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Y. El Mendili
COMUE Normandie Université – Laboratoire ESITC, 1 Rue Pierre et Marie Curie, 14610 Épron, France

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Research article
Published: 28 July 2021 in Matériaux & Techniques
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Corrosion of steel constitutes a major preoccupation in the field of civil engineering and the building sector. In this paper, we investigated the electrochemical behavior of two steel specimens with different forms (latched steel and smooth steel) in a 3 wt.% NaCl solution. For this purpose, we studied the steel samples by linear polarization, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The surface morphologies of the substrates were examined by scanning electron microscopy coupled with energy diffraction spectroscopy (SEM/EDS). Results of linear polarization, Tafel polarization curves and EIS show that latched steel (LS) is more susceptible to corrosion than smooth steel (SS) in saline solution. Gravimetric and SEM/EDS analysis after 10 days of immersion confirmed the results obtained by electrochemical methods. All of our results are in agreement and demonstrate that the sample form plays a key role in corrosion resistance.

ACS Style

Laidi Babouri; Cheikh Mokrani; Yassine El Mendili. Effect of the sample form on the corrosion behavior of steels for concrete in 3% NaCl medium. Matériaux & Techniques 2021, 109, 201 .

AMA Style

Laidi Babouri, Cheikh Mokrani, Yassine El Mendili. Effect of the sample form on the corrosion behavior of steels for concrete in 3% NaCl medium. Matériaux & Techniques. 2021; 109 (2):201.

Chicago/Turabian Style

Laidi Babouri; Cheikh Mokrani; Yassine El Mendili. 2021. "Effect of the sample form on the corrosion behavior of steels for concrete in 3% NaCl medium." Matériaux & Techniques 109, no. 2: 201.

Journal article
Published: 07 June 2021 in Sustainability
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The reactivity effect of calcium carbonate, present in ground oyster shells and limestone filler, on the formation of carboaluminate phases in ground granulated blast furnace slag blended cement pastes was reported in this paper. Six different binary and ternary blended cement pastes were prepared using ground granulated blast furnace slag, ground oyster shells and limestone filler with different replacement levels (from 5 to 35%). The carboaluminate formation was assessed and quantified directly using X-ray diffraction (XRD), and indirectly by following the aluminate phase’s reaction (heat flow) and consumed calcium carbonate using Isothermal Calorimetry (IC) and Thermogravimetric Analysis (TGA), respectively. Further, the overall reaction degree calculated based on TGA results and the compressive strength were determined to support the findings obtained. The results revealed that the calcium carbonate present in ground oyster shells is more reactive when compared to that present in limestone filler, where more formed hemi- and monocarboaluminate phases were observed in mixtures containing ground oyster shells. An enhancement in compressive strength and overall reaction degree was observed by adding 5% ground oyster shells as cement replacement.

ACS Style

Walid Deboucha; Nassim Sebaibi; Yassine El Mendili; Aurélie Fabien; U. Alengaram; Nordine Leklou; Mahmoud Hamdadou; Alexandra Bourdot; Stéphanie Gascoin. Reactivity Effect of Calcium Carbonate on the Formation of Carboaluminate Phases in Ground Granulated Blast Furnace Slag Blended Cements. Sustainability 2021, 13, 6504 .

AMA Style

Walid Deboucha, Nassim Sebaibi, Yassine El Mendili, Aurélie Fabien, U. Alengaram, Nordine Leklou, Mahmoud Hamdadou, Alexandra Bourdot, Stéphanie Gascoin. Reactivity Effect of Calcium Carbonate on the Formation of Carboaluminate Phases in Ground Granulated Blast Furnace Slag Blended Cements. Sustainability. 2021; 13 (11):6504.

Chicago/Turabian Style

Walid Deboucha; Nassim Sebaibi; Yassine El Mendili; Aurélie Fabien; U. Alengaram; Nordine Leklou; Mahmoud Hamdadou; Alexandra Bourdot; Stéphanie Gascoin. 2021. "Reactivity Effect of Calcium Carbonate on the Formation of Carboaluminate Phases in Ground Granulated Blast Furnace Slag Blended Cements." Sustainability 13, no. 11: 6504.

Journal article
Published: 29 October 2020 in European Journal of Environmental and Civil Engineering
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ACS Style

Laidi Babouri; Yasmina Biskri; Fouzia Khadraoui; Yassine El Mendili. Mechanical performance and corrosion resistance of reinforced concrete with marble waste. European Journal of Environmental and Civil Engineering 2020, 1 -18.

AMA Style

Laidi Babouri, Yasmina Biskri, Fouzia Khadraoui, Yassine El Mendili. Mechanical performance and corrosion resistance of reinforced concrete with marble waste. European Journal of Environmental and Civil Engineering. 2020; ():1-18.

Chicago/Turabian Style

Laidi Babouri; Yasmina Biskri; Fouzia Khadraoui; Yassine El Mendili. 2020. "Mechanical performance and corrosion resistance of reinforced concrete with marble waste." European Journal of Environmental and Civil Engineering , no. : 1-18.

