AZZEDINE Benyahia

ADDOUR Yakout

Caractérisation expérimentale et numérique du comportement mécanique d’un composite à base d'une matrice thermodurcissable renforcée par des fibres végétales de la région de M’sila

Boutchicha Selsabil , Hamouche Halla

Traitement des eaux usées par méthodes électrocoagulation, matériau inorganique et biomasse

Saoudi Khaled

Utilisation de la boue de barrage comme additif dans un matériau composite

سعدي صباح

الانبعاثات الغازية الناتجة من المصانع و تأثيرها على البيئة

بوعكازي زبيدة , عطاللاوي رقية الخنساء

دراسة تحضير الهيدروجين الأخضر كطاقة بديلة

Mouissa Fadhila

Contribution à Compréhension et à la Modélisation du Comportement Mécanique thermique et Acoustique de Matériaux Composites à Base de Déchets

Laib Nouri

المواد المركبة ذات مصفوفة من راتنج مقواة يألياف

Kouadri Zainate

تأثير المعالجات الكيميائية على الخواص الميكانيكية لمركب مقوى بألياف نباتية وذو أساس من مصفوفة غير عضوية

Deghfel Nadir

Etude de la possibilté de fixation des molécules organiques acide-base sur des surfaces d'argile et d'un mélange d'argile et de fibres végétales de la région de M'sila

بن شنيت جميلة

تحضير ودراسة خصائص مادة مركبة ذات مصفوفة من الفينيل أستر غير المشبع مقواة بنفايات معدنية لمصنع أنابيب مغرب وألياف نباتية (الحلفاء)

محرز محمد

دراسة مقارنة الخصائص الفيزيوكيميائية لمياه الصرف الصحي لثلاث محطات معالجة (برج بوعريريج-المسيلة - بوسعادة)

Khatout Karima , Barka Houda

L'effet des traitements chimiques sur la structure morphologique de fibres de LUFFA

Nouibat Hamza

L'adsorption de colorant Rouge de Congo par l'argile de la région de Bou-saada

Djemiat Hakima , Merrouche Zoubida

Etude physico-chimique et biologique de l'espèce -CRATAEGUS-

Benhaddad Sabah , Aichouche Amal

Contribution à l'étude de la gestion des déchets ménagers de la ville de M'sila

سعدي الطاهر

دراسة قابلية امتزاز محلول صبغة أحمر الكونغو على سطح مادة الدباغ

Kaouache Mayouf , Kouici Fatah

Etude comparative de l'adsorption d'un colorant anionique sur un adsorbant à base d'un matériau végétale Alf (Stipa Tenacissima)

أحمادي فيصل

دراسة امتزاز أحمر الكونغو على الطين الأحمر

Treatment of wastewater from the city of M'sila

Citation

Azzedine BENYAHIA , ,(2024-05-06), Treatment of wastewater from the city of M'sila,2ème Colloque de chimie CNC2@2024,Université Mohamed Boudiaf M'sila

Étude des performance mécaniques des matériaux composites à base de sciure de bois

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Azzedine BENYAHIA , ,(2024-05-06), Étude des performance mécaniques des matériaux composites à base de sciure de bois,2ème Colloque de chimie CNC2@2024,Université Mohamed Boudiaf M'sila

Study Day on Green Hydrogen

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Azzedine BENYAHIA , ,(2024-02-05), Study Day on Green Hydrogen,Study Day on Green Hydrogen,Université Mohamed Boudiaf M'sila

Effect of chemical treatment on mechanical properties of Alfa fiber/ Unsaturated Polyester Composite

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Azzedine BENYAHIA , ,(2023-10-23), Effect of chemical treatment on mechanical properties of Alfa fiber/ Unsaturated Polyester Composite,1St International Seminar on Chemical Processes ans Sustainable Development,Skikda

Les argiles sont utilisées dans de nombreux domaines (construction, pharmacie, agriculture, etc.), ce qui motive les experts et les scientifiques à étudier ses propriétés physico-chimiques et sa composition minérale afin d'améliorer son utilisation dans des domaines spécifiques. Notre recherche vise à étudier la composition minérale et les propriétés physico-chimiques des argiles naturelles en raison de leur importance dans le domaine des propriétés d'application. Les propriétés physico-chimiques ont été étudiées- nous n'avons trouvé qu'une argile jaune avec un pH de 7,37, probablement en raison de sels solubles et alcalins tels que des bicarbonates ou des silicates de métaux alcalins. La valeur d'humidité (W) de l'argile jaune (1,31 %) est inférieure, indiquant qu'elle n'est pas hygroscopique. L'indice de gonflement Ig de l'argile jaune (1,49 %) est gonflé facilement. En fonction de la taille et du diamètre des particules (selon la classification ASTM), les échantillons d'argile sont classés en sable fin, moyen et grossier. La méthode FTIR de caractérisation de l'argile était cohérente avec les résultats de l'analyse. L'existence du quartz et de la kaolinite est bien confirmée (caractéristiques des bandes vibratoires de déformation de la liaison Si-O et des vibrations d'étirement du quartz Si-O à 470,4 cm-1, 712 cm-1 et 798,4 cm-1). L'analyse thermogravimétrique TGA a été utilisée pour suivre la stabilité thermique de l'argile. Cela a permis de suivre la perte de masse de l'échantillon en fonction de la température (la perte totale d'argile jaune était d'environ 5,56%). Les phases minérales dans l'échantillon sont identifiées par diffraction des rayons X (XRD).

