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| 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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Minerbe, Marielle Gueguen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2018Evolution of hemp concrete properties exposed to different environments
- 2018Modelling of the sulfuric acid attack on different types of cementitious materialscitations
- 2017A multi-scale analysis of hemp-based insulation materials
- 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
- 2016Abiotic interaction between hydrogen sulphide and cementitious materialscitations
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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.