Xavier Bourbon
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View article: Innovative Ceramic-Based Solution for a Barrier in an EBS: Development, Mechanical Behaviour, and Ageing of a Tunnel Liner as a Test Case
Innovative Ceramic-Based Solution for a Barrier in an EBS: Development, Mechanical Behaviour, and Ageing of a Tunnel Liner as a Test Case Open
The concept of a safe geological repository for managing radioactive waste relies on a multi-barrier system comprising both the host rock and various engineered barriers, these latter being referred to as the engineered barrier system (EBS…
View article: Effect of cement water contacting an aged cementitious grout on the dissolution rates of inactive nuclear glass SON68
Effect of cement water contacting an aged cementitious grout on the dissolution rates of inactive nuclear glass SON68 Open
The long‐term behavior of high‐level radioactive waste glass depends on the mineralogical and geochemical interactions between the various components of the multibarrier system, under geological repository conditions. The present study foc…
View article: Evolution upon contact with water of a bentonite-cement backfilling grout: insights from laboratory and in situ mineralogical characteriza-tions and from geochemical modelling
Evolution upon contact with water of a bentonite-cement backfilling grout: insights from laboratory and in situ mineralogical characteriza-tions and from geochemical modelling Open
International audience
View article: Heterogeneous corrosion of carbon steel used for casing in deep geological radioactive waste repository in contact with claystone
Heterogeneous corrosion of carbon steel used for casing in deep geological radioactive waste repository in contact with claystone Open
International audience
View article: A MAS-NMR analysis of 29Si, 27Al and 1H on the temperature's impact on geopolymer grouts derived from argillite and metakaolin
A MAS-NMR analysis of 29Si, 27Al and 1H on the temperature's impact on geopolymer grouts derived from argillite and metakaolin Open
This study investigates how the curing temperature can enhance the reactivity of poorly reactive aluminosilicate source for geopolymer synthesis using a structural approach. The studied geopolymers are based on different aluminosilicate so…
View article: Durability of partially cured GFRP reinforcing bars in alkaline environments with or without sustained tensile load
Durability of partially cured GFRP reinforcing bars in alkaline environments with or without sustained tensile load Open
International audience
View article: Mineralogical and geochemical composition of a cementitious grout and its evolution during interaction with water
Mineralogical and geochemical composition of a cementitious grout and its evolution during interaction with water Open
In the present study, the chemical composition, mineralogy, and mechanisms of alteration of a cementitious grout based on a CEM III/C with addition of smectite, hydrotalcite, and silica fume, are studied using a combination of chemical and…
View article: Curing temperature’s effect on argillite-metakaolin based geopolymer grouts
Curing temperature’s effect on argillite-metakaolin based geopolymer grouts Open
This study concerns the project of high and intermediate level radioactive waste disposal (Cigéo project for Centre Industriel de stockage GEOlogique). Millions of tons of argillite will be excavated during the construction of the site. Th…
View article: Hydrogen production through aluminium corrosion in a cement‐based matrix
Hydrogen production through aluminium corrosion in a cement‐based matrix Open
In France, deep geological disposal is considered for the storage of high and intermediate‐level long‐lived radioactive wastes. For aluminium, the possibility to encapsulate the wastes in a cement‐based matrix is studied. However, cement b…
View article: The Use of Callovo-Oxfordian Argillite as a Raw Material for Portland Cement Clinker Production
The Use of Callovo-Oxfordian Argillite as a Raw Material for Portland Cement Clinker Production Open
Excavated soils and rocks are materials obtained in construction works that could represent an ecological issue if a durable and efficient reuse process is not set. The radioactive waste disposal planned by the French National Radioactive …
View article: Effects of potassium-silicate, sands and carbonates concentrations on metakaolin-based geopolymers for high-temperature applications
Effects of potassium-silicate, sands and carbonates concentrations on metakaolin-based geopolymers for high-temperature applications Open
International audience
View article: Mechanical properties and self-sensing ability of amorphous metallic fiber-reinforced concrete
Mechanical properties and self-sensing ability of amorphous metallic fiber-reinforced concrete Open
The aim of this research work is to develop a corrosion resistant fiber-reinforced concrete for radioactive waste disposal structures. In the case of precast concrete, the use of fibers is a solution to reduce the amount of steel reinforce…
View article: Deciphering mineralogical changes and carbonation development during hydration and ageing of a consolidated ternary blended cement paste
Deciphering mineralogical changes and carbonation development during hydration and ageing of a consolidated ternary blended cement paste Open
To understand the main properties of cement, a ubiquitous material, a sound description of its chemistry and mineralogy, including its reactivity in aggressive environments and its mechanical properties, is vital. In particular, the porosi…
View article: Experimental data for large reinforced concrete beam (RG)
Experimental data for large reinforced concrete beam (RG) Open
This dataset contains data collected in the french national project CEOS.fr (Comportement et Evaluation des Ouvrages, fissuration - retrait). Measurements focus on cracking phenomenon (crack widths and spacing) decorelated from thermomecha…
View article: Minerals paragenesis in hydrated cement paste seen by diffraction tomography
Minerals paragenesis in hydrated cement paste seen by diffraction tomography Open
International audience
View article: Passive corrosion of steel reinforcement in blended cement-based material in the context of nuclear waste disposal
Passive corrosion of steel reinforcement in blended cement-based material in the context of nuclear waste disposal Open
An experimental campaign was carried out to study the passivity of steel embedded in blended cement paste. Mockup samples made of steel coupons (milled or pre-corroded) embedded in cement paste were tested under controlled relative humidit…
View article: Experimental study of corrosion-induced degradation of reinforced concrete elements
Experimental study of corrosion-induced degradation of reinforced concrete elements Open
Corrosion of steel reinforcement is the main cause of damage for reinforced concrete structures. Iron oxides produced during the corrosion process can induce concrete cracking, loss of adhesion at the steel-concrete interface, loss of rein…