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KARIMA Larkat , Azzedine BENYAHIA , Nadir DEGHFEL , meftah allal, ,(2023-10-23), Les caractéristiques physicochimiques et la composition minérale de l'argile jaune naturelle (M'sila).,1st International Seminar on Chemical Processes and Sustainable Development, (ISCPSD’23),skikda,algeria

Valorisation et traitement chimique des fibres végétales pour préparer des matériaux composites

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Azzedine BENYAHIA , ,(2023-10-18), Valorisation et traitement chimique des fibres végétales pour préparer des matériaux composites,1st International Webinar: Biodiversity Roles in Plants Protection-Arid Regions BRPP-AR: October 18th to 19th, 2023 (CRSTRA, Algeria),Alger

The effect of additives and chemical treatment on mechanical properties of a composite material

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Azzedine BENYAHIA , ,(2023-10-18), The effect of additives and chemical treatment on mechanical properties of a composite material,First National Conference on Advanced Materials and Their Application (NCAMA'2023,Tipaza Algeria

Valorisation et traitement chimique des fibres végétales pour préparer des matériaux composites

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Azzedine BENYAHIA , ,(2023-10-18), Valorisation et traitement chimique des fibres végétales pour préparer des matériaux composites,Troisième édition du séminaire des sciences d'interface chimie-Biologie (SNSICB, 18-19 October 2023),Université Mohamed Chérif Messaadia Souk Ahras

Valorisation Et Traitement Des Déchets Végétaux Pour Préparer Des Matériaux Composites.

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Azzedine BENYAHIA , ,(2023-09-26), Valorisation Et Traitement Des Déchets Végétaux Pour Préparer Des Matériaux Composites.,1er Séminaire national sur Le défi de la gestion des déchets entre destruction et valorisation,Université Abbes Leghrour Khenchela Algérie

VALORISATION AND CHEMICAL TREATMENT OF VEGETABLE FIBERS TO PREPARE COMPOSITE MATERIALS

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Azzedine BENYAHIA , ,(2023-09-26), VALORISATION AND CHEMICAL TREATMENT OF VEGETABLE FIBERS TO PREPARE COMPOSITE MATERIALS,has participated in 3rd International Conference on Innovative Academic Studies,Konya/Turkey

Étude et caractérisation d'un matériau composite à base des fibres végétales

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Azzedine BENYAHIA , ,(2023-09-25), Étude et caractérisation d'un matériau composite à base des fibres végétales,La Journée Mondiale des Pharmaciens & la 2ème Journée Nationale de Pharmacie Le 25 septembre 2023, Ain-Témouchent, Algérie,Ain-Témouchent

Valorisation et traitement chimiques des fibres végétales pour préparer des matériaux composites

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Azzedine BENYAHIA , ,(2023-09-25), Valorisation et traitement chimiques des fibres végétales pour préparer des matériaux composites,First National Symposium on: Water, Health and Environment Impact of Climate Changes,University Abbes Laghrour Khenchela Algeria

Study of the antibacterial and antioxidant activity of the “Punica granatum” plant from the M’sila region

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Azzedine BENYAHIA , ,(2023-09-25), Study of the antibacterial and antioxidant activity of the “Punica granatum” plant from the M’sila region,Journée Mondiale des Pharmaciens & la 2ème Journée Nationale de Pharmacie, Ain-Témouchent, Algérie,Ain-Témouchent

Study of the antibacterial and a and antioxidant activity of the “Punica granatum” plant from the M’sila region

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Azzedine BENYAHIA , ,(2023-09-04), Study of the antibacterial and a and antioxidant activity of the “Punica granatum” plant from the M’sila region,2nd International Conference on Contemporary Academic Research ICCAR 2023 on November 4-5, 2023 in Konya, Turkey,Konya-Turkey

Clays are used in a wide variety of fields (e.g. construction, pharmaceuticals, agriculture, etc.), motivating experts and scientists to study the physical-chemical properties of clays and their mineral composition, and to improve their use in their specific fields. Given its importance in the field of use, our research focused on studying the mineral composition of natural clays and their physical-chemical properties. Physical-chemical properties studied - we obtained only a yellow clay with a pH of 7.47, the W % of 1.38% is lower. The Ig swelling index (1.55%) swells slightly. The clay characterization method was revealed by FTIR in agreement with the results revealed by the analysis. The existence of kaolinite and quartz is well confirmed (Si-O bond deformation and Si-O elongation vibration band signatures of quartz located at 470.4 cm-1, 712 cm-1 and 798, 4 cm-1). Kaolinite or Si-group quartz at 1025cm-1) The thermal stability of the clay was monitored by ATG thermogravimetric analysis, which made it possible to track the loss of sample mass as a function of temperature (total loss of clay was approx. 5.56%). the spectral analysis of the d X-ray diffraction (XRD) indicates that it is composed of quartz, calcite and dolomite, which explains why our clay is heterogeneous, the mineralogical composition of the clay fraction of our material is quartz (12.68%) and calcite (50.35%) The results of the elemental chemical analysis (XRF) show that silica (26.42%) and calcium oxide (28.58%) are the major oxides in our sample.

