2023Article de journal ER3 Auteurs : Libessart, Laurent; Anceur, R.; Djelal-Dantec, Chafika; Aljawish, A.; Millares, M. Synthesis and characterization of release agent from used cooking oil at the concrete/formwork interface Dans: International Journal of Environmental Science and Technology, 2023, (ACL). Liens @article{libessart:hal-04072397,
title = {Synthesis and characterization of release agent from used cooking oil at the concrete/formwork interface},
author = {Laurent Libessart and R. Anceur and Chafika Djelal-Dantec and A. Aljawish and M. Millares},
url = {https://hal.science/hal-04072397},
doi = {10.1007/s13762-023-04918-5},
year = {2023},
date = {2023-04-01},
urldate = {2023-04-01},
journal = {International Journal of Environmental Science and Technology},
publisher = {Springer},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
|
2023Article de journal ER3 Auteurs : Schlupp, Florian; Page, Jonathan; Djelal-Dantec, Chafika; Libessart, Laurent Use of biomass bottom ash as granular substitute in mortar Dans: Journal of Building Engineering, vol. 75, p. 106927, 2023, (ACL). Liens @article{schlupp:hal-04136678,
title = {Use of biomass bottom ash as granular substitute in mortar},
author = {Florian Schlupp and Jonathan Page and Chafika Djelal-Dantec and Laurent Libessart},
url = {https://hal.science/hal-04136678},
doi = {10.1016/j.jobe.2023.106927},
year = {2023},
date = {2023-09-01},
urldate = {2023-09-01},
journal = {Journal of Building Engineering},
volume = {75},
pages = {106927},
publisher = {Elsevier},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
|
2023Article de journal ER3 Auteurs : Libessart, Laurent; Anceur, R.; Djelal-Dantec, Chafika; Aljawish, A.; Millares, M. Synthesis and characterization of release agent from used cooking oil at the concrete/formwork interface Dans: International Journal of Environmental Science and Technology, 2023, (ACL). Liens @article{libessart:hal-04072397b,
title = {Synthesis and characterization of release agent from used cooking oil at the concrete/formwork interface},
author = {Laurent Libessart and R. Anceur and Chafika Djelal-Dantec and A. Aljawish and M. Millares},
url = {https://hal.science/hal-04072397},
doi = {10.1007/s13762-023-04918-5},
year = {2023},
date = {2023-04-01},
urldate = {2023-04-01},
journal = {International Journal of Environmental Science and Technology},
publisher = {Springer},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
|
2023Article de journal ER3 Auteurs : Feys, Dimitri; Sonebi, Mohammed; Amziane, Sofiane; Djelal-Dantec, Chafika; El-Cheikh, Khadija; Fataei, Shirin; Greim, Markus; Ivanova, Irina; Keller, Helena; Khayat, Kamal; Vanhove, Yannick; Libessart, Laurent; Mechtcherine, Viktor; Navarrete, Ivan; Perrot, Arnaud; Secrieru, Egor RILEM TC 266-MRP: round-robin rheological tests on high performance mortar and concrete with adapted rheology-rheometers, mixtures and procedures Dans: Materials and structures, vol. 56, no. 4, p. 90, 2023, (ACL). Liens @article{feys:hal-04136704,
title = {RILEM TC 266-MRP: round-robin rheological tests on high performance mortar and concrete with adapted rheology-rheometers, mixtures and procedures},
author = {Dimitri Feys and Mohammed Sonebi and Sofiane Amziane and Chafika Djelal-Dantec and Khadija El-Cheikh and Shirin Fataei and Markus Greim and Irina Ivanova and Helena Keller and Kamal Khayat and Yannick Vanhove and Laurent Libessart and Viktor Mechtcherine and Ivan Navarrete and Arnaud Perrot and Egor Secrieru},
url = {https://hal.science/hal-04136704},
doi = {10.1617/s11527-023-02173-1},
year = {2023},
date = {2023-05-01},
urldate = {2023-05-01},
journal = {Materials and structures},
volume = {56},
number = {4},
pages = {90},
publisher = {Springer Verlag},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
|
2023Article de journal ER3 Auteurs : Leussa, Claudia Charlotte Tchamo; Djangang, Chantale Njiomou; Libessart, Laurent; E., Tiffo; Djelal-Dantec, Chafika; Elimbi, Antoine Pozzolanic activity of kaolinite material rich in gibbsite calcined at low temperature and its effect on physical and mechanical properties of Portland cement mortars Dans: Journal of Materials and Environmental Science , vol. 14, no. 9, p. 1096-1108, 2023, (ACL). Liens @article{leussa:hal-04267485,
title = {Pozzolanic activity of kaolinite material rich in gibbsite calcined at low temperature and its effect on physical and mechanical properties of Portland cement mortars},
author = {Claudia Charlotte Tchamo Leussa and Chantale Njiomou Djangang and Laurent Libessart and Tiffo E. and Chafika Djelal-Dantec and Antoine Elimbi},
url = {https://univ-artois.hal.science/hal-04267485},
year = {2023},
date = {2023-09-01},
urldate = {2023-09-01},
journal = {Journal of Materials and Environmental Science },
volume = {14},
number = {9},
pages = {1096-1108},
publisher = {Mohammed Premier University},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
|
2023Book Section ER3 Auteurs : Vanhove, Yannick; Djelal-Dantec, Chafika; Libessart, Laurent; Tilo, Proske; Secrieru, Egor; Feys, Dimitri State of knowledge of interface rheometry Dans: Measuring rheological properties of cement-based materials, Report of RILEM Technical committee 266 MRP, p. Chapitre 7, 2023, (OS). Liens @incollection{vanhove:hal-04356443,
title = {State of knowledge of interface rheometry},
author = {Yannick Vanhove and Chafika Djelal-Dantec and Laurent Libessart and Proske Tilo and Egor Secrieru and Dimitri Feys},
url = {https://univ-artois.hal.science/hal-04356443},
year = {2023},
date = {2023-10-01},
urldate = {2023-10-01},
booktitle = {Measuring rheological properties of cement-based materials, Report of RILEM Technical committee 266 MRP},
pages = {Chapitre 7},
note = {OS},
keywords = {ER3},
pubstate = {published},
tppubtype = {incollection}
}
|
