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Alexandra Bourdot
LMT - Laboratoire de Mécanique et Technologie, Université Paris-Saclay, ENS Paris-Saclay, CNRS, Gif sur Yvette, France

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Journal article
Published: 17 August 2021 in MRS Energy & Sustainability
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ACS Style

Djamila Boukhelkhal; Mohamed Guendouz; Alexandra Bourdot; Hanane Cheriet; Kaouther Messaoudi. Correction to: Elaboration of bio-based building materials made from recycled olive core. MRS Energy & Sustainability 2021, 1 -1.

AMA Style

Djamila Boukhelkhal, Mohamed Guendouz, Alexandra Bourdot, Hanane Cheriet, Kaouther Messaoudi. Correction to: Elaboration of bio-based building materials made from recycled olive core. MRS Energy & Sustainability. 2021; ():1-1.

Chicago/Turabian Style

Djamila Boukhelkhal; Mohamed Guendouz; Alexandra Bourdot; Hanane Cheriet; Kaouther Messaoudi. 2021. "Correction to: Elaboration of bio-based building materials made from recycled olive core." MRS Energy & Sustainability , no. : 1-1.

Conference paper
Published: 01 August 2021 in RILEM Bookseries
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Hemp concrete has been widely recommended as bio-based material to limit carbon emissions and energy consumption of buildings. This material presents interesting hygrothermal and acoustic performances. It is produced of hemp particles embedded in a natural cement that forms a very heterogeneous and porous component. Few works have studied the evolution of the properties of hemp and flax concrete, over time. This research aims to study the evolution of the compressive strength, the microstructure and porosity of hemp concrete over the time. Thus, three accelerated aging protocols were conducted on the formulated hemp concrete before undertaken properties tracking experimentations. Results shows that compressive strength increases up to 58 days for hemp concrete. The hemp shiv deformation depending on the accelerated aging in hemp concrete is calculated by 2D image analysis. Optical investigation was used for this experimentation. Microscopic results confirm the high degradation of such heterogeneous materials which is confirmed by the porosity results.

ACS Style

Kamilia Abahri; Alexandra Bourdot; Sylvain Langlois; Ghaith Alhaik. Impact of the Accelerated Aging Protocols on the Hemp Concrete Durability. RILEM Bookseries 2021, 205 -215.

AMA Style

Kamilia Abahri, Alexandra Bourdot, Sylvain Langlois, Ghaith Alhaik. Impact of the Accelerated Aging Protocols on the Hemp Concrete Durability. RILEM Bookseries. 2021; ():205-215.

Chicago/Turabian Style

Kamilia Abahri; Alexandra Bourdot; Sylvain Langlois; Ghaith Alhaik. 2021. "Impact of the Accelerated Aging Protocols on the Hemp Concrete Durability." RILEM Bookseries , no. : 205-215.

Journal article
Published: 10 June 2021 in Applied Sciences
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The use of bio-based materials (BBM) in buildings is an interesting solution as they are eco-friendly materials and have low embodied energy. This article aims to investigate the hygric performance of two bio-based materials: palm and sunflower concretes. The moisture buffering value (MBV) characterizes the ability of a material or multilayer component to moderate the variation in the indoor relative humidity (RH). In the literature, the moisture buffer values of bio-based concretes were measured at a constant temperature of 23 °C. However, in reality, the indoor temperature of the buildings is variable. The originality of this article is found in studying the influence of the temperature on the moisture buffer performance of BBM. A study at wall scale on its impact on the indoor RH at room level will be carried out. First, the physical models are presented. Second, the numerical models are implemented in the Simulation Problem Analysis and Research Kernel (SPARK) suited to complex problems. Then, the numerical model validated with the experimental results found in the literature is used to investigate the moisture buffering capacity of BBM as a function of the temperature and its application in buildings. The results show that the temperature has a significant impact on the moisture buffering capacity of bio-based building materials and its capacity to dampen indoor RH variation. Using the numerical model presented in this paper can predict and optimize the hygric performance of BBM designed for building application.