Citation

KARIMA Larkat , Azzedine BENYAHIA , Nadir DEGHFEL , meftah allal, ,(2023-07-10), Elaboration and characterization of physicochemical properties and mineralogical study of natural clay (M'sila area).,5th International Conference on Applied Engineering and Natural Sciences,Konya, Turkey

The effect of additives and chemical treatment on mechanical properties of composite material

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Azzedine BENYAHIA , ,(2023-06-17), The effect of additives and chemical treatment on mechanical properties of composite material,THE NATIONALVIRTUAL CONFERENCE ALGERIAN CONFERENCE ON MECHANICS AND SOLAR ENERGY,Université Kasdi Merbah OUARGLA-ALGERIA

The effect of traitement chimique or preparation of material composite

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Azzedine BENYAHIA , ,(2023-06-09), The effect of traitement chimique or preparation of material composite,1st International Webinar « The city at the heart of sustainability and digital challenges: Perspectives on urban and environmental issues». CHSDC 2023.,USTHB – Algeria

Valorisation et traitement des fibres végétales pour préparer des matériaux composites

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Azzedine BENYAHIA , ,(2023-05-30), Valorisation et traitement des fibres végétales pour préparer des matériaux composites,Célébration de la Journée Mondiale de la Sclérose En Plaques, le 30 mai 2023 L’Association Santé au Travail, Sécurité, Hygiène et Environnement,Ain-Témouchent

Valorisation et traitement des fibres végétales pour préparer des matériaux composites

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Azzedine BENYAHIA , ,(2023-03-15), Valorisation et traitement des fibres végétales pour préparer des matériaux composites,First International Webinar on: Promotion and Exploitation of Plants of Ecological and Economic Interest,Université Abbes Laghrour Khenchela Algérie

Researchers are showing increasing interest in plant fiber reinforced composites due to their eco-friendliness, low density, low cost and amazing mechanical properties. However, some challenges remain for researchers in this field, most notably poor adhesion between the polymer matrix and the plant fibers, which reduces the mechanical properties of composites reinforced with these fibers. This study aims to improve the adhesion between the matrix and the reinforcement by chemically treating Alfa fibers (Stipa tenacissima) with a 3 wt% NaOH solution at different times (1, 3, 5 and 24 h). FTIR, DRX, GTA and tensile tests were conducted. XRD tests showed that the crystallinity index of 3% alkali treated Alfa fibers for 5 h increased by 36.26%, compared to that of untreated fibers. The results also revealed that the mechanical properties of composites reinforced with treated fibers outperformed those reinforced with untreated fibers. These findings can contribute to the development of high mechanical performance composites, which can be competitive with those prepared with synthetic fibers. Keywords: composite, Stipa tenacissima, adhesion, tensile strength, alkaline treatment

Citation

AZZEDINE Melouki , Azzedine BENYAHIA , Chouki FARSI , Nadir DEGHFEL , Nouri LAIB , Mahmoud Lebid , , (2023), EFFECT OF ALKALINE TREATMENT ON MECHANICAL PROPERTIES OF ALFA FIBER/UNSATURATED POLYESTER COMPOSITE, Cellulose Chemistry and Technology, Vol:57, Issue:5, pages:607-615, Cellulose Chemistry and Technology

1st International Conference on Scientific and Academic Research ICSAR 2022

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AzzedineBENYAHIA , ,(2022-12-19); 1st International Conference on Scientific and Academic Research ICSAR 2022,,Asst. Prof. Dr. Umut ÖZKAYA

Determination of the regularity domain of crushed rock grain classes by video grain size anlysis (VDG)

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Azzedine BENYAHIA , ,(2022-12-13), Determination of the regularity domain of crushed rock grain classes by video grain size anlysis (VDG),1st International Conference on innovative materials for sustainable development,Université Badji Mokhtar Annaba

4 th International Conference on Applied Engineering and Natural Sciences November 10-13, 2022 : Konya, Turkey

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AzzedineBENYAHIA , ,(2022-11-22); 4 th International Conference on Applied Engineering and Natural Sciences November 10-13, 2022 : Konya, Turkey,,Asst. Prof. Dr. Umut ÖZKAYA

Amélioration et élaboration d'un matériau composite renforcé par les déchets de MAGHREB PIPE M'sila

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Azzedine BENYAHIA , ,(2022-10-23), Amélioration et élaboration d'un matériau composite renforcé par les déchets de MAGHREB PIPE M'sila,2nd International Seminar on Industrial Engineering and Applied Mathematics,Skikda University 20 Août 1955- Algérie

Study and physicochemical and mineralogical characterization of the natural yellow clay and soda from the region of Soubella and the natural bentonite and soda from Maghnia.