2023Article de journal ER3 Auteurs : Schlupp, Florian; Page, Jonathan; Djelal-Dantec, Chafika; Libessart, Laurent Influence of recycled sand from biomass combustion on the mechanical, hydration and porous properties of mortar mixtures Dans: Construction and Building Materials, vol. 404, p. 133193, 2023, (ACL). Liens @article{schlupp:hal-04285039,
title = {Influence of recycled sand from biomass combustion on the mechanical, hydration and porous properties of mortar mixtures},
author = {Florian Schlupp and Jonathan Page and Chafika Djelal-Dantec and Laurent Libessart},
url = {https://hal.science/hal-04285039},
doi = {10.1016/j.conbuildmat.2023.133193},
year = {2023},
date = {2023-11-01},
urldate = {2023-11-01},
journal = {Construction and Building Materials},
volume = {404},
pages = {133193},
publisher = {Elsevier},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
|
2022Proceedings Article ER3 Auteurs : Schlupp, Florian; Page, Jonathan; Djelal-Dantec, Chafika; Libessart, Laurent Effet de la combustion sur les cendres sous foyer de biomasse - Valorisation en tant que sable dans un mortier Dans: NOMAD 2022 - 4e conférence internationale francophone Nouveaux Matériaux et Durabilité, IMT Mines Al`es and LMGC and LIFAM Montpellier, France, 2022, (ACTI). Liens @inproceedings{schlupp:hal-03881451,
title = {Effet de la combustion sur les cendres sous foyer de biomasse - Valorisation en tant que sable dans un mortier},
author = {Florian Schlupp and Jonathan Page and Chafika Djelal-Dantec and Laurent Libessart},
url = {https://hal.archives-ouvertes.fr/hal-03881451},
year = {2022},
date = {2022-11-01},
urldate = {2022-11-01},
booktitle = {NOMAD 2022 - 4e conférence internationale francophone Nouveaux Matériaux et Durabilité},
address = {Montpellier, France},
organization = {IMT Mines Al`es and LMGC and LIFAM},
note = {ACTI},
keywords = {ER3},
pubstate = {published},
tppubtype = {inproceedings}
}
|
2021Article de journal ER5 Auteurs : Kenai, Mohamed-Amine; Libessart, Laurent; Lassue, Stéphane; Defer, Didier Impact of green walls occultation on energy balance: Development of a TRNSYS model on a brick masonry house Dans: Journal of Building Engineering, vol. 44, p. 102634, 2021. Liens @article{Kenai2021,
title = {Impact of green walls occultation on energy balance: Development of a TRNSYS model on a brick masonry house},
author = {Mohamed-Amine Kenai and Laurent Libessart and Stéphane Lassue and Didier Defer},
doi = {10.1016/j.jobe.2021.102634},
year = {2021},
date = {2021-12-01},
journal = {Journal of Building Engineering},
volume = {44},
pages = {102634},
publisher = {Elsevier BV},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2021Article de journal ER3 Auteurs : Spitz, Nicolas; Coniglio, Nicolas; Libessart, Laurent; Mansori, Mohamed El; Djelal-Dantec, Chafika Characterizing tribological behavior of fresh concrete against formwork surfaces Dans: Construction and Building Materials, vol. 303, p. 124233, 2021, ISSN: 0950-0618, (ACL). Résumé | Liens @article{SPITZ2021124233,
title = {Characterizing tribological behavior of fresh concrete against formwork surfaces},
author = {Nicolas Spitz and Nicolas Coniglio and Laurent Libessart and Mohamed El Mansori and Chafika Djelal-Dantec},
url = {https://www.sciencedirect.com/science/article/pii/S0950061821019930},
doi = {https://doi.org/10.1016/j.conbuildmat.2021.124233},
issn = {0950-0618},
year = {2021},
date = {2021-01-01},
urldate = {2021-01-01},
journal = {Construction and Building Materials},
volume = {303},
pages = {124233},
abstract = {Concrete walls are constructed by pouring fresh concrete in-between formworks. The lifespan of these formworks is limited due to the abrasive nature of concrete. The present work investigates the wear of metallic and polymeric-coated plates in contact with fresh concrete. Two formulations were studied: standard concrete and self-consolidating concrete. A plane-plane tribometer was used to control the fresh concrete friction against the plates. This device reproduces the implementation of concrete in the formwork. Results revealed a Coulomb friction law within the range of tested normal pressures. The friction testing induced changes in the surface topography of the plates. The evolution in topography were associated to two underlying wear mechanisms: a granulate-formwork solid-solid friction and a capillary-dominated friction.},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
Concrete walls are constructed by pouring fresh concrete in-between formworks. The lifespan of these formworks is limited due to the abrasive nature of concrete. The present work investigates the wear of metallic and polymeric-coated plates in contact with fresh concrete. Two formulations were studied: standard concrete and self-consolidating concrete. A plane-plane tribometer was used to control the fresh concrete friction against the plates. This device reproduces the implementation of concrete in the formwork. Results revealed a Coulomb friction law within the range of tested normal pressures. The friction testing induced changes in the surface topography of the plates. The evolution in topography were associated to two underlying wear mechanisms: a granulate-formwork solid-solid friction and a capillary-dominated friction. |
2020Article de journal ER5 Auteurs : Kenai, Mohamed-Amine; Libessart, Laurent; Lassue, Stephane; Defer, Didier Impact of plants obscuration on energy balance : Theoretical and numerical study Dans: Journal of Building Engineering, vol. 29, p. 101112, 2020, ISSN: 2352-7102. Résumé | Liens @article{KENAI2020101112,
title = {Impact of plants obscuration on energy balance : Theoretical and numerical study},
author = {Mohamed-Amine Kenai and Laurent Libessart and Stephane Lassue and Didier Defer},
url = {http://www.sciencedirect.com/science/article/pii/S2352710219318248},
doi = {https://doi.org/10.1016/j.jobe.2019.101112},
issn = {2352-7102},
year = {2020},
date = {2020-01-01},
journal = {Journal of Building Engineering},
volume = {29},
