrogen sulphide and its subsequent oxidation onto cementitious material surfacescitations
- 2016Accelerated Biodeterioration Test for the Study of Cementitious Materials in Sewer Networks: Experimental and Modelingcitations
- 2016Accelerated Biodeterioration Test for the Study of Cementitious Materials in Sewer Networks: Experimental and Modelingcitations
- 2016Abiotic interaction between hydrogen sulphide and cementitious materialscitations
- 2016Abiotic interaction between hydrogen sulphide and cementitious materialscitations
- 2014Investigation of the carbonation mechanism of {CH} and C-S-H in terms of kinetics, microstructure changes and moisture propertiescitations
- 2013Degradation modelling of concrete submitted to sulfuric acid attackcitations
Places of action
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article
Modelling of the sulfuric acid attack on different types of cementitious materials
Abstract
A chemical-reactive transport model was used to simulate the sulfuric acid attack of cement pastes based on ordinary Portland cement (CEM I), blended Portland cements (CEM III, CEM IV, and CEM V), and calcium aluminate cement (CAC). This model accounts for the dissolution of cement hydrates (portlandite, C-S-H, hydrogarnet), and the precipitation of deterioration products (ettringite and gypsum). Moreover, diffusion of the aqueous species in the pore space in the material is considered. With this model, we can get the hydrate contents, the porosity, and the deterioration phase contents throughout a sulfuric acid attack. Two indicators are defined to predict the service life of the cementitious materials: the deterioration depth and the dissolved calcium content. These two indicators showed that calcium aluminate cement provide a better resistance to sulfuric acid attack than that of Portland cements. This better resistance is mainly due to the partial dissolution of CAC hydrate as opposed to the total dissolutions of CH and C-S-H.