Citation

Azzedine BENYAHIA , ,(2022-09-10), Study and physicochemical and mineralogical characterization of the natural yellow clay and soda from the region of Soubella and the natural bentonite and soda from Maghnia.,1st International Conference on Innovative Academic Studies,Konya/Turkey

Comparative study of the physico-chemical characteristics and mineralogical composition of natural clays (red and green) of the region of Soubella M'Sila

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Azzedine BENYAHIA , ,(2022-09-10), Comparative study of the physico-chemical characteristics and mineralogical composition of natural clays (red and green) of the region of Soubella M'Sila,1st International Conference on Innovative Academic Studies,Konya/Turkey

Characterization of the mineral composition of the clay of the Soubella region and the bentonite of Mighnia

Citation

Azzedine BENYAHIA , ,(2022), Characterization of the mineral composition of the clay of the Soubella region and the bentonite of Mighnia,4th International Conference on Applied Engineering and Natural Sciences,Konya - Turkey

Amélioration et élaboration d'un matériau composite renforcé par les déchets de MAGHREB PIPE M'sila

Citation

Azzedine BENYAHIA , ,(2022), Amélioration et élaboration d'un matériau composite renforcé par les déchets de MAGHREB PIPE M'sila,2nd International Seminar on Industrial Engineering and Applied Mathematics,SKIKDA- Algérie

Environmental and energy conservation pressure has led to a dramatic increase in the need for economically feasible lightweight materials that can be better substituted for non-biodegradable materials in reinforced composites. To this end, this study examines composite materials prepared from unsaturated polyester resins reinforced with treated and untreated Alfa fibers. Fiber treatment was carried out by NaOH solution of 5% concentration at different times (1, 3, 5 and 24 h). The strength and flexural modulus of the composites were evaluated according to the ASTM D790 test method. The analytical results indicate that the fibers’ alkaline pretreatment time had a positive influence on the mechanical properties of the composites. Keywords: composite, Stipa tenacissima, adhesion, flexion, hydrophilic, alkaline treatment

Citation

Azzedine BENYAHIA , Nouri LAIB , Nadir DEGHFEL , yakout.addour@univ-msila.dz, , (2022), Effect of alkaline treatment time on flexural properties of Alfa fiber/Unsaturated polyester composite, Cellulose Chemistry and Technology, Vol:56, Issue:9, pages:1081-1088, Lilia Daringa

Clays are used in a variety of fields (construction, pharmacy, agriculture, etc.), which motivates experts and scientists to study the physicochemical properties of clay and its mineral composition, and to improve its use in specific fields. Due to its importance in the field of application properties, our research aims to study the mineral composition of natural clays and their physicochemical properties. Physicochemical properties were studied - we only got a yellow clay with a pH of 7.47, probably due to soluble and alkaline salts such as bicarbonates or silicates of alkali metals (usually in the composition of clays). The yellow clay (1.38%) has a lower moisture (W %) value, indicating that it is not hygroscopic. The Ig swelling index (%) of yellow clay (1.55%) is easy to swell. Clay samples are classified into fine, medium, and coarse sand by particle size (as classified by ASTM) and their diameter. The clay characterization method revealed by FTIR was consistent with the results revealed by the analysis. The existence of kaolinite and quartz is well confirmed (characteristics of Si-O bond deformation vibrational bands and Si-O stretching vibrations of quartz at 470.4 cm-1, 712 cm-1 and 798.4 cm-1).The thermal stability of the clay was tracked by TGA thermogravimetric analysis which made it possible to track the mass loss of the sample as a function of temperature (total yellow clay loss was about 5.56%). X-ray diffraction (XRD) is used to identify the mineral phases present in the sample. Keywords: clay, physicochemical properties, mineralogical compositions.

Citation

KARIMA Larkat , Azzedine BENYAHIA , Nadir DEGHFEL , NEDJMA Lahmar , meftah.allal@unuv-biskra.dz, Belfar issam, brahim ben saoucha, ,(2022), Physicochemical properties and mineral composition of natural yellow clay ( M'sila ).,2nd International Conference on Engineering and Applied Natural Sciences,Konya, Turkey

This study investigates the effect of the chemical treatment of sawdust on the mechanical and thermal properties of a clay composite reinforced with sawdust in variable mass proportions: 0.5, 1, 1.5, 2 and 2.5%, intended for use as brick in rural houses in desert areas. The sawdust was chemically treated with 5 wt% NaOH and 0.01 wt% KMnO4 solutions. The mechanical test results of the reinforced composite with alkali-treated sawdust show an increase in flexural and compression strength, reaching a maximum value of 0.89 and 4.85 MPa, respectively. However, the thermal test results show a significant decrease in the thermal conductivity of the sawdust-reinforced composite. The best result recorded is that of untreated sawdust, which has a value of 0.37 (W.m−1.K−1) compared to the one reinforced with treated sawdust.