pages = {101112},
abstract = {This article presents the numerical simulation of the energy effect of a solar mask created by a green wall on the thermal performance of a building envelope in a temperate climate in order to integrate it into thermal calculation codes. The document describes primarily the adaptation of a simplified prediction model. The simplified model was developed and validated on the basis of tests carried out with an experimental controlled occultation device by integrating all external parameters influencing heat exchanges (conduction, convection and radiation). A first validation of the numeric resolution algorithm of the preliminary model was realised. Then the model was supplemented by considerations related to the characteristics of the selected plants: ivy and Virginia creeper, such as the semi-transparent appearance of foliage plants and their geometric distribution. The numerical prediction was very close to the experimental values, and the mean error was about 1 °C. This difference makes it possible to validate the developed model.},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
This article presents the numerical simulation of the energy effect of a solar mask created by a green wall on the thermal performance of a building envelope in a temperate climate in order to integrate it into thermal calculation codes. The document describes primarily the adaptation of a simplified prediction model. The simplified model was developed and validated on the basis of tests carried out with an experimental controlled occultation device by integrating all external parameters influencing heat exchanges (conduction, convection and radiation). A first validation of the numeric resolution algorithm of the preliminary model was realised. Then the model was supplemented by considerations related to the characteristics of the selected plants: ivy and Virginia creeper, such as the semi-transparent appearance of foliage plants and their geometric distribution. The numerical prediction was very close to the experimental values, and the mean error was about 1 °C. This difference makes it possible to validate the developed model. |
2020Article de journal ER3 Auteurs : Libessart, Laurent; Djelal-Dantec, Chafika; de Caro, Pascale; Laiymani, Issam Comparative study of the tribological behaviour of emulsions and demoulding oils at the concrete/formwork interface Dans: Construction and Building Materials, vol. 239, p. 117826, 2020, ISSN: 0950-0618, (ACL). Résumé | Liens @article{LIBESSART2020117826,
title = {Comparative study of the tribological behaviour of emulsions and demoulding oils at the concrete/formwork interface},
author = {Laurent Libessart and Chafika Djelal-Dantec and Pascale de Caro and Issam Laiymani},
url = {http://www.sciencedirect.com/science/article/pii/S0950061819332799},
doi = {https://doi.org/10.1016/j.conbuildmat.2019.117826},
issn = {0950-0618},
year = {2020},
date = {2020-01-01},
journal = {Construction and Building Materials},
volume = {239},
pages = {117826},
abstract = {To ensure a performing demoulding, a release agent must resist the friction of concrete on the formwork. Emulsions are interesting alternatives that leads to a reduced consumption of oil on construction sites. The behaviours of two commercial emulsions are compared with two conventional demoulding oils. The adhesion energy calculated were favourable to the emulsions. The water evaporation kinetics leads to the measurements of film thickness. Tests with the tribometer have shown that the films produced from the emulsions generate a friction reduction of 30% and 40% at the concrete/formwork interface. Such performance can be explained by Wenzel's state of wettability, which facilitates the film fit into the formwork roughness.},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
To ensure a performing demoulding, a release agent must resist the friction of concrete on the formwork. Emulsions are interesting alternatives that leads to a reduced consumption of oil on construction sites. The behaviours of two commercial emulsions are compared with two conventional demoulding oils. The adhesion energy calculated were favourable to the emulsions. The water evaporation kinetics leads to the measurements of film thickness. Tests with the tribometer have shown that the films produced from the emulsions generate a friction reduction of 30% and 40% at the concrete/formwork interface. Such performance can be explained by Wenzel's state of wettability, which facilitates the film fit into the formwork roughness. |
2020Conférence ER3 Auteurs : Page, Jonathan; Libessart, Laurent; Djelal-Dantec, Chafika Use of biomasse fly ash in cementitious materials Advanced Materials for Sustainable Infrastructure Development, Ventura, USA, 2020, (ACTI). @conference{Page2020a,
title = {Use of biomasse fly ash in cementitious materials},
author = {Jonathan Page and Laurent Libessart and Chafika Djelal-Dantec},
year = {2020},
date = {2020-01-01},
booktitle = {Advanced Materials for Sustainable Infrastructure Development},
address = {Ventura, USA},
note = {ACTI},
keywords = {ER3},
pubstate = {published},
tppubtype = {conference}
}
|
2020Article de journal ER3 Auteurs : Leussa, Claudia Charlotte Tchamo; Libessart, Laurent; Djelal-Dantec, Chafika; Djangang, Chantale Njiomou; Elimbi, Antoine Pozzolanic activity of kaolins containing aluminum hydroxide Dans: Scientific Reports, vol. 10, no. 1, 2020. Liens @article{Leussa2020,
title = {Pozzolanic activity of kaolins containing aluminum hydroxide},
author = {Claudia Charlotte Tchamo Leussa and Laurent Libessart and Chafika Djelal-Dantec and Chantale Njiomou Djangang and Antoine Elimbi},
doi = {10.1038/s41598-020-70146-3},
year = {2020},
date = {2020-08-01},
journal = {Scientific Reports},
volume = {10},
number = {1},
publisher = {Springer Science and Business Media LLC},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