ACS Style

Fathia Igue; Anh Tran Le; Alexandra Bourdot; Geoffrey Promis; Sy Nguyen; Omar Douzane; Laurent Lahoche; Thierry Langlet. Impact of Temperature on the Moisture Buffering Performance of Palm and Sunflower Concretes. Applied Sciences 2021, 11, 5420 .

AMA Style

Fathia Igue, Anh Tran Le, Alexandra Bourdot, Geoffrey Promis, Sy Nguyen, Omar Douzane, Laurent Lahoche, Thierry Langlet. Impact of Temperature on the Moisture Buffering Performance of Palm and Sunflower Concretes. Applied Sciences. 2021; 11 (12):5420.

Chicago/Turabian Style

Fathia Igue; Anh Tran Le; Alexandra Bourdot; Geoffrey Promis; Sy Nguyen; Omar Douzane; Laurent Lahoche; Thierry Langlet. 2021. "Impact of Temperature on the Moisture Buffering Performance of Palm and Sunflower Concretes." Applied Sciences 11, no. 12: 5420.

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: 27 September 2019 in Journal of Advanced Concrete Technology
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Plant concretes were developed and are currently used as filling material in a timber frame. Their properties are strongly related to the bio-aggregates characteristics. In addition, since hemp shiv, the reference bio-based aggregate, has a limited availability, it is necessary to consider alternative bio-aggregates largely and locally available. Thus, this paper focused on identifying and understanding mechanisms of interaction between different bio-aggregates and mineral binders. To address this issue, the first objective was to determine the properties of five hemp shives and two alternative bio-aggregates for vegetal lightweight concrete: corn and sunflower bark particles. The study of the chemical interactions between bio-aggregates and a pozzolanic binder was conducted on model pastes mixed with filtered solutions containing bio-aggregates extractives. The mechanical properties of the paste, as well as their hydration and their mineralogical evolution were studied. In the last part, the mechanical behavior of vegetal concretes was assessed. The results highlight a strong relation between the mechanical behavior of pastes and concretes and the extractive content of the different tested bio-aggregates. Finally, pastes appeared as a relatively good model to predict the behavior of concretes by following their early age performances: setting delay and 3-day mechanical strength.

ACS Style

Alexandra Bourdot; Camille Magniont; Méryl Lagouin; César Niyigena; Philippe Evon; Sofiane Amziane. Impact of Bio-Aggregates Properties on the Chemical Interactions with Mineral Binder, Application to Vegetal Concrete. Journal of Advanced Concrete Technology 2019, 17, 542 -558.

AMA Style

Alexandra Bourdot, Camille Magniont, Méryl Lagouin, César Niyigena, Philippe Evon, Sofiane Amziane. Impact of Bio-Aggregates Properties on the Chemical Interactions with Mineral Binder, Application to Vegetal Concrete. Journal of Advanced Concrete Technology. 2019; 17 (9):542-558.

Chicago/Turabian Style

Alexandra Bourdot; Camille Magniont; Méryl Lagouin; César Niyigena; Philippe Evon; Sofiane Amziane. 2019. "Impact of Bio-Aggregates Properties on the Chemical Interactions with Mineral Binder, Application to Vegetal Concrete." Journal of Advanced Concrete Technology 17, no. 9: 542-558.

Journal article
Published: 01 August 2018 in Cement and Concrete Composites
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The present study was conducted to provide a better understanding of the alkali-silica reactivity (ASR) of siliceous limestones in concrete applications. A Swiss siliceous limestone, which is potentially reactive, was subjected to a series of tests. Microbar tests were first conducted to classify the limestones reactivity with respect to ASR. Two other methods were then used to characterize the amount of SiO2 present. First, an analysis of the chemical composition with petrographic and mineralogical characterizations was carried out, and second, a model reactor was used to characterize the silica reactivity. The results showed a siliceous reactive limestone. In petrography, three main types of carbonate lithology were outlined according to their SiO2 and glauconitic content. The emphasis was placed on the types of SiO2 and their sizes: a finely dispersed micro-to crypto-quartz has been highlighted by SEM and TEM, and analysed as quartz. The reactive free SiO2 content, obtained by a mineralogical calculating method, completes the petrographic results. The proportion of reactive free SiO2 could be essentially attributed to the presence of finely dispersed micro-to crypto-quartz from TEM observations which is probably very reactive towards the ASR due to its small-size. The presence of finely dispersed micro-to crypto-quartz is important to consider, due to its potential effects on the concrete mixture. The grain size of SiO2 seems to be a supplementary key parameter, in addition to crystallinity and strain, since it can promote ASR development with some siliceous aggregates.