Citation

Mokhtar DJEHICHE , Azzedine BENYAHIA , Fadhila Mouissa, , (2021-04-28), The effect of chemical treatment on the mechanical and thermal properties of composite materials based on clay reinforced with sawdust, Matériaux & Techniques, Vol:109, Issue:101, pages:11, EDP Sciences

This study investigates the effect of the chemical treatment of sawdust on the mechanical and thermal properties of a clay composite reinforced with sawdust in variable mass proportions: 0.5, 1, 1.5, 2 and 2.5%, intended for use as brick in rural houses in desert areas. The sawdust was chemically treated with 5 wt% NaOH and 0.01 wt% KMnO4 solutions. The mechanical test results of the reinforced composite with alkali-treated sawdust show an increase in flexural and compression strength, reaching a maximum value of 0.89 and 4.85 MPa, respectively. However, the thermal test results show a significant decrease in the thermal conductivity of the sawdust-reinforced composite. The best result recorded is that of untreated sawdust, which has a value of 0.37 (W.m−1.K−1) compared to the one reinforced with treated sawdust.

Citation

ZINE EL ABIDINE Rahmouni , Fadhila MOUISSA , Azzedine BENYAHIA , mokhjtar, , (2021), The effect of chemical treatment on the mechanical and thermal properties of composite materials based on clay reinforced with sawdust, Matériaux & Techniques, Vol:109, Issue:1, pages:1-11, EDP Science

The effect of concentration and processing time on the morphological structure of alpha fibers used as reinforcement in composites

Citation

Azzedine BENYAHIA , yakout.addour@univ-msila.dz, ,(2021), The effect of concentration and processing time on the morphological structure of alpha fibers used as reinforcement in composites,1ST INTERNATIONAL WEBINAR ON BIOLOGICAL AND CHEMICAL ENGINEERING,Saad Dahlab University, Blida-1 Algeria

The degradation kinetics of bromothymol blue (BBT) in the presence of heated potassium persulfate (KPS) in acidic medium (pH3) was studied. Based on our calculation and simulation methods, we determined, for the first time, the rate constant of the reaction of BBT with sulfate radicals (k6) at 60 °C. By carrying out several experiences at various conditions of concentrations and temperature, we obtain an average value of k6 equal to (3.3 ± 0.3) x 108 M-1 s-1 and an activation energy equal to18.84 kJ/mol. On the other hand, we have also calculated the rate constant of the BTB reaction with the hydroxyl radical at 60 °C, equal to (1.3 ± 1) x 1010 M-1 s-1. Finally, based on our simulation model, we predicted the dominant radical(hydroxyl or sulfate) at different values of pH.

Citation

Mokhtar DJEHICHE , Cheikh MOKRANI , Azzedine BENYAHIA , NEDJMA Lahmar , ,(2021), Kinetic model for sulfate radical oxidation of bromothymol blue,7th International Conference on Advancement in Science and Technology,international islamic university malaysia

Manuscripts should Quarries and mines that exploit hematite ore Fe2O3 usually have a large quantity of waste rock with low iron content, stored in the slag heaps of quarries or mines without enrichment. This work consists in finding solutions to this product to make it more or less usable in industries. After chemical and mineralogical analysis of the whole product, the large percentage of existing chemical elements is the hematite ore Fe2O3 which has a low iron concentration. To improve its iron content, it must be treated by chemical and hydro mechanical processes that are economically viable. Since it remains in the product heap, it will be degraded in the open air of the quarry by atmospheric chemical reactions. A certain amount of this stockpile is sampled at different locations in a heap to distinguish the chemical elements of the dominant product. The search for good enrichment techniques of these materials after their homogenization led us to choose among the main separation operations, those based on the difference of densities obtained by suspension in granulated Ferro-solutions composed of silicon and magnetite. From the results of the gravimetric separation, three fractions were obtained: an iron-rich fraction; a medium fraction; an iron-poor fraction <10%. According to the magnetic properties analysis, as a semi-separated product, the medium iron fraction will undergo a new enrichment sequence by high magnetic field separation. Keywords: Separation, Hematite, Heavy suspension, Magnetic properties, Enrichment

Citation

Azzedine BENYAHIA , , (2021), Evaluation of materials from the excavation of the Ouenza hematite deposit (North-East Algeria) by gravimetric enrichment, Natural Volatil and Essential Oils, Vol:8, Issue:4, pages:11529-11537, Natural Volatil and Essential Oils