|
2019Conférence ER3 Auteurs : Amziane, S; Djelal-Dantec, Chafika; El-Cheikh, K; Fabbris, F; Fataei, S; Feys, D; Greim, M; Ivanova, I; Keller, H; Khayat, K; Libessart, Laurent; Mechcherine, V; Navarette, I; Perrot, A; Secrieru, E; Sonebi, M; Vanhove, Yannick An overview of RILEM TC MRP round-robin testing of concrete and mortar rheology in Bethune France, May 2018 2nd International RILEM Conference Rheology and Processing of Contruction Materials (RheoCon2), 9th International RILEM Symposium Self-Compacting Concerte (SCC9), Dresden, Germany, 2019, (ACTI). @conference{Amzi2019a,
title = {An overview of RILEM TC MRP round-robin testing of concrete and mortar rheology in Bethune France, May 2018},
author = {S Amziane and Chafika Djelal-Dantec and K El-Cheikh and F Fabbris and S Fataei and D Feys and M Greim and I Ivanova and H Keller and K Khayat and Laurent Libessart and V Mechcherine and I Navarette and A Perrot and E Secrieru and M Sonebi and Yannick Vanhove},
year = {2019},
date = {2019-01-01},
booktitle = {2nd International RILEM Conference Rheology and Processing of Contruction Materials (RheoCon2), 9th International RILEM Symposium Self-Compacting Concerte (SCC9)},
address = {Dresden, Germany},
note = {ACTI},
keywords = {ER3},
pubstate = {published},
tppubtype = {conference}
}
|
2019Conférence ER3 Auteurs : Djelal-Dantec, Chafika; Libessart, Laurent; Vanhove, Yannick Tribologie et phénoménologie des interfaces béton/coffrage Journées Nationales du Bétons, JNB’19, Hammamet, Tunisie, 2019, (ACTI). @conference{Djel2019b,
title = {Tribologie et phénoménologie des interfaces béton/coffrage},
author = {Chafika Djelal-Dantec and Laurent Libessart and Yannick Vanhove},
year = {2019},
date = {2019-04-01},
booktitle = {Journées Nationales du Bétons, JNB’19},
address = {Hammamet, Tunisie},
note = {ACTI},
keywords = {ER3},
pubstate = {published},
tppubtype = {conference}
}
|
2019Actes ER3 Auteurs : Laiymani, I; Libessart, Laurent; Hammouni, S; Djelal-Dantec, Chafika; Vanhove, Yannick Emulsion effects on the friction on the formwork/concrete interface Arras, 2019, ISBN: 978-2-35158-230-5, (ACTI). @proceedings{Laiy2019a,
title = {Emulsion effects on the friction on the formwork/concrete interface},
author = {I Laiymani and Laurent Libessart and S Hammouni and Chafika Djelal-Dantec and Yannick Vanhove},
editor = {RILEM},
isbn = {978-2-35158-230-5},
year = {2019},
date = {2019-05-01},
booktitle = {Proceeding of the International RILEM Workshop on Rheological Measurements of Cement-based Materials (IRWRMC’18), RILEM PRO 132},
address = {Arras},
note = {ACTI},
keywords = {ER3},
pubstate = {published},
tppubtype = {proceedings}
}
|
2019Conférence ER3 Auteurs : Libessart, Laurent; Laiymani, Issam; Djelal-Dantec, Chafika; Vanhove, Yannick Influence des émulsions sur le frottement du béton 37èmes Rencontres Universitaires de Génie Civil, Nice, 2019, (ACTN). @conference{Libe2019b,
title = {Influence des émulsions sur le frottement du béton},
author = {Laurent Libessart and Issam Laiymani and Chafika Djelal-Dantec and Yannick Vanhove},
year = {2019},
date = {2019-06-01},
booktitle = {37èmes Rencontres Universitaires de Génie Civil},
address = {Nice},
note = {ACTN},
keywords = {ER3},
pubstate = {published},
tppubtype = {conference}
}
|
2019Conférence ER3 Auteurs : Libessart, Laurent; Djelal-Dantec, Chafika; Vanhove, Yannick Influence of concretes thixotropy on the tribological properties One-Day Feedback – Round Robin Test “Comparison of Concrete Rheometers – International Tests at the Artois University (IUT Bethune), Paris, 2019, (COM). @conference{Libe2019c,
title = {Influence of concretes thixotropy on the tribological properties},
author = {Laurent Libessart and Chafika Djelal-Dantec and Yannick Vanhove},
year = {2019},
date = {2019-11-01},
booktitle = {One-Day Feedback – Round Robin Test “Comparison of Concrete Rheometers – International Tests at the Artois University (IUT Bethune)},
address = {Paris},
note = {COM},
keywords = {ER3},
pubstate = {published},
tppubtype = {conference}
}
|
2019Conférence ER3 Auteurs : Page, Jonathan; Libessart, Laurent; Djelal-Dantec, Chafika; Laiymani, Issam Feasability of using biomass fly ash in cementitious materials International Conference on Smart Materials for Sustainable Construction, SMASCO, Lulea, Sweden, 2019, (ACTI). @conference{Page2019b,
title = {Feasability of using biomass fly ash in cementitious materials},
author = {Jonathan Page and Laurent Libessart and Chafika Djelal-Dantec and Issam Laiymani},
year = {2019},
date = {2019-01-01},
booktitle = {International Conference on Smart Materials for Sustainable Construction, SMASCO},
address = {Lulea, Sweden},
note = {ACTI},
keywords = {ER3},
pubstate = {published},
tppubtype = {conference}
}
|
2018Article de journal ER3 Auteurs : Tilioua, Amine; Libessart, Laurent; Lassue, Stéphane Characterization of the thermal properties of fibrous insulation materials made from recycled textile fibers for building applications : Theoretical and experimental analyses Dans: Applied Thermal Engineering, vol. 142, p. 56 - 67, 2018, ISSN: 1359-4311, (ACL). Résumé | Liens @article{TILIOUA201856,
title = {Characterization of the thermal properties of fibrous insulation materials made from recycled textile fibers for building applications : Theoretical and experimental analyses},
author = {Amine Tilioua and Laurent Libessart and Stéphane Lassue},
url = {http://www.sciencedirect.com/science/article/pii/S1359431117355473},
doi = {https://doi.org/10.1016/j.applthermaleng.2018.06.071},
issn = {1359-4311},
year = {2018},
date = {2018-01-01},
journal = {Applied Thermal Engineering},
volume = {142},
pages = {56 - 67},