ACS Style

A. Bourdot; V. Thiery; D. Bulteel; S. Cuchet; J.-G. Hammerschlag. Alkali-reactivity of a Swiss siliceous limestone caused by finely dispersed quartz. Cement and Concrete Composites 2018, 91, 97 -107.

AMA Style

A. Bourdot, V. Thiery, D. Bulteel, S. Cuchet, J.-G. Hammerschlag. Alkali-reactivity of a Swiss siliceous limestone caused by finely dispersed quartz. Cement and Concrete Composites. 2018; 91 ():97-107.

Chicago/Turabian Style

A. Bourdot; V. Thiery; D. Bulteel; S. Cuchet; J.-G. Hammerschlag. 2018. "Alkali-reactivity of a Swiss siliceous limestone caused by finely dispersed quartz." Cement and Concrete Composites 91, no. : 97-107.

Journal article
Published: 01 January 2018 in Journal of Cleaner Production
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Chadi Maalouf; Carlo Ingrao; Flavio Scrucca; Tala Moussa; Alexandra Bourdot; Caterina Tricase; Andrea Presciutti; Francesco Asdrubali. An energy and carbon footprint assessment upon the usage of hemp-lime concrete and recycled-PET façades for office facilities in France and Italy. Journal of Cleaner Production 2018, 170, 1640 -1653.

AMA Style

Chadi Maalouf, Carlo Ingrao, Flavio Scrucca, Tala Moussa, Alexandra Bourdot, Caterina Tricase, Andrea Presciutti, Francesco Asdrubali. An energy and carbon footprint assessment upon the usage of hemp-lime concrete and recycled-PET façades for office facilities in France and Italy. Journal of Cleaner Production. 2018; 170 ():1640-1653.

Chicago/Turabian Style

Chadi Maalouf; Carlo Ingrao; Flavio Scrucca; Tala Moussa; Alexandra Bourdot; Caterina Tricase; Andrea Presciutti; Francesco Asdrubali. 2018. "An energy and carbon footprint assessment upon the usage of hemp-lime concrete and recycled-PET façades for office facilities in France and Italy." Journal of Cleaner Production 170, no. : 1640-1653.

Journal article
Published: 01 October 2017 in Energy and Buildings
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ACS Style

Alexandra Bourdot; Tala Moussa; Alexandre Gacoin; Chadi Maalouf; Patricia Vázquez; Celine Thomachot-Schneider; Christophe Bliard; Abdelatif Merabtine; Mohammed Lachi; Omar Douzane; Hamzé Karaky; Guillaume Polidori. Characterization of a hemp-based agro-material: Influence of starch ratio and hemp shive size on physical, mechanical, and hygrothermal properties. Energy and Buildings 2017, 153, 501 -512.

AMA Style

Alexandra Bourdot, Tala Moussa, Alexandre Gacoin, Chadi Maalouf, Patricia Vázquez, Celine Thomachot-Schneider, Christophe Bliard, Abdelatif Merabtine, Mohammed Lachi, Omar Douzane, Hamzé Karaky, Guillaume Polidori. Characterization of a hemp-based agro-material: Influence of starch ratio and hemp shive size on physical, mechanical, and hygrothermal properties. Energy and Buildings. 2017; 153 ():501-512.