This work is part of the development of local materials, such as vegetable fiber (palm fiber) and red clay from southern Algeria, widely used in the preparation of bricks as rural building materials. Vegetal fibers have very interesting properties, they are: renewable, biodegradable and low cost / lightness ratio. Their mechanical properties are very important. However, the predominant problem in this type of composite material is the weak adhesion of the matrix-fiber interface, probably attributed to the nature of the surface and the hydrophobic character of the natural fibers, thus leading to weak mechanical properties for the material, envisaged composite. The purpose of this study is to treat palm fiber with a basic solution of sodium hydroxide (4% w/v NaOH) for varying periods of time: 3, 7, 24 and 48 hours to improve interfacial adhesion. The results obtained from the tests carried out on the composite reinforced with palm fibers treated during 7 hours, showed a clear increase as regards the resistance to bending and compression; it is respectively of the order of 57 and 60%, compared to the composite reinforced by the untreated fibers. It can be deduced that palm fibers can be considered as one of the suitable materials for clay reinforcement. Keywords: palm fibers / clay red / flexural strength / compression / composite

Citation

Azzedine BENYAHIA , , (2019), Study of the effect of alkaline palm fiber treatment time on the mechanical behavior of red clay materials from the region of M’sila, matéraux et techniques, Vol:107, Issue:404, pages:12, www.mattech-journal.org

The purpose of this research is to compare the modifications of the mechanical properties of the reinforced unsaturated polyester with three types of reinforcement: The first is a glass powder waste, resin the second is a glass waste powder, resin and sand, finally hybride of Alfa fiber with glass waste powdered. The unsaturated polyester was reinforced with different weight ratios of reinforcements (10, 20, 30, 40 and 50 w/w %). The hybrid composites showed an increase in flexural properties with increase in the glass powder loading. The flexural properties of these hybrid composites have been found to be higher than that of the matrix. Hand lay-up technique was used for making the composites and tests are carried out by using ASTM methods. Key words : Unsaturated polyester, composite, waste, flexural strength, adhesion, Alfa fibers.

Citation

Azzedine BENYAHIA , ,(2019), Study of the mechanical properties of an unsaturated polyester composite reinforced with the waste of: glass powder, glass powder-sand and glass powder- Alfa fibers,5Th International conference on advances in mechanical engineering Istanbul 2019,ISTANBUL-TURKEY

The main advantages to use natural fibers in composite are: low cost, low weight, biodegradable, ecological, and renewable [1,2]. However, two major reasons limit applying natural fibers reinforced composite. First, the tensile strength of natural fiber is very low compared to Synthetic fibers. The second is the water absorption [3]. Although synthetic fibers such as glass fibers, have been used frequently in the past for reinforcing different types of composites [4-12], to the best of the authors’ knowledge, no previous attempt has been performed at manufacturing fibers for plastic reinforcement from the Diss plant. The Diss (Ampelodesma mauritanica) is a wild plant, very fibrous over large parts of Mediterranean countries. The objective of this study is to improve the mechanical properties of composites based on an unsaturated polyester matrix reinforced with Diss fibers (Ampelodesmos mauritanicus) from the Boussaâda region. This type of fiber is characterized by interesting physical and chemical properties; such as: rigidity, lightness, low cost, abundance and eco-environmentality. These qualities make these fibers a potential competitor to artificial fibers. However, the incompatibility between the plant fibers and the unsaturated polyester gives the composite low mechanical properties. To remedy this problem, Diss fiber was previously exposed to an alkaline treatment based on sodium hydroxide. The effectiveness of this treatment has been confirmed, in addition to certain parameters (the size of the fibers, the concentration of NaOH, the temperature and the treatment time) seems to have a notable effect on the mechanical properties . The characterization techniques used in this study are: Optical microscope, SEM, FTIR, XRD, Tensile, Flexural.

Citation

Azzedine BENYAHIA , ,(2019), Study the alkali treatment effect on the mechanical properties: unsaturated polyester/Diss fibers composite.,5Th International conference on advances in mechanical engineering Istanbul 2019,ISTANBUL-TURKEY

This work is part of the development of local materials, such as vegetable fiber (palm fiber) and red clay from southern Algeria, widely used in the preparation of bricks as rural building materials. Vegetal fibers have very interesting properties, they are: renewable, biodegradable and low cost / lightness ratio. Their mechanical properties are very important. However, the predominant problem in this type of composite material is the weak adhesion of the matrix-fiber interface, probably attributed to the nature of the surface and the hydrophobic character of the natural fibers, thus leading to weak mechanical properties for the material, envisaged composite. The purpose of this study is to treat palm fiber with a basic solution of sodium hydroxide (4% w/v NaOH) for varying periods of time: 3, 7, 24 and 48 hours to improve interfacial adhesion. The results obtained from the tests carried out on the composite reinforced with palm fibers treated during 7 hours, showed a clear increase as regards the resistance to bending and compression; it is respectively of the order of 57 and 60%, compared to the composite reinforced by the untreated fibers. It can be deduced that palm fibers can be considered as one of the suitable materials for clay reinforcement. Key words: palm fibers / clay red / flexural strength / compression / composite

