| People | Locations | Statistics |
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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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Pereira, Jm
École des Ponts ParisTech
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023Effects of microstructure on THM behaviour of geomaterialscitations
- 2023Effect of supercritical carbonation on porous structure and mechanical strength of cementitious materials modified with bacterial nanocellulosecitations
- 2023Water retention curve of clayey sands determined from pore structure by using various methodscitations
- 2023Pore changes in an illitic clay during one-dimensional compressioncitations
- 2022Cement with bacterial nanocellulose cured at reservoir temperature: Mechanical performance in the context of CO2 geological storagecitations
- 2021Impact of an SRA (hexylene glycol) on irreversible drying shrinkage and pore solution properties of cement pastescitations
- 2020Contactless probing of polycrystalline methane hydrate at pore scale suggests weaker tensile properties than thoughtcitations
- 2020CO2 geological storage: Microstructure and mechanical behavior of cement modified with a biopolymer after carbonationcitations
- 2018Fabric characterisation in transitional soilscitations
- 2017Numerical study of one-dimensional compression of granular materials. II. Elastic moduli, stresses, and microstructure.citations
- 2017Poromechanics VI: Proceedings of the Sixth Biot Conference on Poromechanics
- 2017Investigation into macroscopic and microscopic behaviors of wet granular soils using discrete element method and X-ray computed tomography
- 2015Internal states, stress-strain behavior and elasticity in oedometrically compressed model granular materials
Places of action
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article
CO2 geological storage: Microstructure and mechanical behavior of cement modified with a biopolymer after carbonation
Abstract
Large amounts of CO2 could be stored underground in deep rock reservoirs and could help reducing emissions into the environment. Carbon geo-storage technologies have several years in development and new techniques and materials are being studied to make this procedure more effective and less expensive. The risk of leakage from geological reservoirs to other rock formations or even towards the surface means that long-term behavior must be carefully studied. The carbonation of the cement used for sealing the wellbore may compromise the borehole integrity. In light of this problem, this work aims to analyze the poromechanical behavior of cement with and without a new additive in a CO2 environment. Bacterial nanocellulose is a biopolymer that modifies important cement properties such as compressive strength, thermal behavior and hydration degree. Two cement types were studied: class G cement and modified class G cement with bacterial nanocellulose. These samples were submitted to a supercritical CO2 environment (temperatures higher than 32 °C and pressures higher than 8 MPa) during 30 days. Mercury intrusion porosimetry and uniaxial compressive strength tests were performed on these samples to study the effect of carbonation. Both types of cement are affected after carbonation by reducing compressive strength and Young’s modulus (E), however, the strength of modified cement was reduced by 8%, while non-modified cement was reduced by 20%.