Research article
Published: 08 September 2020 in European Journal of Environmental and Civil Engineering
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We investigate the mechanical characterisation of mortars incorporating ferronickel slags (FNS) as partial substitution for cement. The studied slags come from the ferronickel production in New Caledonia. The microstructural characterisation shows that these slags are polycrystalline heterogeneous material mainly composed of forsterite, quartz and enstatite in addition to silica glass. Cement is replaced by up to 20 wt.% of ferronickel slags in the mortars. This upper level of substitution is achieved without compromising mortar’s strengths. For all mixes, the maximum compressive and flexural strengths at all curing ages is obtained with a 5 wt.% replacement of cement by ferronickel slags. The larger effectiveness of FNS is attributed to its larger silica content, which increases the polymerisation degree of the silica chains in the calcium silicate hydrate (C-S-H) structure. Slag recycling reduces the storage time, waste management and environmental impact. It significantly lowers costs related to metallurgical processing. Slag substitution for cement, also lowers the carbon footprint.

ACS Style

Manal Bouasria; Laidi Babouri; Fouzia Khadraoui; Daniel Chateigner; Stéphanie Gascoin; Valérie Pralong; Mohammed-Hichem Benzaama; Beate Orberger; Yassine El Mendili. Insight into the partial replacement of cement by ferronickel slags from New Caledonia. European Journal of Environmental and Civil Engineering 2020, 1 -19.

AMA Style

Manal Bouasria, Laidi Babouri, Fouzia Khadraoui, Daniel Chateigner, Stéphanie Gascoin, Valérie Pralong, Mohammed-Hichem Benzaama, Beate Orberger, Yassine El Mendili. Insight into the partial replacement of cement by ferronickel slags from New Caledonia. European Journal of Environmental and Civil Engineering. 2020; ():1-19.

Chicago/Turabian Style

Manal Bouasria; Laidi Babouri; Fouzia Khadraoui; Daniel Chateigner; Stéphanie Gascoin; Valérie Pralong; Mohammed-Hichem Benzaama; Beate Orberger; Yassine El Mendili. 2020. "Insight into the partial replacement of cement by ferronickel slags from New Caledonia." European Journal of Environmental and Civil Engineering , no. : 1-19.

Journal article
Published: 18 June 2020 in Journal of Building Engineering
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Environmental impacts of building materials can be achieved by reducing the amount of cement in cementitious composites, specifically when incorporating wastes as partial replacement of Portland cement. In this work we substitute cement by shell by-products and Ferronickel Slags (FNS) while keeping interesting specific properties. FNS associated to Crepidula fornicata shells (CR) are good candidates to replace part of the Portland cement as they have appropriate physicochemical properties, and are available at high abundance. The effect of the association of FNS and CR on the mechanical properties of mortar is investigated. Microstructural characterization of these additives are carried out using Scanning Electron Microscopy, X-Ray diffraction and Raman spectroscopy. Formulated mortars contain different mixes of FNS-CR and Portland cement. Specific surface area, workability and setting times of fresh mortars are studied. The mechanical properties are investigated using 3-point bending and compressive tests for curing periods ranging from 2 to 28 days. In the fresh state, the replacement of cement by up to 20 wt.% of FNS-CR does not significantly affect mortar properties. However, at the hardened state, the setting time is increased using FNS-CR. With up to 20% wt.% of FNS-CR incorporation, the mechanical properties are similar or even slightly larger than that of the control mortar.

ACS Style

Manal Bouasria; Fouzia Khadraoui; Mohammed-Hichem Benzaama; Karim Touati; Daniel Chateigner; Stéphanie Gascoin; Valérie Pralong; Beate Orberger; Laidi Babouri; Yassine El Mendili. Partial substitution of cement by the association of Ferronickel slags and Crepidula fornicata shells. Journal of Building Engineering 2020, 33, 101587 .

AMA Style

Manal Bouasria, Fouzia Khadraoui, Mohammed-Hichem Benzaama, Karim Touati, Daniel Chateigner, Stéphanie Gascoin, Valérie Pralong, Beate Orberger, Laidi Babouri, Yassine El Mendili. Partial substitution of cement by the association of Ferronickel slags and Crepidula fornicata shells. Journal of Building Engineering. 2020; 33 ():101587.

Chicago/Turabian Style

Manal Bouasria; Fouzia Khadraoui; Mohammed-Hichem Benzaama; Karim Touati; Daniel Chateigner; Stéphanie Gascoin; Valérie Pralong; Beate Orberger; Laidi Babouri; Yassine El Mendili. 2020. "Partial substitution of cement by the association of Ferronickel slags and Crepidula fornicata shells." Journal of Building Engineering 33, no. : 101587.