abstract = {The present study focuses on the thermal characterization of an insulation material made from recycled textile fibers for building applications, which qualifies as a semi-transparent medium. Experimental and numerical studies have been carried out to determine the radiative flux ratio for such a recycled textile fiber-based insulation for three thicknesses (5.35 mm, 5.67 mm and 6.64 mm). The inverse method, which relies on reflection and transmission measurements using a Fourier-Transform Infrared Spectrometer coupled to an integrating sphere, has been applied along with a least squares procedure. The relevant radiative properties of recycled textile insulation material are obtained by minimizing the deviation between experimental and theoretical data. The effective thermal conductivity of the fibrous insulation is measured at room temperature by means of a fluxmeter device. The radiative thermal conductivity is estimated by implementing the Rosseland model, while phonic conductivity is derived from the effective thermal conductivity. The radiative thermal conductivity displays a very limited effect in comparison with phonic thermal conductivity; the latter varies according to thickness, which in turn is determined by fiber density and size. Phonic thermal conductivity accounts for 26% of the effective thermal conductivity and moreover constitutes a large share (74%) relative to the radiative conductivity. The maximum radiative thermal conductivity value equals 0.0102 W m−1 K−1 for a thickness of 5.67 mm, with this value dropping slightly to 0.010 W m−1 K−1 for a thickness of 6.46 mm, and to a minimum value of 0.0096 W m−1 K−1 at a 5.35-mm thickness.},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
The present study focuses on the thermal characterization of an insulation material made from recycled textile fibers for building applications, which qualifies as a semi-transparent medium. Experimental and numerical studies have been carried out to determine the radiative flux ratio for such a recycled textile fiber-based insulation for three thicknesses (5.35 mm, 5.67 mm and 6.64 mm). The inverse method, which relies on reflection and transmission measurements using a Fourier-Transform Infrared Spectrometer coupled to an integrating sphere, has been applied along with a least squares procedure. The relevant radiative properties of recycled textile insulation material are obtained by minimizing the deviation between experimental and theoretical data. The effective thermal conductivity of the fibrous insulation is measured at room temperature by means of a fluxmeter device. The radiative thermal conductivity is estimated by implementing the Rosseland model, while phonic conductivity is derived from the effective thermal conductivity. The radiative thermal conductivity displays a very limited effect in comparison with phonic thermal conductivity; the latter varies according to thickness, which in turn is determined by fiber density and size. Phonic thermal conductivity accounts for 26% of the effective thermal conductivity and moreover constitutes a large share (74%) relative to the radiative conductivity. The maximum radiative thermal conductivity value equals 0.0102 W m−1 K−1 for a thickness of 5.67 mm, with this value dropping slightly to 0.010 W m−1 K−1 for a thickness of 6.46 mm, and to a minimum value of 0.0096 W m−1 K−1 at a 5.35-mm thickness. |
2018Article de journal ER5 Auteurs : Libessart, Laurent; Kenai, Mohamed Amine Measuring thermal conductivity of green-walls components in controlled conditions Dans: Journal of Building Engineering, vol. 19, p. 258 - 265, 2018, ISSN: 2352-7102. Résumé | Liens @article{LIBESSART2018258,
title = {Measuring thermal conductivity of green-walls components in controlled conditions},
author = {Laurent Libessart and Mohamed Amine Kenai},
url = {http://www.sciencedirect.com/science/article/pii/S2352710217307660},
doi = {https://doi.org/10.1016/j.jobe.2018.05.016},
issn = {2352-7102},
year = {2018},
date = {2018-01-01},
journal = {Journal of Building Engineering},
volume = {19},
pages = {258 - 265},
abstract = {This study is the first stage of a larger multidisciplinary research program about the environmental performances and functions of green walls in urban ecosystems. It aims to determine how green-walls contribute to the thermal insulation of buildings by measuring the thermal conductivities of green-walls’ components in controlled conditions. The study focused on complex green-wall systems, i.e. with a structure containing substrate in opposition with green-walls based on climbing plants. The four substrates were materials found in commercial substrate combinations. To compare, the thermal conductivities on two plants are carried out. In dry conditions, they showed conductivities of 0.062 W/m °C for sphagnum moss (Sphagnum cristatum), 0.060W/m °C for outdoor planting mix, and 0.105 W/m °C for clay balls and 0.051 W/m °C for substrate from a green-wall. Vegetation conductivities were also measured for ivy (Hedera helix) and Virginia creeper (Parthenocissus quinquefolia). As expected, conductivities were quite high (between 0.220 and 0.274 W/m °C). With the building thermal simulation, green-walls are technically able to improve buildings’ insulation.},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
This study is the first stage of a larger multidisciplinary research program about the environmental performances and functions of green walls in urban ecosystems. It aims to determine how green-walls contribute to the thermal insulation of buildings by measuring the thermal conductivities of green-walls’ components in controlled conditions. The study focused on complex green-wall systems, i.e. with a structure containing substrate in opposition with green-walls based on climbing plants. The four substrates were materials found in commercial substrate combinations. To compare, the thermal conductivities on two plants are carried out. In dry conditions, they showed conductivities of 0.062 W/m °C for sphagnum moss (Sphagnum cristatum), 0.060W/m °C for outdoor planting mix, and 0.105 W/m °C for clay balls and 0.051 W/m °C for substrate from a green-wall. Vegetation conductivities were also measured for ivy (Hedera helix) and Virginia creeper (Parthenocissus quinquefolia). As expected, conductivities were quite high (between 0.220 and 0.274 W/m °C). With the building thermal simulation, green-walls are technically able to improve buildings’ insulation. |