Chicago/Turabian Style

Alexandra Bourdot; Tala Moussa; Alexandre Gacoin; Chadi Maalouf; Patricia Vázquez; Celine Thomachot-Schneider; Christophe Bliard; Abdelatif Merabtine; Mohammed Lachi; Omar Douzane; Hamzé Karaky; Guillaume Polidori. 2017. "Characterization of a hemp-based agro-material: Influence of starch ratio and hemp shive size on physical, mechanical, and hygrothermal properties." Energy and Buildings 153, no. : 501-512.

Journal article
Published: 01 October 2016 in Construction and Building Materials
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ACS Style

Alexandra Bourdot; Geoffrey Promis; Anh Dung Tran Le; Omar Douzane; Amar Benazzouk; Frédéric Rosquoët; Thierry Langlet. Hygrothermal properties of blocks based on eco-aggregates: Experimental and numerical study. Construction and Building Materials 2016, 125, 279 -289.

AMA Style

Alexandra Bourdot, Geoffrey Promis, Anh Dung Tran Le, Omar Douzane, Amar Benazzouk, Frédéric Rosquoët, Thierry Langlet. Hygrothermal properties of blocks based on eco-aggregates: Experimental and numerical study. Construction and Building Materials. 2016; 125 ():279-289.

Chicago/Turabian Style

Alexandra Bourdot; Geoffrey Promis; Anh Dung Tran Le; Omar Douzane; Amar Benazzouk; Frédéric Rosquoët; Thierry Langlet. 2016. "Hygrothermal properties of blocks based on eco-aggregates: Experimental and numerical study." Construction and Building Materials 125, no. : 279-289.

Journal article
Published: 01 June 2016 in Construction and Building Materials
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ACS Style

Alexandra Bourdot; Vincent Thiéry; David Bulteel; Jean-Gabriel Hammerschlag. Effect of burnt oil shale on ASR expansions: A petrographic study of concretes based on reactive aggregates. Construction and Building Materials 2016, 112, 556 -569.

AMA Style

Alexandra Bourdot, Vincent Thiéry, David Bulteel, Jean-Gabriel Hammerschlag. Effect of burnt oil shale on ASR expansions: A petrographic study of concretes based on reactive aggregates. Construction and Building Materials. 2016; 112 ():556-569.

Chicago/Turabian Style

Alexandra Bourdot; Vincent Thiéry; David Bulteel; Jean-Gabriel Hammerschlag. 2016. "Effect of burnt oil shale on ASR expansions: A petrographic study of concretes based on reactive aggregates." Construction and Building Materials 112, no. : 556-569.

Journal article
Published: 01 August 2015 in Materials Characterization
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The Toarcian Posidonia shale from Dotternhausen, Germany, is quarried and burnt in a fluidized bed reactor to produce electricity. The combustion residue, namely burnt oil shale (BOS), is used in the adjacent cement work as an additive in blended cements. The starting material is a typical laminated oil shale with an organic matter content ranging from 6 to 18%. Mineral matter consists principally of quartz, feldspar, pyrite and clays. After calcination in the range, the resulting product, burnt oil shale, keeps the macroscopic layered texture however with different mineralogy (anhydrite, lime, iron oxides) and the formation of an amorphous phase. This one, studied under STEM, reveals a typical texture of incipient partial melting due to a long retention time (ca. 30 min) and quenching. An in-situ high temperature X-ray diffraction (HTXRD) allowed studying precisely the mineralogical changes associated with the temperature increase.

ACS Style

Vincent Thiéry; Alexandra Bourdot; David Bulteel. Characterization of raw and burnt oil shale from Dotternhausen: Petrographical and mineralogical evolution with temperature. Materials Characterization 2015, 106, 442 -451.

AMA Style

Vincent Thiéry, Alexandra Bourdot, David Bulteel. Characterization of raw and burnt oil shale from Dotternhausen: Petrographical and mineralogical evolution with temperature. Materials Characterization. 2015; 106 ():442-451.

Chicago/Turabian Style

Vincent Thiéry; Alexandra Bourdot; David Bulteel. 2015. "Characterization of raw and burnt oil shale from Dotternhausen: Petrographical and mineralogical evolution with temperature." Materials Characterization 106, no. : 442-451.