Journal article
Published: 05 May 2020 in Scientific Reports
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Different polytypes of SiC are described and predicted in literature. Here, we report the first occurrence of an orthorhombic 6O-SiC polytype as rock-forming mineral in the nickel laterite mine of Tiebaghi (New Caledonia). This new class of SiC crystallizes in the space group Cmc21 with 12 atoms per unit cell [a = 3.0778(6) Å, b = 5.335(2) Å, c = 15.1219(6) Å, α = 90°, β = 90°, γ = 120°]. The density of 6O-SiC is about 3.22 g/cm3 and the calculated indirect bandgap at room temperature of 3.56 eV is identical to 6H-SiC. Our results suggest that 6O-SiC is the intermediate state in the wurtzite to rocksalt transformation of 6H-SiC.

ACS Style

Yassine El Mendili; Beate Orberger; Daniel Chateigner; Jean-François Bardeau; Stéphanie Gascoin; Sébastien Petit; Olivier Perez; Fouzia Khadraoui. Insight into the structural, elastic and electronic properties of a new orthorhombic 6O-SiC polytype. Scientific Reports 2020, 10, 1 -8.

AMA Style

Yassine El Mendili, Beate Orberger, Daniel Chateigner, Jean-François Bardeau, Stéphanie Gascoin, Sébastien Petit, Olivier Perez, Fouzia Khadraoui. Insight into the structural, elastic and electronic properties of a new orthorhombic 6O-SiC polytype. Scientific Reports. 2020; 10 (1):1-8.

Chicago/Turabian Style

Yassine El Mendili; Beate Orberger; Daniel Chateigner; Jean-François Bardeau; Stéphanie Gascoin; Sébastien Petit; Olivier Perez; Fouzia Khadraoui. 2020. "Insight into the structural, elastic and electronic properties of a new orthorhombic 6O-SiC polytype." Scientific Reports 10, no. 1: 1-8.

Journal article
Published: 01 October 2019 in Applied Geochemistry
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The leaching of 29Si-doped SON68 French nuclear waste glass was investigated in Callovo-Oxfordian (COx) water in the presence of P235GH stainless steel and COx argillite. Experiments were carried out to understand the effect of near-field materials on the rate of glass dissolution and the migration of 29Si in the claystone core. Tests were performed by using percolation cells containing glass and stainless steel sandwiched between two clay cores in two different combinations: glass/clay at 50 and 90 °C, and glass/steel/clay/at 90 °C. COx water was injected through the percolation cells at 120 bars (solution flow rate 0.05–0.38 mL d−1). Results showed that the presence of steel did not enhance the dissolution rate of the glass despite the retention of 29Si released from the glass on the corrosion products. The glass dissolution rate up to 17 months tends towards 10−4 and 10−3 g m−2 d−1 at 50 and 90 °C, respectively. The glass alteration in the presence of clay leads to the formation of calcite and Mg-silicates at 50 °C in addition to apatite and powellite at 90 °C. The main steel corrosion products were siderite, magnetite, ferrosilicates, pyrite, pyrrhotite, troilite and mackinawite. MgSO4 and CaSO4 were also identified in the presence of steel.

ACS Style

Rachid Bouakkaz; Abdesselam Abdelouas; Yassine El Mendili; Karine David; Bernd Grambow. Alteration of 29Si-doped SON68 borosilicate nuclear waste glass in the presence of near field materials. Applied Geochemistry 2019, 111, 104436 .

AMA Style

Rachid Bouakkaz, Abdesselam Abdelouas, Yassine El Mendili, Karine David, Bernd Grambow. Alteration of 29Si-doped SON68 borosilicate nuclear waste glass in the presence of near field materials. Applied Geochemistry. 2019; 111 ():104436.

Chicago/Turabian Style

Rachid Bouakkaz; Abdesselam Abdelouas; Yassine El Mendili; Karine David; Bernd Grambow. 2019. "Alteration of 29Si-doped SON68 borosilicate nuclear waste glass in the presence of near field materials." Applied Geochemistry 111, no. : 104436.

Article
Published: 29 August 2019 in Journal of the American Ceramic Society
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3D quantitative image analysis from synchrotron X‐ray microcomputed tomography, indicated a coarsening of the microstructure of magnesium potassium phosphate cements driven by crystallization of K‐struvite from the first amorphous product. Porosity and pore surface area increased because of the progressive build‐up of a network of elongated/tabular crystal domains, with density higher than the amorphous. The known increase in strength with time is thought to occur thanks to the overwhelming contribution of a developing interlocked lath‐shaped microstructure. Combined X‐ray and neutron diffraction texture analysis indicated that at least a fraction of K‐struvite nucleates at the surface of MgO grains, suggesting the intervention of more than one crystallization mechanism. The detected weak texture, compatible with a nearly random orientation of crystallites, and the isotropic pore fabric are beneficial with respect to crack propagation.

ACS Style

Alberto Viani; Gabriele Lanzafame; Daniel Chateigner; Yassine El Mendili; Konstantinos Sotiriadis; Lucia Mancini; Michele Zucali; Bachir Ouladdiaf. Microstructural evolution and texture analysis of magnesium phosphate cement. Journal of the American Ceramic Society 2019, 103, 1414 -1424.