2018Article de journal ER5 Auteurs : Kenaï, Mohamed-Amine; Libessart, Laurent; Lassue, Stéphane; Defer, Didier Impact of plants occultation on energy balance: Experimental study Dans: Energy and Buildings, vol. 162, p. 208 - 218, 2018, ISSN: 0378-7788. Résumé | Liens @article{KENAI2018208,
title = {Impact of plants occultation on energy balance: Experimental study},
author = {Mohamed-Amine Kenaï and Laurent Libessart and Stéphane Lassue and Didier Defer},
url = {http://www.sciencedirect.com/science/article/pii/S0378778817325495},
doi = {https://doi.org/10.1016/j.enbuild.2017.12.024},
issn = {0378-7788},
year = {2018},
date = {2018-01-01},
journal = {Energy and Buildings},
volume = {162},
pages = {208 - 218},
abstract = {This paper presents the results of the validation of an experimental method for studying the thermal benefits of green façades. The main aim is to evaluate the impact of plants occultation on energy performance of a vertical wall in the temperate climate of the city of Lille in northern France. An experimental platform consisting of three identical prototypes (three boxes as thermal labs) has been designed and instrumented. Each prototype has been highly insulated from each face except from the vertical southern wall which was realized with a poor thermal conductivity material. The following measurements were taken: ambient temperature (outside and inside thermal labs), external and internal surface temperatures of southern walls, heat fluxes transferred through south verticals walls (reference and vegetalized walls), solar incident radiation and wind velocity variation under instantaneous real climatic conditions. This enabled the analysis of the variation of energy balance according to the presence or not of a shading effect on the south vertical walls as well as their coverage rate. Several tests were performed on the three experimental thermal labs by imposing a leaf coverage rate which differs during each measurement. The results have shown that masking reduces the outside temperature and enhances the interior thermal comfort especially during summer.},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
This paper presents the results of the validation of an experimental method for studying the thermal benefits of green façades. The main aim is to evaluate the impact of plants occultation on energy performance of a vertical wall in the temperate climate of the city of Lille in northern France. An experimental platform consisting of three identical prototypes (three boxes as thermal labs) has been designed and instrumented. Each prototype has been highly insulated from each face except from the vertical southern wall which was realized with a poor thermal conductivity material. The following measurements were taken: ambient temperature (outside and inside thermal labs), external and internal surface temperatures of southern walls, heat fluxes transferred through south verticals walls (reference and vegetalized walls), solar incident radiation and wind velocity variation under instantaneous real climatic conditions. This enabled the analysis of the variation of energy balance according to the presence or not of a shading effect on the south vertical walls as well as their coverage rate. Several tests were performed on the three experimental thermal labs by imposing a leaf coverage rate which differs during each measurement. The results have shown that masking reduces the outside temperature and enhances the interior thermal comfort especially during summer. |
2018Conférence ER3 Auteurs : Libessart, Laurent; Lahlou, Amine; Djelal-Dantec, Chafika; Vanhove, Yannick; Mateo, Sandrine Influence of the emulsions to the interface formwork/concrete 2nd Edition of the International Workshop on Durability and Sustainability of Concrete Structures (DSCS 2018), Moscow, Russia, 2018, (ACTI). @conference{Libe2018a,
title = {Influence of the emulsions to the interface formwork/concrete},
author = {Laurent Libessart and Amine Lahlou and Chafika Djelal-Dantec and Yannick Vanhove and Sandrine Mateo},
year = {2018},
date = {2018-06-01},
booktitle = {2nd Edition of the International Workshop on Durability and Sustainability of Concrete Structures (DSCS 2018)},
address = {Moscow, Russia},
note = {ACTI},
keywords = {ER3},
pubstate = {published},
tppubtype = {conference}
}
|
2018Conférence ER3 Auteurs : Libessart, Laurent; Djelal-Dantec, Chafika; Joly, N; Vanhove, Yannick; Martin, P Utilisation des huiles recyclées pour le décoffrage du béton – Etude de l’esthétique des parements Journées d’Etude Techniques de l’Association Franco-Maghrebine de Mécanique et des Matériaux (AF3M), JET’2018, Marrakech, 2018, (ACTI). @conference{Libe2018b,
title = {Utilisation des huiles recyclées pour le décoffrage du béton – Etude de l’esthétique des parements},
author = {Laurent Libessart and Chafika Djelal-Dantec and N Joly and Yannick Vanhove and P Martin},
year = {2018},
date = {2018-05-01},
booktitle = {Journées d’Etude Techniques de l’Association Franco-Maghrebine de Mécanique et des Matériaux (AF3M), JET’2018},
address = {Marrakech},
note = {ACTI},
keywords = {ER3},
pubstate = {published},
tppubtype = {conference}
}
|
2018Conférence ER3 Auteurs : Leussa, C Tchamo; Djangang, C Njiomou; Elimbi, A; Libessart, Laurent; Djelal-Dantec, Chafika Effects of aluminum hydroxide on the pozzolanic properties of kaolinitic clays The doctoral research and training unit for chemistry and application (URFD-CA) – PhD Students seminars in chemistry and application, Ed 2018, Yaoudé, Cameroun, 2018, (COM). @conference{Tcha2018a,