Citation

Ali REDJEM , Koadri Zainate , Azzedine BENYAHIA , BRAHIM Nouibat , , (2019), Study of the effect of alkaline palm fiber treatment time on the mechanical behavior of red clay materials from the region of M’sila, Matériaux & techniques, Vol:107, Issue:4, pages:1-12, Editor-in-Chief: J.-P. Birat - Editorial board

The purpose of this research is to compare the modifications of the mechanical properties of the reinforced unsaturated polyester with three types of reinforcement: The first is a glass powder waste, the second is a sand blasted glass waste powder and finally hybride of Alfa fiber with glass waste powdered. The unsaturated polyester was reinforced with different weight ratios of reinforcements (10, 20, 30, 40 and 50 % w/w). The hybrid composites showed an increase in flexural properties with increase in the glass powder loading. The flexural properties of these hybrid composites have been found to be higher than that of the matrix. Hand lay-up technique was used for making the composites and tests are carried out by using ASTM methods. Key words: Alfa, composite, alkali treatment, adhesion

Citation

Azzedine BENYAHIA , ,(2019), Study of the mechanical properties of an unsaturated polyester composite reinforced with the mixture of glass and Alfa fibers,6èmes Journales Scientifiques Franco-Maghrébine,Annaba-Algérie

In this study, a synergistic treatments including alkali, permanganate, dichromate and bleach pretreatment on Luffa sponge fibers (LF) was used as reinforcement in a unsaturated polyester (UP) matrix to improve the mechanical properties of LF/UP composites. The effect of the treatments by: NaOH, K2Cr2O7, KMnO4, NaClO and silane on the performance of the LF/UP composites were evaluated using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), mechanical testing (examining flexural). Analysis of the composites suggested that the The results showed that composites reinforced with treated fibers had a higher bending strength than composites reinforced with untreated fibers. Key words : Luffa fiber, composite, alkali treatment, flexural strength.

Citation

Nadir DEGHFEL , Azzedine BENYAHIA , ,(2019), Study of the mechanical properties of an unsaturated polyester composite reinforced with the Luffa sponge fibres,6ème Journées Scientifiques Franco-Maghrébine. Caractérisation des matériaux complexes,Annaba-Algérie

In this study, a synergistic treatments including alkali, permanganate, dichromate and bleach pretreatment on Luffa sponge fibers (LF) was used as reinforcement in a unsaturated polyester (UP) matrix to improve the mechanical properties of LF/UP composites. The effect of the treatments by: NaOH, K2Cr2O7, KMnO4, NaClO and silane on the performance of the LF/UP composites were evaluated using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), mechanical testing (examining flexural). Analysis of the composites suggested that the The results showed that composites reinforced with treated fibers had a higher bending strength than composites reinforced with untreated fibers. Key words : Luffa fiber, composite, alkali treatment, flexural strength.

Citation

Nadir DEGHFEL , Azzedine BENYAHIA , ,(2019), Study of the mechanical properties of an unsaturated polyester composite reinforced with the Luffa sponge fibres,5Th International conference on advances in mechanical engineering Istanbul 2019,ISTANBUL-TURKEY

Study of the mechanical properties of an unsaturated polyester composite reinforced with the Luffa sponge fibers

Citation

Nadir DEGHFEL , Azzedine BENYAHIA , ,(2019), Study of the mechanical properties of an unsaturated polyester composite reinforced with the Luffa sponge fibers,6èmes Caractérisation Journées Scientifiques des Matériaux Franco-Maghrébines,Université Badji Mokhtar Annaba

This article describes a study conducted to determine the ideal both traditional and stabilized composition of adobe as a building material, and to further refine an appropriate choice of coating composition for extended durability of these constructions in adobe: choose the suitable coating that fits the most with its substrate. The constructions in Z’gueg El Hadjadj [Laghouat town, Algeria] consist of adobe walls but also plaster that serves as a coating for these brick walls. The degradation phenomena of the building are considered in the adobe-coated couple, and consequently in the suitability of their compositions. The compatibility of plasters with adobes remains a major factor in the restoration and conservation of earthen constructions. This paper examines the results of the experimental characterization of the behavior of coated bricks, which consists of studying in the laboratory the water resistance: the drying-wetting test and the capillary rise test, as well as the complementary accelerated aging test: the abrasion test. These tests will be supplemented by another test, that of the adhesion, to see the compatibility of the coatings with their supports. The results, compared below, led to the conclusion that for capillary absorption and adhesion tests, a homogeneous coating in 3 layers could give more conclusive results. The drying-wetting test is recommended especially for bulk and surface treated samples. Keywords: adobe brick / coatings / absorption / adhesion / durability

Citation

BRAHIM Nouibat , Azzedine BENYAHIA , Ali REDJEM , Nadir Kerroum, , (2018), Study of the performance of adobe brick coated for sustainable construction in the Algerian Sahara, matéraux et techniques, Vol:106, Issue:401, pages:10, EDP Sciences, 2018