AMA Style

Alberto Viani, Gabriele Lanzafame, Daniel Chateigner, Yassine El Mendili, Konstantinos Sotiriadis, Lucia Mancini, Michele Zucali, Bachir Ouladdiaf. Microstructural evolution and texture analysis of magnesium phosphate cement. Journal of the American Ceramic Society. 2019; 103 (2):1414-1424.

Chicago/Turabian Style

Alberto Viani; Gabriele Lanzafame; Daniel Chateigner; Yassine El Mendili; Konstantinos Sotiriadis; Lucia Mancini; Michele Zucali; Bachir Ouladdiaf. 2019. "Microstructural evolution and texture analysis of magnesium phosphate cement." Journal of the American Ceramic Society 103, no. 2: 1414-1424.

Journal article
Published: 08 August 2019 in ACS Earth and Space Chemistry
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ACS Style

Yassine El Mendili; Daniel Chateigner; Beate Orberger; Stéphanie Gascoin; Jean-François Bardeau; Sébastien Petit; Cédric Duée; Monique Le Guen; Henry Pilliere. Combined XRF, XRD, SEM-EDS, and Raman Analyses on Serpentinized Harzburgite (Nickel Laterite Mine, New Caledonia): Implications for Exploration and Geometallurgy. ACS Earth and Space Chemistry 2019, 3, 2237 -2249.

AMA Style

Yassine El Mendili, Daniel Chateigner, Beate Orberger, Stéphanie Gascoin, Jean-François Bardeau, Sébastien Petit, Cédric Duée, Monique Le Guen, Henry Pilliere. Combined XRF, XRD, SEM-EDS, and Raman Analyses on Serpentinized Harzburgite (Nickel Laterite Mine, New Caledonia): Implications for Exploration and Geometallurgy. ACS Earth and Space Chemistry. 2019; 3 (10):2237-2249.

Chicago/Turabian Style

Yassine El Mendili; Daniel Chateigner; Beate Orberger; Stéphanie Gascoin; Jean-François Bardeau; Sébastien Petit; Cédric Duée; Monique Le Guen; Henry Pilliere. 2019. "Combined XRF, XRD, SEM-EDS, and Raman Analyses on Serpentinized Harzburgite (Nickel Laterite Mine, New Caledonia): Implications for Exploration and Geometallurgy." ACS Earth and Space Chemistry 3, no. 10: 2237-2249.

Journal article
Published: 28 May 2019 in Journal of Applied Crystallography
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Detailed crystallographic information provided by X-ray diffraction (XRD) is complementary to molecular information provided by Raman spectroscopy. Accordingly, the combined use of these techniques allows the identification of an unknown compound without ambiguity. However, a full combination of Raman and XRD results requires an appropriate and reliable reference database with complete information. This is already available for XRD. The main objective of this paper is to introduce and describe the recently developed Raman Open Database (ROD, http://solsa.crystallography.net/rod). It comprises a collection of high-quality uncorrected Raman spectra. The novelty of this database is its interconnectedness with other open databases like the Crystallography Open Database (http://www.crystallography.net/cod and Theoretical Crystallography Open Database (http://www.crystallography.net/tcod/). The syntax adopted to format entries in the ROD is based on the worldwide recognized and used CIF format, which offers a simple way for data exchange, writing and description. ROD also uses JCAMP-DX files as an alternative format for submitted spectra. JCAMP-DX files are compatible to varying degrees with most commercial Raman software and can be read and edited using standard text editors.

ACS Style

Yassine El Mendili; Antanas Vaitkus; Andrius Merkys; Saulius Gražulis; Daniel Chateigner; Fabrice Mathevet; Stéphanie Gascoin; Sebastien Petit; Jean-François Bardeau; Marco Zanatta; Maria Secchi; Gino Mariotto; Arun Kumar; Michele Cassetta; Luca Lutterotti; Evgeny Borovin; Beate Orberger; Patrick Simon; Bernard Hehlen; Monique Le Guen. Raman Open Database: first interconnected Raman–X-ray diffraction open-access resource for material identification. Journal of Applied Crystallography 2019, 52, 618 -625.

AMA Style

Yassine El Mendili, Antanas Vaitkus, Andrius Merkys, Saulius Gražulis, Daniel Chateigner, Fabrice Mathevet, Stéphanie Gascoin, Sebastien Petit, Jean-François Bardeau, Marco Zanatta, Maria Secchi, Gino Mariotto, Arun Kumar, Michele Cassetta, Luca Lutterotti, Evgeny Borovin, Beate Orberger, Patrick Simon, Bernard Hehlen, Monique Le Guen. Raman Open Database: first interconnected Raman–X-ray diffraction open-access resource for material identification. Journal of Applied Crystallography. 2019; 52 (3):618-625.

Chicago/Turabian Style

Yassine El Mendili; Antanas Vaitkus; Andrius Merkys; Saulius Gražulis; Daniel Chateigner; Fabrice Mathevet; Stéphanie Gascoin; Sebastien Petit; Jean-François Bardeau; Marco Zanatta; Maria Secchi; Gino Mariotto; Arun Kumar; Michele Cassetta; Luca Lutterotti; Evgeny Borovin; Beate Orberger; Patrick Simon; Bernard Hehlen; Monique Le Guen. 2019. "Raman Open Database: first interconnected Raman–X-ray diffraction open-access resource for material identification." Journal of Applied Crystallography 52, no. 3: 618-625.