title = {Effects of aluminum hydroxide on the pozzolanic properties of kaolinitic clays},
author = {C Tchamo Leussa and C Njiomou Djangang and A Elimbi and Laurent Libessart and Chafika Djelal-Dantec},
year = {2018},
date = {2018-01-01},
booktitle = {The doctoral research and training unit for chemistry and application (URFD-CA) – PhD Students seminars in chemistry and application, Ed 2018},
address = {Yaoudé, Cameroun},
note = {COM},
keywords = {ER3},
pubstate = {published},
tppubtype = {conference}
}
|
2018Article de journal ER5 Auteurs : Tilioua, A; Libessart, Laurent; Lassue, Stéphane Characterization of the thermal properties of fibrous insulation materials made from recycled textile fibers for building applications: Theoretical and experimental analyses Dans: Applied Thermal Engineering, vol. 142, p. 56-67, 2018, (cited By 3). Liens @article{Tilioua201856b,
title = {Characterization of the thermal properties of fibrous insulation materials made from recycled textile fibers for building applications: Theoretical and experimental analyses},
author = {A Tilioua and Laurent Libessart and Stéphane Lassue},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85049113102&doi=10.1016%2fj.applthermaleng.2018.06.071&partnerID=40&md5=68d00d112307bebf13b9e3ad65b3bbc0},
doi = {10.1016/j.applthermaleng.2018.06.071},
year = {2018},
date = {2018-01-01},
journal = {Applied Thermal Engineering},
volume = {142},
pages = {56-67},
note = {cited By 3},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2017Article de journal ER5 Auteurs : Kenai, Mohamed-Amine; Libessart, Laurent; Lassue, Stéphane; Defer, Didier Impact of plants occultation on energy balance: Experimental study Dans: Energy and Buildings, 2017, (ACL). @article{mohamed2017impact,
title = {Impact of plants occultation on energy balance: Experimental study},
author = {Mohamed-Amine Kenai and Laurent Libessart and Stéphane Lassue and Didier Defer},
year = {2017},
date = {2017-01-01},
journal = {Energy and Buildings},
publisher = {Elsevier},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2016Article de journal ER5 Auteurs : Tilioua, Amine; Libessart, Laurent; Jeandel, Gérard; Lassue, Stéphane Determination of radiative properties of polyester batting insulation material from hemispherical transmittance and reflectance measurements Dans: Applied Thermal Engineering, vol. 105, p. 594 - 604, 2016, ISSN: 1359-4311, (ACL). Résumé | Liens @article{TILIOUA2016594,
title = {Determination of radiative properties of polyester batting insulation material from hemispherical transmittance and reflectance measurements},
author = {Amine Tilioua and Laurent Libessart and Gérard Jeandel and Stéphane Lassue},
url = {http://www.sciencedirect.com/science/article/pii/S1359431116303428},
doi = {https://doi.org/10.1016/j.applthermaleng.2016.03.050},
issn = {1359-4311},
year = {2016},
date = {2016-01-01},
journal = {Applied Thermal Engineering},
volume = {105},
pages = {594 - 604},
abstract = {This work presents a study on the thermal characterization of semi-transparent polyester batting insulation material for building application. This material is consisting of recycled plastic waste based polyester fibers with constant diameters. Thus, the effective thermal conductivity of this material is determined using fluxmeter devices. The radiative properties of the polyester batting (i.e. albedo, optical thickness, absorptance, etc.) have been obtained for different thicknesses of the material with the inverse method, which is based on infrared experimental measurements of reflection and transmission in the wavelengths range of 2–21μm using a Fourier Transform Infrared Spectrometer. Thus, the radiative conductivity is determined by the Rosseland model. The radiative conductivity varies as a function of material thickness; this variation is due to the fiber density effect.},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
This work presents a study on the thermal characterization of semi-transparent polyester batting insulation material for building application. This material is consisting of recycled plastic waste based polyester fibers with constant diameters. Thus, the effective thermal conductivity of this material is determined using fluxmeter devices. The radiative properties of the polyester batting (i.e. albedo, optical thickness, absorptance, etc.) have been obtained for different thicknesses of the material with the inverse method, which is based on infrared experimental measurements of reflection and transmission in the wavelengths range of 2–21μm using a Fourier Transform Infrared Spectrometer. Thus, the radiative conductivity is determined by the Rosseland model. The radiative conductivity varies as a function of material thickness; this variation is due to the fiber density effect. |
2015Article de journal ER3 Auteurs : Libessart, Laurent; Djelal-Dantec, Chafika; de Caro, Pascale; Dubois, Isabelle Correlation between adhesion energy of release agents on the formwork and demoulding performances Dans: Construction and Building Materials, vol. 76, p. 130 - 139, 2015, ISSN: 0950-0618, (ACL). Résumé | Liens @article{libe2015a,
title = {Correlation between adhesion energy of release agents on the formwork and demoulding performances},
author = {Laurent Libessart and Chafika Djelal-Dantec and Pascale de Caro and Isabelle Dubois},
url = {http://www.sciencedirect.com/science/article/pii/S095006181401280X},
doi = {http://dx.doi.org/10.1016/j.conbuildmat.2014.11.061},
issn = {0950-0618},
year = {2015},
date = {2015-01-01},
journal = {Construction and Building Materials},
volume = {76},
pages = {130 - 139},
