5 results on '"Maalouf, Chadi"'
Search Results
2. Hygrothermal and Acoustical Performance of Starch-Beet Pulp Composites for Building Thermal Insulation
- Author
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Karaky, Hamzé, Maalouf, Chadi, Bliard, Christophe, Moussa, Tala, El Wakil, Nadim, Lachi, Mohammed, Polidori, Guillaume, Groupe de Recherche en Sciences Pour l'Ingénieur - EA 4694 (GRESPI), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA), and Laboratoire de Thermomécanique - Unité de Thermique et Analyse Physique
- Subjects
porosity ,hygrothermal performance ,lcsh:Technology ,Article ,[SPI.MAT]Engineering Sciences [physics]/Materials ,sorption isotherm ,thermal conductivity ,lcsh:Microscopy ,lcsh:QC120-168.85 ,starch-Beet pulp ,[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph] ,starch–beet pulp ,[SPI.GCIV.CD]Engineering Sciences [physics]/Civil Engineering/Construction durable ,lcsh:QH201-278.5 ,lcsh:T ,acoustical performance ,Bio-based composite ,moisture buffering value ,lcsh:TA1-2040 ,[SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph] ,lcsh:Descriptive and experimental mechanics ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,permeability ,[SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction ,lcsh:Engineering (General). Civil engineering (General) ,lcsh:TK1-9971 - Abstract
This article deals with the elaboration and the characterization of an innovative 100% plant-based green composite made solely of beet pulp (BP) and potato starch (S). Using this type of material in insulation applications seems a good solution to reduce the CO₂ gas emissions in building. The influence of the starch amount on composite characteristics was studied. Four mixtures were considered with different S/BP mass ratios (0.1, 0.2, 0.3 and 0.4). The physical properties of these materials were studied in terms of porosity, apparent and absolute densities, thermal conductivity, and hygric properties. The influence of humidity content on acoustical properties was studied as a function of frequency. Test results show a real impact of both starch and humidity contents on the hygrothermal and acoustical properties of the studied material due to the porosity. The composite with the lowest amount of starch (S/BP = 0.1) seems to be the optimal composition in terms of the hygrothermal and acoustical behaviors.
- Published
- 2018
3. Hygrothermal performance of various Typha–clay composite.
- Author
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Niang, Ibrahim, Maalouf, Chadi, Moussa, Tala, Bliard, Christophe, Samin, Etienne, Thomachot-Schneider, Céline, Lachi, Mohamed, Pron, Hervé, Mai, Ton Hoang, and Gaye, Salif
- Abstract
This article deals with the influence of both morphology and amount of Typha on hygrothermal behavior of a Typha–clay composite for building application. An agromaterial containing the fiber mix of Typha Australis and clay was made in three samples: three fiber mixtures were prepared with different amounts Typha and cut type (transversal or longitudinal). The physical properties of these materials were studied in terms of porosity, apparent and absolute density, thermal conductivity, and hygric properties. Results show a real impact of the Typha fraction type and its volume content on hygrothermal properties of the studied material due to the porosity. The transversal fraction of Typha (80% in volume weight) seems to be the optimal composition for a better hygrothermal behavior. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
4. Spent Coffee Grounds as Building Material for Non-Load-Bearing Structures.
- Author
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Moussa, Tala, Maalouf, Chadi, Bliard, Christophe, Abbes, Boussad, Badouard, Céline, Lachi, Mohammed, do Socorro Veloso Sodré, Silvana, Bufalino, Lina, Bogard, Fabien, Beaumont, Fabien, and Polidori, Guillaume
- Subjects
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COFFEE grounds , *CONSTRUCTION materials , *COFFEE waste , *STARCH , *INSULATING materials , *THERMAL insulation , *BRICKS - Abstract
The gradual development of government policies for ecological transition in the modern construction sector leads researchers to explore new alternative and low environmental impact materials with a particular focus on bio-sourced materials. In this perspective, the mechanical, thermal insulation, and the sound absorption performances of a spent coffee grounds/potato starch bio-based composite were analyzed for potential application in buildings. Based on thermal conductivity and diffusivity tests, the coffee grounds waste biocomposite was characterized as an insulating material comparable with conventional thermal insulation materials of plant origin. Acoustical tests revealed absorption coefficients in the same range as other conventional materials used in building acoustical comfort. This bio-sourced material presented a sufficient compressive mechanical behavior for non-load-bearing structures and a sufficient mechanical capacity to be shaped into building bricks. Mechanical, thermal, and acoustic performances depend on the moisture environment. The groundwork was laid for an initial reflection on how this composite would behave in two opposite climates: the continental climate of Reims in France and the tropical climate of Belém in Brazil. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
5. Hygric Behavior of Viticulture By-Product Composites for Building Insulation.
- Author
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Badouard, Céline, Maalouf, Chadi, Bliard, Christophe, Polidori, Guillaume, and Bogard, Fabien
- Subjects
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STARCH , *VITICULTURE , *MOISTURE measurement , *INSULATING materials , *DISTRIBUTION isotherms (Chromatography) - Abstract
One possible approach to reducing the environmental impacts associated with the building sector is the development and use of bio-based building materials. The objective of this study is to determine the water properties of bio-based insulation materials, derived from winegrowing co-products, which promote energy efficiency. The water performance of these new bio-based materials is based on the measurement of the moisture buffer value, the sorption isotherm, and the water vapor permeability. Four by-products are analyzed: stalks, grape pomace, crushed stalks, and skins; they are combined with a potato starch binder. The performance of these composites is compared to two other bio-based composites (hemp/starch and beet pulp/starch). The stalk/starch composite can be classified as a hygroscopic and breathable material with excellent moisture retention capacity. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
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