Journal article
Published: 13 December 2018 in Journal of Geochemical Exploration
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On-line, real-time chemical and mineralogical analyses on drill cores are highly demanded by mining companies. However, they are a challenge because of drill core surface state and sample heterogeneities. We selected four rock samples: highly porous, siliceous breccia and serpentinized harzburgite coming from the base of a nickel laterite profile in New Caledonia which were sonic drilled, and fine grained, homogeneous sandstone and coarse grained granite which were diamond drilled and provided by Eijkelkamp Sonic Drill with unknown origin. The samples were analysed at five surface states (diamond or sonic drilled, cut as squares, polished at 6 and 0.25 μm, powdered <80 μm) by portable XRF spectroscopy (pXRF) in mining and soil modes and portable infrared spectroscopy (pIR, Visible and Near Infrared-Short Wave Infrared range (VNIR-SWIR)). A total of 52 pXRF and 200 pIR analyses were performed per sample at each surface state. This study shows that the surface state has minor influence on the results of the portable instruments. By comparing pIR and pXRF results with laboratory devices (Raman spectroscopy, XRD with Rietveld refinement, XRF spectroscopy and ICP-AES), we evidence the lower and less accurate information obtained from handheld instruments in terms of chemistry and mineralogy. The porosity and grain size effect on the measurement need to be taken into consideration for on-line drill core analyses. We show that the combination of complementary analytical techniques helps to overcome the drawbacks of the core texture and of the precision of portable instruments in order to define the regions of interest (ROI) for mining companies. We also demonstrate that a precise pXRF calibration is mandatory and that the concentration of light elements (Si, Mg), even if not accurate, shows sufficient contrast along the lateritic profile for ROI definition.

ACS Style

Cédric Duée; Beate Orberger; Nicolas Maubec; Valérie Laperche; Laure Capar; Anne Bourguignon; Xavier Bourrat; Yassine El Mendili; Daniel Chateigner; Stéphanie Gascoin; Monique Le Guen; Céline Rodriguez; Fabien Trotet; Mohamed Kadar; Karen Devaux; Michaël Ollier; Henry Pillière; Thomas Lefèvre; Dominique Harang; Fons Eijkelkamp; Harm Nolte; Peter Koert. Impact of heterogeneities and surface roughness on pXRF, pIR, XRD and Raman analyses: Challenges for on-line, real-time combined mineralogical and chemical analyses on drill cores and implication for “high speed” Ni-laterite exploration. Journal of Geochemical Exploration 2018, 198, 1 -17.

AMA Style

Cédric Duée, Beate Orberger, Nicolas Maubec, Valérie Laperche, Laure Capar, Anne Bourguignon, Xavier Bourrat, Yassine El Mendili, Daniel Chateigner, Stéphanie Gascoin, Monique Le Guen, Céline Rodriguez, Fabien Trotet, Mohamed Kadar, Karen Devaux, Michaël Ollier, Henry Pillière, Thomas Lefèvre, Dominique Harang, Fons Eijkelkamp, Harm Nolte, Peter Koert. Impact of heterogeneities and surface roughness on pXRF, pIR, XRD and Raman analyses: Challenges for on-line, real-time combined mineralogical and chemical analyses on drill cores and implication for “high speed” Ni-laterite exploration. Journal of Geochemical Exploration. 2018; 198 ():1-17.

Chicago/Turabian Style

Cédric Duée; Beate Orberger; Nicolas Maubec; Valérie Laperche; Laure Capar; Anne Bourguignon; Xavier Bourrat; Yassine El Mendili; Daniel Chateigner; Stéphanie Gascoin; Monique Le Guen; Céline Rodriguez; Fabien Trotet; Mohamed Kadar; Karen Devaux; Michaël Ollier; Henry Pillière; Thomas Lefèvre; Dominique Harang; Fons Eijkelkamp; Harm Nolte; Peter Koert. 2018. "Impact of heterogeneities and surface roughness on pXRF, pIR, XRD and Raman analyses: Challenges for on-line, real-time combined mineralogical and chemical analyses on drill cores and implication for “high speed” Ni-laterite exploration." Journal of Geochemical Exploration 198, no. : 1-17.

Journal article
Published: 09 November 2018 in RSC Advances
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Alteration experiments involving intermediate level nuclear waste (ILW) glass in contact with hardened cement paste (HCP) were performed to assess its behavior under simulated repository conditions.

ACS Style

Tomo Suzuki-Muresan; A. Abdelouas; C. Landesman; A. Ait-Chaou; Y. El Mendili; S. Ribet; K. Perrigaud; D. Shitara; C. Martin; X. Bourbon. Alteration of vitrified intermediate level nuclear waste in alkaline media: effects of cementitious materials, pH and temperature. RSC Advances 2018, 8, 37665 -37680.