This work is part of the development of local materials such as palm fibres and clay in the south of Algeria. These materials are abounding, natural, renewable and have very important mechanical properties. Our objective is to study the alkalin treatment effect of palm fibres on the mechanical characteristics of clay based materials, the proposal motivate the use of these materials in the field of rural construction. In the first step, we mix the red clay (chosen as base materials) with different weight ratios of palm fibres (0.5, 1, 2, 3 % (w/w)) to determine the optimum percentage used in the composite material. In the next step, the fibre was treated with 4 % w/w sodium hydroxide solution at different periods 3, 6, 24 and 48 hours. The results of static tests on composites showed that the improvements in flexural and tensile strengths of composites reinforced with the treated fibers, particularly the composite with treated fibers at 4 % w/w NaOH ; at 3h, these improvements were about 57% and 60%, respectively, compared to untreated fiber reinforced composite. It can be concluded that palm fibres can be considered as one of the appropriate material for clay reinforcement. Keywords: Palm fibres, clay red, tensile strength, compression, composite.

Citation

Azzedine BENYAHIA , ,(2018), Study of the mechanical behavior of a clay -based materials of M'sila region reinforced by Palm fibres,The 5Th International Colloquium Corrosion & Materil's Protection,Monastir - Tunisia

The present work aims to reduce the impact of vat dyes by a natural and activated Algerian clay using the adsorption technique. The adsorption experiments show that the clay used is very effective in removing the vat dye at relatively low concentrations in an aqueous medium. The adsorption isotherms of the vat dye on the raw clay are satisfactorily described by the Langmuir model. Adsorption capacities in the range of 55.25 mg.g
1 for crude bentonite (BB), 55.20 mg.g
1 for sodium bentonite (BS), 51.78 mg.g
1 for red clay (AR) and 48.24 mg.g
1 for Madadid clay (AM) were determined from the Langmuir isotherm. These values show that the raw bentonite has a better adsorption capacity because it contains a large percentage of clay fraction. Keywords: clay / adsorption / water / vat dye / pollutants

Citation

Nadir DEGHFEL , Azzedine BENYAHIA , BELMOKRE Kamel, ERRACHID Abdelhamid, ,(2018), Removal capacity and adsorption mechanism of a clay and bentonite for a textile dye,Quatrièmes Journées Internationales de Chimie Organique de Annaba-JICOA’18,Annaba-Algérie

The present work aims to reduce the impact of vat dyes by a natural and activated Algerian clay using the adsorption technique. The adsorption experiments show that the clay used is very effective in removing the vat dye at relatively low concentrations in an aqueous medium. The adsorption isotherms of the vat dye on the raw clay are satisfactorily described by the Langmuir model. Adsorption capacities in the range of 55.25 mg.g
1 for crude bentonite (BB), 55.20 mg.g
1 for sodium bentonite (BS), 51.78 mg.g
1 for red clay (AR) and 48.24 mg.g
1 for Madadid clay (AM) were determined from the Langmuir isotherm. These values show that the raw bentonite has a better adsorption capacity because it contains a large percentage of clay fraction.

Citation

Azzedine BENYAHIA , , (2017), Comparative study of the adsorption of a vat dye on different adsorbents based on an inorganic material Bentonite and clay from the M’sila region., matéraux et techniques, Vol:105, Issue:405, pages:10, www.mattech-journal.org

Composite materials based on woven Alfa and unsaturated polyester resins were manufactured by hand layup technique. The Alfa fibers were collected from the M’Sila region (Algeria). Different chemical treatments such as mercerization, permanganate, acetylating and dichromate have been used in order to modulate the mechanical properties of these composites. According to tensile and flexural tests, the treated composites showed better mechanical performances compared to their untreated counterparts. Actually, the permanganate treated fiber-reinforced composites showed 43.02 % of increase in tensile strength and 31.59 % in Young’s modulus, while the acetylated fiber-reinforced composites showed maximum improvement in flexural strength of about 23.80 %. Furthermore, the flexural modulus was also improved by 35.7 % compared to the untreated Alfa fiber composites. FTIR characterization of Alfa fibers showed that the quantity of hydroxyl groups (-OH) decreased and the crystallinity index increase by 20.53% after alkali treatment. SEM observations on fibers surface showed that the different chemical treatments modified the fiber which improved the fiber–matrix adhesion. Keywords: . Alfa fibers, composites, chemical treatment, tensile test, mechanical properties.

Citation

Azzedine BENYAHIA , Ali REDJEM , ZINE EL ABIDINE Rahmouni , ABDELLAH Merrouche , , (2016), Study of the mechanical properties of a composite material: alfa fibers / unsaturated polyester, Romanian Journal of Materials, Vol:46, Issue:1, pages:25-33, University POLITEHNICA Bucharest - Romania

ELABORATION AND CHARACTERIZATION OF A COMPOSITE MATERIAL REINFORCED BY PLANT FIBERS

Citation

Azzedine BENYAHIA , ,(0024-05-06), ELABORATION AND CHARACTERIZATION OF A COMPOSITE MATERIAL REINFORCED BY PLANT FIBERS,2ème Colloque de chimie CNC2@2024,Université Mohamed Boudiaf M'sila