abstract = {Abstract To ensure an easy demoulding of the concrete, the release agent must form a homogeneous film on the formwork to resist the casting concrete. The adherence of oil with the support was studied via the solid/liquid energy adhesion. This energy was calculated using the Zisman equation involving the angle of drop and the surface tension. Various formulations were studied, in order to establish correlations between their composition and the interfacial properties. Formwork release tests were performed to assess cladding aesthetics; it was possible to define a minimal level of adhesion energy to meet the facings quality after concrete demoulding.},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
Abstract To ensure an easy demoulding of the concrete, the release agent must form a homogeneous film on the formwork to resist the casting concrete. The adherence of oil with the support was studied via the solid/liquid energy adhesion. This energy was calculated using the Zisman equation involving the angle of drop and the surface tension. Various formulations were studied, in order to establish correlations between their composition and the interfacial properties. Formwork release tests were performed to assess cladding aesthetics; it was possible to define a minimal level of adhesion energy to meet the facings quality after concrete demoulding. |
2015Conférence ER5 Auteurs : Kenai, Mohammed-Amine; Libessart, Laurent; Lassue, Stéphane; Defer, Didier Performance énergétique des parois végétalisées XIIeme Colloque Interuniversitaire Franco-Québécois Sur la Thermique des Systèmes (CIFQ 2015), 2015, (ACTI). @conference{Kena2015A,
title = {Performance énergétique des parois végétalisées},
author = {Mohammed-Amine Kenai and Laurent Libessart and Stéphane Lassue and Didier Defer},
year = {2015},
date = {2015-01-01},
booktitle = {XIIeme Colloque Interuniversitaire Franco-Québécois Sur la Thermique des Systèmes (CIFQ 2015)},
note = {ACTI},
keywords = {ER5},
pubstate = {published},
tppubtype = {conference}
}
|
2014Conférence ER5 Auteurs : Kenai, Mohammed Amine; Libessart, Laurent; Lassue, Stéphane; Defer, Didier An experimental investigation of the thermal effects of green walls:impact of plants obscuration on energy balance 9th International Energy Forum on Advanced Building Skins, 2014, (ACTI). @conference{Kena2014A,
title = {An experimental investigation of the thermal effects of green walls:impact of plants obscuration on energy balance},
author = {Mohammed Amine Kenai and Laurent Libessart and Stéphane Lassue and Didier Defer},
year = {2014},
date = {2014-01-01},
booktitle = {9th International Energy Forum on Advanced Building Skins},
pages = {925-938},
note = {ACTI},
keywords = {ER5},
pubstate = {published},
tppubtype = {conference}
}
|
2014Article de journal ER3 Auteurs : Libessart, Laurent; Djelal-Dantec, Chafika; de Caro, Pascale Influence of the type of release oil on steel formwork corrosion and facing aesthetics Dans: Construction and Building Materials, vol. 68, p. 391 - 401, 2014, ISSN: 0950-0618, (ACL). Résumé | Liens @article{LIBESSART2014391,
title = {Influence of the type of release oil on steel formwork corrosion and facing aesthetics},
author = {Laurent Libessart and Chafika Djelal-Dantec and Pascale de Caro},
url = {http://www.sciencedirect.com/science/article/pii/S0950061814006849},
doi = {https://doi.org/10.1016/j.conbuildmat.2014.06.065},
issn = {0950-0618},
year = {2014},
date = {2014-01-01},
journal = {Construction and Building Materials},
volume = {68},
pages = {391 - 401},
abstract = {The quality of the concrete facings results from the implementation of release agents and the casing surface quality. It is interesting to characterize the behaviour of release agents over the lifetime of the formwork. This study is based on the many ones test physicochemical and esthetics realized on two types of surface of formwork like on three types of applications. In complement, the ageing of the casing formwork was characterized by electrochemical spectroscopy of impedance and thanks to the correlation with the aesthetic tests will allow to find from new mechanisms to the interfaces related to the studied oil’s formulations.},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
The quality of the concrete facings results from the implementation of release agents and the casing surface quality. It is interesting to characterize the behaviour of release agents over the lifetime of the formwork. This study is based on the many ones test physicochemical and esthetics realized on two types of surface of formwork like on three types of applications. In complement, the ageing of the casing formwork was characterized by electrochemical spectroscopy of impedance and thanks to the correlation with the aesthetic tests will allow to find from new mechanisms to the interfaces related to the studied oil’s formulations. |
2012Article de journal ER5 Auteurs : Tilioua, A; Libessart, Laurent; Joulin, Annabelle; Lassue, Stéphane Etude des proprietes thermo-physiques des isolants fibreux textile, Annales du BTP, fevrier 2012 Dans: 2012, (ACL). @article{Tilioua2012,
title = {Etude des proprietes thermo-physiques des isolants fibreux textile, Annales du BTP, fevrier 2012},
author = {A Tilioua and Laurent Libessart and Annabelle Joulin and Stéphane Lassue},
year = {2012},
date = {2012-01-01},
note = {ACL},
keywords = {ER5},
pubstate = {published},
tppubtype = {article}
}
|
2008Article de journal ER3 Auteurs : Djelal-Dantec, Chafika; Caro, P De; Libessart, Laurent; Dubois, I; Pebere, N Comprehension of demoulding mechanics at the formwork/oil/concreteinterface , Materials and Structure, 41, n3 571-581, April 2008 Dans: 2008, (ACL). @article{djel2008,
title = {Comprehension of demoulding mechanics at the formwork/oil/concreteinterface , Materials and Structure, 41, n3 571-581, April 2008},
author = {Chafika Djelal-Dantec and P De Caro and Laurent Libessart and I Dubois and N Pebere},
year = {2008},
date = {2008-01-01},
note = {ACL},
keywords = {ER3},
pubstate = {published},
tppubtype = {article}
}
|