AMA Style

Tomo Suzuki-Muresan, A. Abdelouas, C. Landesman, A. Ait-Chaou, Y. El Mendili, S. Ribet, K. Perrigaud, D. Shitara, C. Martin, X. Bourbon. Alteration of vitrified intermediate level nuclear waste in alkaline media: effects of cementitious materials, pH and temperature. RSC Advances. 2018; 8 (66):37665-37680.

Chicago/Turabian Style

Tomo Suzuki-Muresan; A. Abdelouas; C. Landesman; A. Ait-Chaou; Y. El Mendili; S. Ribet; K. Perrigaud; D. Shitara; C. Martin; X. Bourbon. 2018. "Alteration of vitrified intermediate level nuclear waste in alkaline media: effects of cementitious materials, pH and temperature." RSC Advances 8, no. 66: 37665-37680.

Conference paper
Published: 01 July 2018 in IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium
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The objective of the SOLSA project (EU-H2020) is to develop an analytical expert system for on-line-on-mine-real-time mineralogical and geochemical analyses on sonic drill cores. As one aspect of the system, this paper presents the building of the hyperspectral library and its incorporation into sparse unmixing techniques for mineral identification. Twenty seven spectra representing 14 minerals have been collected for the library. Three sparse unmixing techniques have been investigated and evaluated using simulated data generated from our hyperspectral library, and real hyperspectral data acquired from a serpentinized harzburgite sample. Among the three techniques, the collaborative sparse unmixing by variable splitting and augmented Lagrangian (CLSUnSAL) method provided the best accurate results on the simulated data. In addition, the results of the CLSUnSAL method show high correlation with that of the QEMSCAN® analysis on the harzburgite hyperspectral data.

ACS Style

Thanh Bui; Beate Orberger; Simon B. Blancher; Ali Mohammad-Djafari; Henry Pilliere; Anne Salaun; Xavier Bourrat; Nicolas Maubec; Thomas Lefevre; Celine Rodriguez; Antanas Vaitkus; Saulius Grazulis; Cédric Duée; Dominique Harang; Thomas Wallmach; Yassine El Mendili; Daniel Chateigner; Mike Buxton; Monique Le Guen. Building a Hyperspectral Library and its Incorporation into Sparse Unmixing for Mineral Identification. IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium 2018, 4261 -4264.

AMA Style

Thanh Bui, Beate Orberger, Simon B. Blancher, Ali Mohammad-Djafari, Henry Pilliere, Anne Salaun, Xavier Bourrat, Nicolas Maubec, Thomas Lefevre, Celine Rodriguez, Antanas Vaitkus, Saulius Grazulis, Cédric Duée, Dominique Harang, Thomas Wallmach, Yassine El Mendili, Daniel Chateigner, Mike Buxton, Monique Le Guen. Building a Hyperspectral Library and its Incorporation into Sparse Unmixing for Mineral Identification. IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium. 2018; ():4261-4264.

Chicago/Turabian Style

Thanh Bui; Beate Orberger; Simon B. Blancher; Ali Mohammad-Djafari; Henry Pilliere; Anne Salaun; Xavier Bourrat; Nicolas Maubec; Thomas Lefevre; Celine Rodriguez; Antanas Vaitkus; Saulius Grazulis; Cédric Duée; Dominique Harang; Thomas Wallmach; Yassine El Mendili; Daniel Chateigner; Mike Buxton; Monique Le Guen. 2018. "Building a Hyperspectral Library and its Incorporation into Sparse Unmixing for Mineral Identification." IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium , no. : 4261-4264.

Original articles
Published: 04 May 2018 in Materials at High Temperatures
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The influence of heat treatment process on microstructure and physiochemical properties of Cu77Zn21 alloy was studied. Samples were heated from 300 to 700°C for 15 minutes and gradually cooled to room temperature. Samples were characterized using mechanical testing and surface analysis techniques. It was observed that the grain size increases with the increasing temperature. The decrease in hardness is due to composition change of the Cu-Zn alloy attributed to zinc diffusion.XRD shows the presence of only α brass with a preferential orientation along the (111) plane. The analyses show that temperature affects the crystalline parameters. The rms microstrain was reduced mainly by thermal activation. The heat treatment promotes atomic diffusion and leads to a better crystallinity of the particles. The results of Raman investigations confirmed the changes in the Cu-Zn alloy surface composition with a clear enrichment in CuO. This behavior correlates with the results obtained by mechanical testing.

ACS Style

Laidi Babouri; Kamel Belmokre; Abdenour Kabir; Abdessalem Abdelouas; Riad Khettabi; Yassine El Mendili. Microstructure and crystallographic properties of Cu77Zn21alloy under the effect of heat treatment. Materials at High Temperatures 2018, 36, 165 -172.

AMA Style

Laidi Babouri, Kamel Belmokre, Abdenour Kabir, Abdessalem Abdelouas, Riad Khettabi, Yassine El Mendili. Microstructure and crystallographic properties of Cu77Zn21alloy under the effect of heat treatment. Materials at High Temperatures. 2018; 36 (2):165-172.

Chicago/Turabian Style

Laidi Babouri; Kamel Belmokre; Abdenour Kabir; Abdessalem Abdelouas; Riad Khettabi; Yassine El Mendili. 2018. "Microstructure and crystallographic properties of Cu77Zn21alloy under the effect of heat treatment." Materials at High Temperatures 36, no. 2: 165-172.

Journal article
Published: 01 January 2017 in Applied Geochemistry
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ACS Style

Abdelouahed Ait Chaou; Abdesselam Abdelouas; Yassine El Mendili; Christelle Martin. The role of pH in the vapor hydration at 175 °C of the French SON68 glass. Applied Geochemistry 2017, 76, 22 -35.

AMA Style

Abdelouahed Ait Chaou, Abdesselam Abdelouas, Yassine El Mendili, Christelle Martin. The role of pH in the vapor hydration at 175 °C of the French SON68 glass. Applied Geochemistry. 2017; 76 ():22-35.

Chicago/Turabian Style

Abdelouahed Ait Chaou; Abdesselam Abdelouas; Yassine El Mendili; Christelle Martin. 2017. "The role of pH in the vapor hydration at 175 °C of the French SON68 glass." Applied Geochemistry 76, no. : 22-35.

Journal article
Published: 14 July 2016 in RSC Advances
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Pristine and 29Si-doped SON68 glass were leached in dynamic mode in Si-rich COx water at 42 ppm, pH 8, (35–90 °C) and S/V (900–1800 m−1). Diffusion and surface reaction process governed the glass alteration. The residual rate at 90 °C to 653 days is about 10−3 g m−2 d−1.

ACS Style

Rachid Bouakkaz; Abdesselam Abdelouas; Yassine El Mendili; Bernd Grambow; Stéphane Gin. SON68 glass alteration under Si-rich solutions at low temperature (35–90 °C): kinetics, secondary phases and isotopic exchange studies. RSC Advances 2016, 6, 72616 -72633.

AMA Style

Rachid Bouakkaz, Abdesselam Abdelouas, Yassine El Mendili, Bernd Grambow, Stéphane Gin. SON68 glass alteration under Si-rich solutions at low temperature (35–90 °C): kinetics, secondary phases and isotopic exchange studies. RSC Advances. 2016; 6 (76):72616-72633.

Chicago/Turabian Style

Rachid Bouakkaz; Abdesselam Abdelouas; Yassine El Mendili; Bernd Grambow; Stéphane Gin. 2016. "SON68 glass alteration under Si-rich solutions at low temperature (35–90 °C): kinetics, secondary phases and isotopic exchange studies." RSC Advances 6, no. 76: 72616-72633.

Journal article
Published: 01 January 2016 in Science and Technology of Advanced Materials
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International audienceThe effects of laser irradiation on gamma-Fe2O3 4 +/- 1 nm diameter maghemite nanocrystals synthesized by co-precipitation and dispersed into an amorphous silica matrix by sol-gel methods have been investigated as function of iron oxide mass fraction. The structural properties of gamma-Fe2O3 phase were carefully examined by X-ray diffraction and transmission electron microscopy. It has been shown that gamma-Fe2O3 nanocrystals are isolated from each other and uniformly dispersed in silica matrix. The phase stability of maghemite nanocrystals was examined in situ under laser irradiation by Raman spectroscopy and compared with that resulting from heat treatment by X-ray diffraction. It was concluded that epsilon-Fe2O3 is an intermediate phase between gamma-Fe2O3 and alpha-Fe2O3 and a series of distinct Raman vibrational bands were identified with the epsilon-Fe2O3 phase. The structural transformation of gamma-Fe2O3 into alpha-Fe2O3 occurs either directly or via epsilon-Fe2O3, depending on the rate of nanocrystal agglomeration, the concentration of iron oxide in the nanocomposite and the properties of silica matrix. A phase diagram is established as a function of laser power density and concentration

ACS Style

Yassine El Mendili; Jean-François Bardeau; Nirina Randrianantoandro; Jean-Marc Greneche; Fabien Grasset. Structural behavior of laser-irradiated γ-Fe2O3 nanocrystals dispersed in porous silica matrix : γ-Fe2O3 to α-Fe2O3 phase transition and formation of ε-Fe2O3. Science and Technology of Advanced Materials 2016, 17, 597 -609.

AMA Style

Yassine El Mendili, Jean-François Bardeau, Nirina Randrianantoandro, Jean-Marc Greneche, Fabien Grasset. Structural behavior of laser-irradiated γ-Fe2O3 nanocrystals dispersed in porous silica matrix : γ-Fe2O3 to α-Fe2O3 phase transition and formation of ε-Fe2O3. Science and Technology of Advanced Materials. 2016; 17 (1):597-609.

Chicago/Turabian Style

Yassine El Mendili; Jean-François Bardeau; Nirina Randrianantoandro; Jean-Marc Greneche; Fabien Grasset. 2016. "Structural behavior of laser-irradiated γ-Fe2O3 nanocrystals dispersed in porous silica matrix : γ-Fe2O3 to α-Fe2O3 phase transition and formation of ε-Fe2O3." Science and Technology of Advanced Materials 17, no. 1: 597-609.

Journals
Published: 10 July 2015 in RSC Advances
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Vapor hydration of a simulated typical French nuclear intermediate-level waste (ILW) glass in unsaturated conditions has been studied in order to simulate its behaviour under repository conditions before complete saturation of the disposal site.

ACS Style

A. Ait Chaou; A. Abdelouas; Yassine El Mendili; R. Bouakkaz; Satoshi Utsunomiya; C. Martin; X. Bourbon. Vapor hydration of a simulated borosilicate nuclear waste glass in unsaturated conditions at 50 °C and 90 °C. RSC Advances 2015, 5, 64538 -64549.

AMA Style

A. Ait Chaou, A. Abdelouas, Yassine El Mendili, R. Bouakkaz, Satoshi Utsunomiya, C. Martin, X. Bourbon. Vapor hydration of a simulated borosilicate nuclear waste glass in unsaturated conditions at 50 °C and 90 °C. RSC Advances. 2015; 5 (79):64538-64549.

Chicago/Turabian Style

A. Ait Chaou; A. Abdelouas; Yassine El Mendili; R. Bouakkaz; Satoshi Utsunomiya; C. Martin; X. Bourbon. 2015. "Vapor hydration of a simulated borosilicate nuclear waste glass in unsaturated conditions at 50 °C and 90 °C." RSC Advances 5, no. 79: 64538-64549.

Journal article
Published: 04 May 2015 in The Journal of Physical Chemistry C
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International audienceWe investigated the influence of the coating of maghemite nanoparticles (NPs) with oleic acid and oleylamine molecules on the thermal stability of maghemite and on the gamma -> alpha-Fe2O3 phase transformation. The uncoated maghemite NPs were synthesized by coprecipitation and the coated NPs by thermal decomposition of organometallic precursors. The morphology and size of the coated NPs were characterized by transmission electron microscopy and magnetic and structural properties by Fe-57 Mossbauer and Raman spectroscopies. The phase stability of coated maghemite NPs was examined under in situ laser irradiation by Raman spectroscopy. The results indicate that coated gamma-Fe2O3 NPs are thermally more stable than the uncoated NPs: the phase transformation of maghemite into hematite was observed at 15 mW for uncoated NPs of 4 nm, whereas it occurs at 120 mW for the coated NPs of similar size. The analysis of the Raman baseline profile reveals clearly that the surface coating of maghemite NPs results both in reducing the number of surface defects of nanoparticles and in delaying this phase transition

ACS Style

Yassine El Mendili; Fabien Grasset; Nirina Randrianantoandro; Nicolas Nerambourg; Jean-Marc Greneche; Jean-François Bardeau. Improvement of Thermal Stability of Maghemite Nanoparticles Coated with Oleic Acid and Oleylamine Molecules: Investigations under Laser Irradiation. The Journal of Physical Chemistry C 2015, 119, 10662 -10668.

AMA Style

Yassine El Mendili, Fabien Grasset, Nirina Randrianantoandro, Nicolas Nerambourg, Jean-Marc Greneche, Jean-François Bardeau. Improvement of Thermal Stability of Maghemite Nanoparticles Coated with Oleic Acid and Oleylamine Molecules: Investigations under Laser Irradiation. The Journal of Physical Chemistry C. 2015; 119 (19):10662-10668.

Chicago/Turabian Style

Yassine El Mendili; Fabien Grasset; Nirina Randrianantoandro; Nicolas Nerambourg; Jean-Marc Greneche; Jean-François Bardeau. 2015. "Improvement of Thermal Stability of Maghemite Nanoparticles Coated with Oleic Acid and Oleylamine Molecules: Investigations under Laser Irradiation." The Journal of Physical Chemistry C 119, no. 19: 10662-10668.

Journal article
Published: 01 April 2015 in Journal of Nuclear Materials
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ACS Style

James J. Neeway; Abdesselam Abdelouas; Solange Ribet; Yassine El Mendili; Stephan Schumacher; Bernd Grambow; Jim Neeway. Effect of Callovo-Oxfordian clay rock on the dissolution rate of the SON68 simulated nuclear waste glass. Journal of Nuclear Materials 2015, 459, 291 -300.

AMA Style

James J. Neeway, Abdesselam Abdelouas, Solange Ribet, Yassine El Mendili, Stephan Schumacher, Bernd Grambow, Jim Neeway. Effect of Callovo-Oxfordian clay rock on the dissolution rate of the SON68 simulated nuclear waste glass. Journal of Nuclear Materials. 2015; 459 ():291-300.

Chicago/Turabian Style

James J. Neeway; Abdesselam Abdelouas; Solange Ribet; Yassine El Mendili; Stephan Schumacher; Bernd Grambow; Jim Neeway. 2015. "Effect of Callovo-Oxfordian clay rock on the dissolution rate of the SON68 simulated nuclear waste glass." Journal of Nuclear Materials 459, no. : 291-300.